columbite-tantalite


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Related to columbite-tantalite: Tantalum Ore
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Synonyms for columbite-tantalite

a valuable black mineral combining niobite and tantalite

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Columbite-tantalite, a composite mineral ore known in Central
Africa offers the United Slates much besides oil, given its dependence on Africa for raw materials such as manganese (for steel production), cobalt and chrome, both of which are vital for alloys especially in aeronautics, vanadium, metals in the platinum group, antimony, gold, fluorspar, germanium, industrial diamonds, and many other lesser-known materials, such as columbite-tantalite (coltan for short), a key component in everything from mobile phones and computer chips to stereos and VCRs (Keenan, 2009a: 127-129).
But Bobek added that as well as raising money for the reserve the scheme is aimed at restricting the mining of coltan or columbite-tantalite, a metallic ore used in the production of electronics, especially mobiles.
Conflict flared in the Kivu provinces over mining access to coltan--short for columbite-tantalite and used in cell phones and computer chips--and cassiterite, a heavy dark mineral that is the chief source of tin.
Simultaneous determination of tantalum, Niobium, thorium and uranium in placer columbite-tantalite from the Akim Oda District of Ghana by epithermal instrumental neutron activation analysis', J.
The pegmatite is hosted in gray gneiss and consists of albite, cleavelandite, quartz, muscovite, beryl, schorl and columbite-tantalite.
The massive demand for coltan - short for columbite-tantalite - has fuelled a desperate and bloody battle to seize the river beds where it can be mined.
But few are aware that today, Africa provides columbite-tantalite, the mineral from which most computer chips are made.
In reality, these leaders who include the current presidents of Uganda, Rwanda, Ethiopia, Angola, Eritrea, Burundi, and the Democratic Republic of the Congo preside over countries where ethnic and civil turmoil permit unscrupulous international mining companies to take advantage of the strife to fill their own coffers with conflict diamonds, gold, copper, platinum, and other precious minerals, including one -- columbite-tantalite or `coltan' -- which is a primary component of computer microchips and printed circuit boards.
In reality, these leaders, who include the current presidents of Uganda, Rwanda, Ethiopia, Angola, Eritrea, Burundi, and the DRC preside over countries where ethnic and civil turmoil permit unscrupulous international mining companies to take advantage of the strife to fill their own coffers with conflict diamonds, gold, copper, platinum, and other precious minerals, including one - columbite-tantalite or 'coltan'- which is a primary component of computer microchips and printed circuit boards.
grade) (t) 76,321 98,375 94,757 Barite (t) 40,587 87,052 107,707 Gypsum 4,549 5,477 5,753 Feldspar (sodium) 288 487 295 Limestone for cement 14,100 15,966 19,521 Kaolin (washed) 223 176 208 Ball clay (t) 86,890 134,941 183,313 Glass and 242 296 422 Dolomite 140 258 380 Marble (t) 42,553 54,459 55,337 Granite (t) 21,216 34,153 57,460 Lignite 7,274 8,899 12,421 Zircon (t) 5,098 1,496 490 Ilmenite (t) 16,455 16,955 10,554 Columbite-tantalite (t) 125 109 9
4128), which would establish penalties for the import of columbite-tantalite, cassiterite and wolframite, and the Senate has approved S.
Minerals of the columbite-tantalite series are found as accessories in the intermediate zones.