How To Use Columbite In A Sentence
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Columbite is the ore of niobium, which is used in steels and high strength alloys.
Lounge of the Lab Lemming
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Niobium and tantalum— coltan is short for columbite-tantalite.
Times, Sunday Times
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Overall, Congo has over half the world's cobalt, one-third of its diamonds, and three-fourths of its vital columbite-tantalite or "coltan," essential for computer chips, circuit boards, mobile phones, laptops, and other electronic devices.
Printing: Reviewing F. William Engdahl's "Full Spectrum Dominance:" Part II
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Rhenium does not form minerals of its own, but it does occur as a trace element in columbite, tantalite and molybdenite.
Rhenium
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The younger granites form rugged hills of Jurassic age, and contain tinstone and columbite.
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The abundance of these elements in the parental magma leads to the formation of less-common minerals such as apatite, beryl, topaz, amblygonite, lepidolite, spodumene tantalite, columbite, monazite, zircon, and uraninite.
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Beryl, columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers.
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The quartz and albite contain small dark inclusions of cassiterite and columbite-tantalite-group minerals.
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The minerals in question—cassiterite, columbite-tantalite, gold and wolframite—are widely used in consumer electronics and other products, although Congo supplies no more than 20% of global demand for these raw materials.
Can Annual Reports Save Lives?
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The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.
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Among these riches is coltan - columbite tantalite - a mineral highly prized for its use in a number of consumer electronic products, among other things.
Iara Lee: Blood Gadgetry -- Why I am Going to the Congo
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On Boing Boing Gadgets, this wrenching video in which Eve Ensler explains that Congolese militias use rape to enforce discipline among a slave workforce that mines columbite-tantalite ore, a common raw material for many devices.
Boing Boing
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It occurs most commonly in the minerals columbite, tantalite, and microlite.
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There's a crucial element in the manufacture of cell phones, laptops and the like called columbite-tantalite (or coltan).
Latest Articles
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Tantalum is recovered from ore minerals such as columbite and tantalite.
Tantalum
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Coltan is the industrial name for columbitetantalite.
Times, Sunday Times
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These minerals are columbite, microlite, futile, thorite, and zircon.
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In older Glossaries there were listings following both columbite and tantalite that referred the reader to ferrocolumbite, magnocolumbite, manganocolumbite, and so on.
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A previous study of the columbite-tantalite series minerals indicated a similar change for tin, tantalum, niobium, and manganese.
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Purple lepidolite and gray spodumene also can be found, and microcrystals of mangano-columbite are common.
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The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.
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The area has been a prolific source of smoky quartz, amazonite, occasional topaz, and other accessory minerals, including albite, fluorite, phenakite, columbite, cassiterite, goethite, and many others.
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It is most abundant in the coarse-grained facies and is often associated with triphylite, columbite, and sphalerite.
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Dogo Nahawa sits amid rolling hills, surrounded by former tin and columbite mines.
Massacres Shake Uneasy Nigeria
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They are probably present in the form of columbite, a niobate of iron and manganese; and tantalite, a tantalate of the same metals.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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The area has been a prolific source of smoky quartz, amazonite, occasional topaz, and other accessory minerals, including albite, fluorite, phenakite, columbite, cassiterite, goethite, and many others.
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The minerals in question—cassiterite, columbite-tantalite, gold and wolframite—are widely used in consumer electronics and other products, although Congo supplies no more than 20% of global demand for these raw materials.
Can Annual Reports Save Lives?
