How To Use Aragonite In A Sentence
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A preliminary review of the local mineralogy was subsequently written by Endlich, who noted the presence of aragonite, chabazite, calcite, mesolite, and natrolite, in addition to ‘leucite.’
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The fibrous layer, which is made of aragonite and organic material, is elastic only under compressional stress.
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I think aragonite, olivine and ice have hexagonal crystals whereas diamond has octahedral.
Universe Puzzle No. 3 | Universe Today
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Besides these, its specific gravity is 2.8, hardness, 8.5; from calcspar it cannot be distinguished except by chemical analysis, as the two species blend almost completely with every intermediate stage of composition into either calc spar, or, what occurs in this locality, aragonite, similar in composition to it, or dolomite.
Scientific American Supplement, No. 363, December 16, 1882
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Also, diamond has no oxygen atoms; ice (H2O) has one oxygen atom; aragonite (CaCO3) has three oxygen atoms; olivine ((Mg, Fe)2SiO4) has four oxygen atoms.
Universe Puzzle No. 3 | Universe Today
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For example: aragonite, diamond, ice, olivine … found on Earth only, found on Earth and in meteorites only, found/detected in the solar system only, only one detected beyond the solar system.
Universe Puzzle No. 3 | Universe Today
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Otoliths consist of calcium carbonate, mainly in the form of aragonite, and organic matter called otoline.
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I'd order them in order of appearance: diamond (primordial), olivine (one of the earliest condensates), ice (a late condensate), aragonite (post-planet formation).
Universe Puzzle No. 3 | Universe Today
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The observation also showed that the each aragonite sheet consists of lesser aragonite sheet fibers.
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In the normal shell this is all that takes place, but in the case of a mollusc whose interior is invaded by any small source of irritation, such as a borer, or a grain of sand, or other bit of foreign material, a process of alternate deposit of conchiolin and of aragonite goes on upon the invading matter, thus forming a pearl.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
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An alternative mechanism involves lithification by magnesium calcite, aragonite, or dolomite brought about by the subsurface mixing of sea water with fresh waters draining from the land.
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In the first place, it should be understood that both conchiolin and aragonite are translucent, that is, they pass light to a certain extent.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
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Over time, the oyster wraps the grain in successive layers of aragonite, giving birth to a rare pearl.
Ariston Anderson: A Journey Through the World of Tahitian Pearls
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They should probably be ordered according to hardness: diamond, olivine, aragonite, ice.
Universe Puzzle No. 3 | Universe Today
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Microscopic crystals of aragonite located in the inner ears of zebrafish control balance and hearing.
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I think aragonite, olivine and ice have hexagonal crystals whereas diamond has octahedral.
Universe Puzzle No. 3 | Universe Today
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Changes will be much more pronounced in areas such as the Southern Ocean, which will become undersaturated with respect to aragonite in 2050.
Ocean acidification
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Coral's hard parts are composed of aragonite, a form of calcium carbonate.
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Aragonite saturation in the Gulf of Alaska, of which Resurrection Bay is a part, has traditionally extended down to 250 meters, Mathis says.
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That coating has been tentatively identified as aragonite.
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Thus calcspar is in the 2nd, or hexagonal, whilst aragonite is in the 4th, the rhombic, system, yet both are the same substance, viz.: -- carbonate of lime.
The Chemistry, Properties and Tests of Precious Stones
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Interestingly, not all "pearls" are made of nacre, that combination of aragonite (calcium carbonate and conchiolin that is secreted from a mollusk and layered together to form what gemologists call a "nacreous" pearl.
Gizmag Emerging Technology Magazine
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Therefore, the best order to arrange those four items are: diamond, ice, aragonite, olivine.
Universe Puzzle No. 3 | Universe Today
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The aragonite needles ranged from 1 to 4 m in length and were bundled in apparently random arrangements in a 10-m-thick zone between the outer walls of the capitular, medular, and cortical filaments.
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A: aragonite several answers, e.g. it's the only one found only on Earth, so far; it's the only one known to be made by biological processes
Universe Puzzle No. 5 | Universe Today
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They wandered through the Big Room, mesmerized by the translucent, calcite soda straws in the Doll's Theater, transfixed by threads of aragonite — sharp as needles — that spun around The Temple of the Sun.
The Devil's Inkwell
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Vein minerals are aragonite, barite, calcite, dolomite, quartz, sphalerite, and whewellite.
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Changes will be much more pronounced in areas such as the Southern Ocean, which will become undersaturated with respect to aragonite in 2050.
Ocean acidification
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Another example of microstructural control is that aragonite with complex microstructures can dissolve more rapidly than thermodynamically less stable magnesian calcite.
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The data plots in Feely et al. 2004 show demonstrate the shoaling of the aragonite saturation horizons in the North Pacific and Indian Oceans, and also a reduction in the size of an undersaturated midwater zone in the southern Atlantic.
HAnsen and Schmidt: Predicting the Past – Continued « Climate Audit
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Thus the sulphate constitutes the minerals anhydrite, alabaster, gypsum, and selenite; the carbonate occurs dissolved in most natural waters and as the minerals chalk, marble, calcite, aragonite; also in the double carbonates such as dolomite, bromlite, barytocalcite; the fluoride as fluorspar; the fluophosphate constitutes the mineral apatite; while all the more important mineral silicates contain a proportion of this element.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
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These two forms are called aragonite and calcite.
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Strontium concentrations in seawater reflect the diagenesis of Sr-rich aragonite to calcite on continental shelves.
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They can be separated into three distinct groups of authigenic carbonates, including a first stage with botryoidal aragonite, a second stage of clotted micrite, and a third stage of blocky spar.
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calcium carbonate occurs in the allomorphs calcite and aragonite
