How To Use Sulphide In A Sentence
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Because the alkali waste mainly contains sodium sulphide, sodium carbonate and some organic matters, which restrict the comprehensive utilization of alkali waste.
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Crookes, a toy called the spinthariscope, on which radium particles impinge upon sulphide of zinc and make it luminous, induced him to associate the two sets of phenomena.
The World Set Free
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Nearly the only cadmium mineral known is the sulphide, greenockite, but no deposits of this mineral have been found of sufficient volume to be called cadmium ores.
The Economic Aspect of Geology
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Iron likewise combines with a considerable variety of substances other than oxygen; and some of these compounds, as for instance iron carbonate (siderite), iron silicate (chamosite, glauconite, etc.), and iron sulphide (pyrite), are locally mined as iron ores.
The Economic Aspect of Geology
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Closely allied to this subject is the investigation of the mode in which certain metals are reduced from their solutions by metallic sulphides, or, in common language, the influence which the presence of such substances as mundic and galena may exercise in effecting the deposit of pure metals, such as gold, in mineral lodes.
Getting Gold: a practical treatise for prospectors, miners and students
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Neither does Mr. Rosales's theory account at all for auriferous lodes; which below water level are composed of a solid mass of sulphide of iron with traces of other sulphides, gold, calcspar, and a comparatively small percentage of silica.
Getting Gold: a practical treatise for prospectors, miners and students
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The massive sulphides are always contained within the Volcano - Sedimentary Complex.
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Synthetic steroids, phenylbutazone, lead or mercuric sulphide can be added.
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In addition to producing antimony sulphide concentrate, gold and silver are produced as by-products.
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Garlic and onions are medicinal for their allyl sulphides antioxidant and detoxifying activity.
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The transparent bisulphide, which is highly pervious to invisible heat, exercises on it the same absorption as the perfectly opaque solution.
Fragments of science, V. 1-2
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By anaerobic bacterial action, sulphates are reduced to sulphides and organic material is broken down, ultimately to yield carbon dioxide and methane.
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The Podolia ash beds consist largely of clay minerals accompanied by a variety of primary volcanogenic crystals and secondary sulphides, sulphates, oxides, carbonates, and silicates.
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A solution of iodine in carbon bisulphide, on the other hand, completely blocks light, but is quite transparent to heat.
First Men in the Moon
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For the cathode, the platinum can be replaced by cobalt sulphide, which is far less expensive.
The Earth Times Online Newspaper
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Much of the research into the pharmacological benefits of garlic has focused on the organic polysulphides that the clove is rich in — the best known of which is Allicin.
Scientists Unravel Garlic’s Secrets | Impact Lab
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The distinguishing features of Mr. Mullings 'process are, method by which loss of carbon disulphide is avoided, and the extraction of that solvent by means of cold water.
Scientific American Supplement, No. 447, July 26, 1884
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The mineral water of the numerous fountains, natural springs and wells, have an almost uniform chemical composition, temperature and sulphide content.
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The drilling in sulphide mounds at the ocean bottom and their comparison with VMS (volcanogenic massive sulfide) indicate that they have similar internal structures and mineral zonation.
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Garlic oil may protect your heart against damage, compound called allicin linked to cardiovascular health Diallyl trisulphide (DATS) may help 'release protective compounds to the heart' Monday, November 21 2011, 10:11 AM A potent-smelling component of garlic oil called diallyl trisulphide (DATS) may help release protective compounds to the heart.
NYDN Rss
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The greenstone-hosted deposits formed in shallow water in association with basic and more silicic rocks; they have an underlying hydrothermally altered zone and contain abundant copper, zinc, and lead sulphides.
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Although an amino acid acceptor of sulphide is necessary for sulphate assimilation, only little attention was paid to the regulation of S assimilation by carbon metabolites.
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The 20 vein is comprised of an assemblage of semi-massive irregular clusters of sulphide chalcopyrite, pyrrhotite, pyrite, and minor tetrahedrite.
Marketwire - Breaking News Releases
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Absorption of drugs often causes blindness -- tobacco, wood alcohol, lead, used in so many industries; bisulphide of carbon, used in making rubber; nitro-benzol, used in the manufacture of explosives, and some of the anilin dyes.
Five Lectures on Blindness
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During 1957, an orange flocculent precipitate containing metal sulphides appeared in the spring pool and became incorporated in the marginal sinter.
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Flasks and bottles full of nitrates and sulphides and chlorates and acetone, labelled in English and Arabic, lay on dirty tables.
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Graham Jones and his team at Southern Cross University in Lismore, New South Wales, Australia, demonstrated that algae living in coral tissue produce a gas called dimethyl sulphide
New Scientist - Online News
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Some of the oldest focus not on gold but on cinnabar, the red mineral mercury sulphide.
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The high temperature treatment effaces the strains, coalesces the sulphide films in the ferrite which embrittle the steel and produces homogenity by rapid diffusion.
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Common sources of SO2 have risen in the last decades, from sources such as combustion of dirty pyritic coal and smelting of sulphide mine ores.
Q.e.d. « Climate Audit
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Vermilion paint, made from mercuric sulphide, was then splashed onto the image's wrists, feet and body to represent blood.
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Previously, only the electricity sector and non-ferrous smelting industry were subject to the limits on nitrogen oxide and sulphide dioxide, two of the most notorious and significant contributors to smog.
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Here, too, the veins may be monomineralic, commonly quartz or calcite, but more usually are polymineralic with a mixture of metalliferous sulphide or oxide minerals and gangue minerals.
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Selenium can be precipitated with sulphuretted hydrogen as a sulphide, which is readily soluble in ammonium sulphide.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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The preliminary, widely spaced five hole drill program encountered anomalous gold, arsenic and base-metals in intervals tens-of-metres thick with silicification, pyritic sulphides, within variable skarn and hornfels alteration.
The Earth Times Online Newspaper
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The smell is distinctive, too: chemicals and rotten eggs, the hydrogen sulphides produced by processing coal.
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The rocks consist of a clay-slate, with crystals resembling chiastolite and crystals of sulphide of iron interspersed.
The Voyage of the Vega round Asia and Europe, Volume I and Volume II
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There are the pains in the stomach, the colic, and then on the gums is that characteristic line of plumbic sulphide, the distinctive mark produced by lead.
The War Terror
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Pass hydrogen sulphide through the filtered or dialyzed fluid until a precipitate ceases to fall; collect the sulphide thus formed, wash and dry it.
Aids to Forensic Medicine and Toxicology
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When a sour gas well is ignited, hydrogen sulphide is transformed into sulphur dioxide, which is less immediately dangerous, but still toxic.
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According to the characteristics of copper sulphide ore, the mineral processing flow-sheet and new reagent system were investigated and adjusted.
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The sulphur in the gas comes from aluminium sulphide in the carbide, which is produced in the electric furnace by the interaction of impurities containing aluminium and sulphur (clay-like bodies, &c.) present in the lime and coke; this aluminium sulphide is attacked by water and yields sulphuretted hydrogen.
Acetylene, the Principles of Its Generation and Use
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Garlic oil may protect your heart against damage, compound called allicin linked to cardiovascular health Diallyl trisulphide (DATS) may help 'release protective compounds to the heart' Monday, November 21 2011, 10:11 AM A potent-smelling component of garlic oil called diallyl trisulphide (DATS) may help release protective compounds to the heart.
NYDN Rss
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A selection of carbonate and sulphide samples were analysed to determine their composition, and also to correlate any changes in composition with colour zonation identified in transmitted light or under cathodoluminescence.
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As the mercury chloride is reconverted into hydrochloric acid by the hydrogen sulphide, and as the hydroxylamine does not neutralise to litmus the hydrochloric acid combined with it, there is an equal amount of hydrochloric acid free or available in the two solutions.
Nitro-Explosives: A Practical Treatise
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The ever-present bacteria in the stomach are thus permitted to attack the protein and putrefaction commences, rendering nutrients in the protein food largely useless to you and producing toxic wastes and foul gases, including such poisons as indol, skatol, phenol, hydrogen sulphide, phenylpropionic acid, and others.
The Tao of Health, Sex and Longevity
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The Rossland, the Boundary and the Kootenay districts are the chief centres of vein-mining, yielding auriferous and cupriferous sulphide ores, as well as large quantities of silver-bearing lead ores.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"
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* For the cathode, the platinum can be replaced by cobalt sulphide, which is far less expensive.
Next Big Future
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Sulphur bacteria may be present below the anoxic zone, reducing sulphate ions and liberating hydrogen sulphide.
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While nodules are loose deposits, lying on the sea bed, sulphides are massive deposits below the ocean floor.
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A regulus is a sulphide of copper and iron, carrying from
A Text-book of Assaying: For the Use of Those Connected with Mines.
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Where the Zeederbergs-Cheshire contact lacks ironstone horizons, the contact is variably sheared, and adjacent rocks are silicified and characterized by mostly oxidized sulphide impregnation.
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However, the researchers found that the communities of microbes thrived on hydrogen sulphide, which is toxic to most lifeforms, and is the product of the breakdown of organic material in an environment where there is no oxygen.
BBC News | News Front Page | World Edition
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The ironstones are not sedimentary banded iron formation but formed as a consequence of silicification and sulphide mineralization along shear zones.
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The orange-red sulphides of arsenic, orpiment and realgar, are formed both as primary minerals of igneous source and as secondary products of weathering.
The Economic Aspect of Geology
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The zinc sulphide is then transferred to a vessel through which passes an inert gas, such as nitrogen or carbon dioxide.
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Among the items quickly snapped up was an exquisite orange and yellow glass piece made to imitate realgar, a poisonous mineral that is almost pure sulphide of arsenic, beautiful to the eye but poisonous to the touch (price: around €2,000).
In Maastricht, No Sign of Crisis
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(pp. 235) also yield important amounts, the arsenic-bearing minerals being enargite and tennantite (copper-arsenic sulphides) and others.
The Economic Aspect of Geology
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These deposits represent enrichments of ore minerals caused by surface waters that percolate downwards through an existing sulphide-rich orebody.
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Chinese antimony is exported in part as antimony crude (lumps of needle-like antimony sulphide), and in part as antimony regulus, which is about 99 per cent pure metal.
The Economic Aspect of Geology
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(As_ S_ ), as oxide (As_ O_ ), and as a constituent of many metallic sulphides, such as arsenopyrite (FeAsS).
An Elementary Study of Chemistry
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During primary sulphate assimilation in chloroplasts, sulphate is reduced via sulphite to the organic sulphide which is used for cysteine biosynthesis.
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Cadmium sulphide, CdS, occurs naturally as greenockite (_q. v._), and can be artificially prepared by passing sulphuretted hydrogen through acid solutions of soluble cadmium salts, when it is precipitated as a pale yellow amorphous solid.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
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Solid lubricants such as soap, molybdenum disulphide or graphite are preferred to mineral oils and greases.
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ruby silver," stephanite or "black silver," and polybasite; the silver-arsenic sulphides, proustite or "light ruby silver" and pearcite; and the silver antimonide, dyscrasite.
The Economic Aspect of Geology
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And it is not inconceivable that the still more unstable emanation from the matter named actinium by Debierne and emanium by Giesel may be found to possess an even higher atomic weight than uranium; judging by the phenomenon of brilliant illumination when a preparation of emanium is held above a screen of zinc sulphide, the impression is formed that a very dense matter is falling down on the screen.
Sir William Ramsay - Nobel Lecture
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But the heavy, true alluvial gold, in great pure masses, mammillary, or botryoidal (like a bunch of grapes) in shape, have assuredly been formed by accretion on some metallic base, from gold salts in solution, probably chloride, but possibly sulphide.
Getting Gold: a practical treatise for prospectors, miners and students
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These are situated in the basal portions of a great norite intrusive, and are ascribed to segregation of the sulphides as the rock solidified.
The Economic Aspect of Geology
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Heating or pasteurization destroys the delicate disulphide bonds that give these proteins their bioactivity.
Food Sources That Boost Glutathione Naturally
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An additional sulphide-facies type was described as consisting of pyritic carbonaceous shale.
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Arsenic sulphides, arsenopyrite: hot sublimate is dark, cold varies from yellow to red.
1.1 Blow pipe assaying
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For example, layered intrusions are subdivided into stratiform and contact deposits, with the stratiform deposits further subdivided into chromite and sulphide-associated deposits.
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Well, the gases released when one is flatulent are essentially, carbon dioxide, nitrogen and hydrogen sulphide.
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The smell is distinctive, too: chemicals and rotten eggs, the hydrogen sulphides produced by processing coal.
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It was found to be insoluble in all ordinary menstrua, such as alcohol, ether, carbon disulphide, benzene, or chloroform, and neither attacked by boiling alcoholic potash nor by fusing alkali.
Scientific American Supplement, No. 401, September 8, 1883
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Sulphide mineralization in these deposits tends to be disseminated throughout the body and is dominated by pyrrhotite and pentlandite phases.
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The best conductor among the natural sulphides appeared to be mispickel, which vies in this respect with some of the metals.
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A sample which I analyzed lost in drying 36.2 per cent., the loss consisting of water and carbon disulphide.
Scientific American Supplement, No. 447, July 26, 1884
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Cadmium occurs in nature as cadmium sulphide in greenockite, CdS, which is very rare.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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Gold mineralisation is associated with earlier fluids; antimony and base metal sulphides with later fluids.
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~ Arsenic occurs in considerable quantities in nature as the native element, as the sulphides realgar (As_ S_ ) and orpiment
An Elementary Study of Chemistry
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DOCs include all compounds of carbon except for its oxides, sulphides and metal carbonates if they are identifiable by chemical name.
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Ethyl acetate, hydrogen sulphide, mercaptans, excess sulphur dioxide, and the smellable compounds generated by some bacteria all can be reasons for judging a wine faulty.
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It is easily soluble in alcohol, ether, benzol, chloroform, sulphide of carbon, and vinegar; to
Scientific American Supplement, No. 447, July 26, 1884
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The outlet can contain nitrite or hydrogen sulphide.
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As a especially effective collector for processing copper sulphide ore, methyl sulphonamide features good selectiveness and strong collection.Sentencedict
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The catalysis - acid leaching process of copper bismuth sulphide dregs is introduced.
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Ore minerals are found in several of the main chemical classes into which minerals can be classified, including native elements, sulphides, oxides, silicates, arsenides, phosphates, and carbonates.
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Pore waters also sensitively record the occurrence of other reactions, such as the dissolution, precipitation, and recrystallization of phosphates, carbonates, and sulphides, during early diagenesis.
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ruby silver," stephanite or "black silver," and polybasite; the silver-arsenic sulphides, proustite or "light ruby silver" and pearcite; and the silver antimonide, dyscrasite.
The Economic Aspect of Geology
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Mineralization comprises sphalerite, galena and tetrahedrite in sulphide-rich veins ranging from a few centimeters to greater than one meter thick and heavily disseminated sphalerite, galena and tetrahedrite between the veins.
Marketwire - Breaking News Releases
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Sulphide infilled vesicles form numerous zones of disseminated magmatic sulphides within B-zones of thick komatiite lavas.
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Besides the colouring principle of the lazulite, there are always more or less mica and iron pyrites, the latter a lustrous yellow bisulphide of iron, which has often been mistaken for pellets of gold.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists
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A compound in the bulb — called diallyl trisulphide — has the power to prevent the destruction of heart tissue.
The Sun
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Either sulphide of antimony yields antimonious chloride on boiling with hydrochloric acid, sulphuretted hydrogen being given off; and, in the case of antimonic sulphide, sulphur is deposited.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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These specialised organisms form an integral part of the adult colonic microbiota and may be involved in inflammatory bowel disease due to the effects of sulphide toxicity in the gut.
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Flasks and bottles full of nitrates and sulphides and chlorates and acetone, labelled in English and Arabic, lay on dirty tables.
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The latter mineral, a sulphide of iron, has a shiny metallic lustre and was often mistaken for gold itself: it is the infamous fool's gold.
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The gas component may be ethane, propane, butane, carbon dioxide, or hydrogen sulphide, but is most commonly methane.
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However, only a small fraction (roughly 3 per cent on average) of the crustal abundance of most minerals exists in non-silicate form, as oxides, sulphides, or carbonates.
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Now a potent-smelling component of garlic oil called diallyl trisulphide DATS may help "release protective compounds to the heart," stated the researchers, who presented their findings on Wednesday at the American Heart Association's Scientific Sessions in Orlando, Florida.
NYDN Rss
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It said the time taken for the sludge to travel the 6km from Southend to Stambridge caused a build-up of hydrogen sulphide and has corroded the equipment in the dewatering plant, as well as presented a health risk to workers there.
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Similar to the deleterious metals, element contents which would be worth recovering and marketing in the form of by-products are also often overlooked; for example, zircon sand from alluvial deposits, gold-containing pyrite and arsenopyrite from complex sulphide veins.
Chapter 6
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Sulphide of antimony is also a constituent of fahlerz and of many silver ores.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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Toughened glass is very strong, but has been known to fracture spontaneously due to nickel sulphide inclusions.
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For this purpose it is employed both in the ground form and in the manufacture of lithopone, a widely used white paint consisting of barium sulphate and zinc sulphide.
The Economic Aspect of Geology
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These figures become even more significant when it is realised that these dumps have surprisingly low recovery rates because the microbiological component of sulphide leaching was not realised at the time of the dumps construction.
Chapter 6
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Hydrogen sulphide was probably a relatively rare commodity, even in ancient times.
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Most metallic sulphides are amorphous and disseminated throughout the sinter, instead of forming distinct mineral phases.
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Sulphide minerals in the gold ridges dissolve and creates mineral-rich acidulated water.
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Garlic has long been linked to cardiovascular health, thanks to a compound called allicin, which reacts with red blood cells and produces hydrogen sulphide that relaxes the blood vessels and keeps blood flowing easily.
NYDN Rss
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More recent studies suggest an epigenetic origin, indicating that sulphide-rich iron formation is a replacement type rather than a primary sedimentary facies.
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Plankton release a chemical called dimethyl sulphide into the atmosphere which helps cloud droplets form.
New Scientist - Online News
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Under weathering conditions pyrite oxidizes, the sulphur forming sulphuric acid, -- an important agent in the secondary enrichment of copper and other sulphides, -- and the iron forming the minerals hematite and limonite in the shape of a "gossan" or "iron-cap.
The Economic Aspect of Geology
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The primary copper mineral in the limestone is chalcocite, in exceptionally rich and solid masses, showing no evidence of having replaced earlier sulphides.
The Economic Aspect of Geology
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A new route of using the mirabilite resources to produce alkali sulphide, and then derive o-phenylenediamine was introduced.
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Flourishing under oxygen-deficient conditions, the bacteria feed off toxic hydrogen sulphide, which is produced when organic matter degrades without oxygen.
TreeHugger
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Black smokers, debouching fluids at 350°C into the overlying sea water sit atop a mound of hydrothermal minerals, including sulphides, sulphates, oxides, and silicates.
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Thus the sulphocarbonate of a 'hydrocellulose' is formed with lower proportions of alkaline hydrate and carbon disulphide, gives solutions of relatively low viscosity, and, when decomposed to give a film or thread of the regenerated cellulose, these are found to be deficient in strength and elasticity.
Researches on Cellulose 1895-1900
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Sulphide ores tend to oxidise in aerobic conditions, consuming oxygen and releasing carbon dioxide.
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Either sulphide of antimony yields antimonious chloride on boiling with hydrochloric acid, sulphuretted hydrogen being given off; and, in the case of antimonic sulphide, sulphur is deposited.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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The sediment, rich in heavy metal elements and organic substances, takes in dissolved oxygen and discharges smelly waste such as methane and sulphide into the water.
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Some ore deposit types, such as volcanogenic massive sulphide deposits, can contain both syngenetic and epigenetic mineralization.
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~ Lead is found in nature chiefly as the sulphide (PbS), called galena; to a much smaller extent it occurs as carbonate, sulphate, chromate, and in a few other forms.
An Elementary Study of Chemistry
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In safety matches _red_ phosphorus, an oxidizing agent, and some gritty material such as emery is placed on the side of the box, while the match tip is provided as before with an oxidizing agent and an easily oxidized substance, usually antimony sulphide.
An Elementary Study of Chemistry
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Quartzite, with traces of galena and molybdic sulphide. 3 and 4.
Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.
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Titanium also interacts with sulphur and can have a beneficial effect on the shape of sulphide inclusions.
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Sedimentation characterized by radiolarian-bearing red mudrocks is typical of the interval between the sulphide layer and the flysch of the Culm.
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In this paper, we show that the opaline silica and amorphous sulphides are precipitating mainly on filamentous microbes and biofilms, which form templates for both the metal-rich sinter and the suspended flocs.
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A portion of the black specimen being dissolved in carbon disulphide there remained undissolved merely a trace of a very pale yellow matter which seemed to be amorphous phosphorus.
Scientific American Supplement, No. 360, November 25, 1882
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(pp. 235) also yield important amounts, the arsenic-bearing minerals being enargite and tennantite (copper-arsenic sulphides) and others.
The Economic Aspect of Geology
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In the new stage, the ore will first be leached, and then, the residue will be treated by flotation to recover the sulphide content.
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All of these came from natural sources such as madder, kermes, red and white lead, verdigris, yellow ochre, yellow arsenic sulphide, oak gall, indigo and woad and lapis lazuli.
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Other organic bodies containing sulphur are decomposed in the same fashion, and it has been suggested by Ditz that if carbide could be obtained at a suitable price, the process might be made useful in removing sulphur (_i. e._, carbon bisulphide and thiophen) from crude benzol, in purifying the natural petroleum oil which contains sulphur, and possibly in removing "sulphur compounds" from coal-gas.
Acetylene, the Principles of Its Generation and Use
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The four usual agents of deterioration in the air apart from oxygen and water are sulphur dioxide, hydrogen sulphide, ozone and nitrogen dioxide.
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The drop in pH is probably mainly due to oxidation of upward diffusing sulphide.
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It turned out that the hydrogen sulphide rising from the sea floor vents produced a process called chemosynthesis; the basis of the food chain.
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The print is then toned in sulphide or selenium and often hand coloured with oil paints to create the final result.
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Also, the inevitable non-metallic inclusions, i.e. oxides, silicates, sulphides, are broken up, some deformed, and distributed throughout the steel in a more uniform manner.
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In this paper, we show that the opaline silica and amorphous sulphides are precipitating mainly on filamentous microbes and biofilms, which form templates for both the metal-rich sinter and the suspended flocs.
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With regard to auriferous pyritic lodes, it does not appear even now to be clear, as some scientists assert, that their gold is never found in chemical combination with the sulphides of the base metals.
Getting Gold: a practical treatise for prospectors, miners and students
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A platinum arsenide, called sperrylite, is sometimes found associated with sulphide minerals in basic igneous rocks.
The Economic Aspect of Geology
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Certain beard worms, such as Riftia pachyptila, live at ocean floor thermal vents and have no digestive tract; instead they supply hydrogen sulphide and methane to bacteria in their trophosomes, which oxidise the hydrogen sulphide and methane on behalf of the worm.
Natural Kinds
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It may also occur as the amorphous non-poisonous variety, a red opaque infusible substance, insoluble in carbon disulphide.
Aids to Forensic Medicine and Toxicology
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The gold is associated with sulphides, sericitic alteration and minor quartz veinlets although the open-pittable resource is largely oxidised.
Reuters: Press Release
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The Podolia ash beds consist largely of clay minerals accompanied by a variety of primary volcanogenic crystals and secondary sulphides, sulphates, oxides, carbonates, and silicates.
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It was understood that the 23 year-old, who lives with his father, had inhaled hydrogen sulphide, which is considered by scientists to be as toxic as hydrogen cyanide.
Telegraph.co.uk - Telegraph online, Daily Telegraph, Sunday Telegraph
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Carbon disulphide has also been patented, but, as will afterward be shown, the old method of removing it from the wool injured the color and quality of the fiber, so as to make the application of this scouring agent a failure.
Scientific American Supplement, No. 447, July 26, 1884
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The flask and its contents are heated on the water bath at 100° C. with constant attention, until the last traces of the carbon bisulphide have distilled away.
Nitro-Explosives: A Practical Treatise
-
The Podolia ash beds consist largely of clay minerals accompanied by a variety of primary volcanogenic crystals and secondary sulphides, sulphates, oxides, carbonates, and silicates.
-
These zones are separated from contact massive sulphides by barren komatiite.
-
The "sulphur compounds" of coal-gas, however, consist mainly of carbon bisulphide, which is certainly not the chief "sulphur compound" in acetylene, even if present to any appreciable extent.]
Acetylene, the Principles of Its Generation and Use
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It has been assumed that the formation of these sinters and their associated metalliferous sulphides is due to abiotic processes.
-
Iron likewise combines with a considerable variety of substances other than oxygen; and some of these compounds, as for instance iron carbonate (siderite), iron silicate (chamosite, glauconite, etc.), and iron sulphide (pyrite), are locally mined as iron ores.
The Economic Aspect of Geology
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Five years ago, Graham Jones and his team at Southern Cross University in Lismore, New South Wales, Australia, demonstrated that algae living in coral tissue produce a gas called dimethyl sulphide (DMS).
Zee News : India National
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Jarosite is a major secondary mineral formed in acid supergene environment by oxidation of metal sulphide.
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The iron-rich skarn rocks, as well as other skarn types including epidote-silica skarns and sulphide-rich skarns, and hornfels rocks have been mapped as covering an area approximately 2,000 metres east-west by >
ACN Newswire
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These bacteria use molecular hydrogen as well as other electron donors, for the dissimilatory reduction of sulphate to sulphide.
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These pollutants include ozone, sulphides, nitrogen oxides, carbon monoxide, hydrocarbons, and sulphur oxides.
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This risked individuals working on the platform being exposed to the toxic gas, hydrogen sulphide and excessive quantities of sour gas being allowed into the atmosphere.
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Also, the inevitable non-metallic inclusions, i.e. oxides, silicates, sulphides, are broken up, some deformed, and distributed throughout the steel in a more uniform manner.
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However, only a small fraction (roughly 3 per cent on average) of the crustal abundance of most minerals exists in non-silicate form, as oxides, sulphides, or carbonates.
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This legal and political advantage is balanced by the higher order of technical complexity involved in exploiting sulphide ores.
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Black smokers, debouching fluids at 350°C into the overlying sea water sit atop a mound of hydrothermal minerals, including sulphides, sulphates, oxides, and silicates.
-
These pollutants include ozone, sulphides, nitrogen oxides, carbon monoxide, hydrocarbons, and sulphur oxides.
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Orpiment and realgar are yellow and orange mineral species of arsenic sulphide, used in 16th-century Venetian painting particularly, but at various other times also.
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In deposits that have been uplifted and exposed on land, the upper sulphides and oxides are invariably oxidized and weathered to a variety of secondary minerals (‘gossan’) by circulating meteoric water.
-
This legal and political advantage is balanced by the higher order of technical complexity involved in exploiting sulphide ores.
-
Sphalerite almost always contains a little cadmium, probably as the sulphide; and in zinc deposits crystals of sphalerite in cavities are frequently covered with a greenish-yellow film or coating of greenockite.
The Economic Aspect of Geology
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Hydrogen sulphide was probably a relatively rare commodity, even in ancient times.
-
This is rapidly effected as follows: -- Twelve grms. of iodine are gradually added to a solution of 2 grms. of phosphorus in about 15 or 20 c.c. of bisulphide of carbon, this solution being contained in a flask of 250 c.c. capacity.
Nitro-Explosives: A Practical Treatise
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While nodules are loose deposits, lying on the sea bed, sulphides are massive deposits below the ocean floor.
-
Zinc occurs in nature most commonly as sulphide (blende); it also occurs as carbonate (calamine) and silicate (smithsonite).
A Text-book of Assaying: For the Use of Those Connected with Mines.
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Minimal fractionation accompanies the precipitation of pyrite from dissolved sulphide.
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This takes place particularly in the parent plate under butt welds, the cracks following the line of the sulphide inclusion stringers.
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Fluids, immiscible droplets of metal sulphides, and elements like boron and fluorine are concentrated in the remaining melt.
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A typical emission might be laced with anywhere between 0.001 and 1 part per million (ppm) of hydrogen sulphide.
Times, Sunday Times
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It has been shown above that sulphur disproportionation was probably active in the basin, allowing for a higher fractionation between sulphates and sulphides.
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This karsting provides highly permeable rocks in which the sulphide minerals sphalerite and galena represent the valuable mineralization.
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Adding silage effluent to slurry greatly increases the level of poisonous hydrogen sulphide gas produced.
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DOCs include all compounds of carbon except for its oxides, sulphides and metal carbonates if they are identifiable by chemical name.
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It has been found difficult to explain the presence of the alunite except through the agency of surface oxidizing waters acting on hydrogen sulphide coming from below.
The Economic Aspect of Geology
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The sulphur of the galena falls to the bottom of the bath, and may be separated from the gangue by solution in carbon disulphide.
Scientific American Supplement, No. 433, April 19, 1884
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Put the meconate of lead with water into a beaker and pass hydrogen sulphide; sulphide of lead is formed, and meconic acid set free.
Aids to Forensic Medicine and Toxicology
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In special cases other methods of linkage may well occur, e.g. the disulphide linkage discovered by E. Baumann in which the connection of two carbon chains is made by two interlinked sulphur atoms.
Albrecht Kossel - Nobel Lecture
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The primary deposition was of chalcopyrite and other copper sulphides, together with garnet, diopside, and other minerals known to have required high temperature in their formation.
The Economic Aspect of Geology
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Some of the lodes of the region of Val di Castello consist largely of ferrous sulphide, whereas those of the Argentiera consists mainly of argentiferous lead sulphide, zinc, antimony and other metals.
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Put the meconate of lead with water into a beaker and pass hydrogen sulphide; sulphide of lead is formed, and meconic acid set free.
Aids to Forensic Medicine and Toxicology
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Many compounds are insoluble in acetic acid, which are soluble in mineral acids, such as ferric phosphate, ferric arsenate, zinc sulphide, calcium oxalate, &c., so that the use of acetic acid is valuable in some separations.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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The gas component may be ethane, propane, butane, carbon dioxide, or hydrogen sulphide, but is most commonly methane.
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A major concern confronting land management agencies in the US is the generation of metal-rich, acid drainage from abandoned metalliferous mine workings and from naturally occurring sulphide-bearing geological units.
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The importance of the Iberian Pyrite Belt as a world-class massive sulphide province extends this work to other metallogenic provinces where massive sulphide deposits occur associated with reduced sedimentary rocks.
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A syngenetic origin of sulphides was suggested by early workers, mainly based on the stratiform and stratabound occurrence of the sulphides in ironstone.
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(particularly pentlandite, but also millerite, niccolite, and others), which are found at Sudbury intergrown with the iron and copper sulphides, pyrrhotite and chalcopyrite; and the hydrated nickel-magnesium silicates (garnierite and genthite), which are products of weathering.
The Economic Aspect of Geology
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Cerussite (lead carbonate) and anglesite (lead sulphate) are mined in some places in the upper part of sulphide deposits, and supply a small fraction of the world's output.
The Economic Aspect of Geology
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Barium chloride, BaCl_2 · 2H_2O, can be obtained by dissolving witherite in dilute hydrochloric acid, and also from heavy spar by ignition in a reverberatory furnace with a mixture of coal, limestone and calcium chloride, the barium chloride being extracted from the fused mass by water, leaving a residue of insoluble calcium sulphide.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon"
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Atmosphere in the suit reads high levels of hydrogen sulphide; the port for the waldo is dead.
365 tomorrows » submission : A New Free Flash Fiction SciFi Story Every Day
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In the case of the "pure-for-analysis" sulphide, which is the recrystallized variety, the salt will be pure white and will form a quite colorless and clear solution in water.
Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements
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When in contact with thoria, and without any apparent modification in this latter substance, the vapours of the alcohols react directly with hydrogen sulphide to give thiols, with ammonia to give primary amines, with primary amines to give secondary amines, with phenols to give mixed oxides and with fatty acids to give esters of these acids; these reactions may find important industrial applications.
Paul Sabatier - Nobel Lecture
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The ever-present bacteria in the stomach are thus permitted to attack the protein and putrefaction commences, rendering nutrients in the protein food largely useless to you and producing toxic wastes and foul gases, including such poisons as indol, skatol, phenol, hydrogen sulphide, phenylpropionic acid, and others.
The Tao of Health, Sex and Longevity
