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  • Columbite: The mineral columbite-tantalite information and

    Columbite is the niobium-rich member, and Tantalite is the tantalum-rich member. Columbite is named after its niobium content, which was previous known as columbium prior to its renaming. Columbite is the most important mineral containing the rare element niobium and is its main ore.

  • Columbite-Tantalite: Mineral information, data and localities.

    Columbite-(Fe), Columbite-(Mn), Stibiocolumbite, Stibiotantalite, Tantalite-(Fe), Tantalite-(Mn) A generic name for minerals of the Columbite/Tantalite families which are difficult to distinguish without sophisticated tests.

  • Coltan Wikipedia

    OverviewProduction and supplyUse and demandEthics of mining in the Democratic Republic of CongoEnvironmental concernsPrice increases and changes in demandSee alsoExternal links

    Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which are extracted the elements niobium and tantalum. The niobium-dominant mineral in coltan is columbite (after niobium's original American name columbium), and the tantalum-dominant mineral is the tantalite. Tantalum from coltan is used to manufacture tantalum capacitorswhich are used for mobile phones, per

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  • Coltan [Columbite-Tantalites] Ore

    Mar 23, 2018· businessadvisory Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are are extracted. The niobium-dominant mineral in coltan is columbite (after niobium’s original American name, columbium), and the tantalum-dominant mineral is tantalite.

  • What Are Conflict Minerals? Source Intelligence 3TG

    The term “conflict minerals” is defined as columbite-tantalite, also known as coltan (from which tantalum is derived); cassiterite (tin); gold; wolframite (tungsten); or their derivatives; or any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo or an adjoining country.

  • Columbite Tantalite Master Class Mineral Life's

    Columbite, [(Fe, Mn)(Nb, Ta)2O6], also called ferrocolumbite, niobite, niobite-tantalite and columbate is a dull gray to black mineral that is an ore of niobium and tantalum.It

  • Effects of columbite/tantalite (COLTAN) mining activities

    The mining of columbite/tantalite (COLTAN) has a negative effect on the different spheres of the environment notably; hydrosphere, lithosphere, and the atmosphere (Eisler 2004). Just like gold

  • Tantalite: The mineral columbite-tantalite information and

    Tantalite forms a solid solution series with Columbite known as the Columbite-Tantalite series. Tantalite is the tantalum-rich member, and Columbite is the niobium-rich member. Tantalite is named after its tantalum content, and, together with Columbite

  • Columbite-Tantalite: Mineral information, data and localities.

    Columbite-(Fe), Columbite-(Mn), Stibiocolumbite, Stibiotantalite, Tantalite-(Fe), Tantalite-(Mn) A generic name for minerals of the Columbite/Tantalite families which are difficult to distinguish without

  • Columbite mineral Britannica

    the columbite–tantalite series (in which columbite [FeNb 2 O 6] and tantalite [FeTa 2 O 6] occur in highly variable ratios) and the pyrochlore–microlite series of minerals. Native tantalum metal with some niobium and traces of manganese and gold

  • East Coast Minerals Uganda GOLD,DIAMOND,TANTALITE

    Coltan is the industrial name for columbite tantalite, a dull black metallic ore from which the elements niobium (formerly "columbium") and tantalum are extracted. Read More East Coast Minerals Uganda

  • Columbite Tantalite Master Class Mineral Life's

    Columbite, [(Fe, Mn)(Nb, Ta)2O6], also called ferrocolumbite, niobite, niobite-tantalite and columbate is a dull gray to black mineral that is an ore of niobium and tantalum.It has a sub-metallic luster and a high specific gravity and is a niobate of iron and

  • Tantalite Ilota Mining (Gold in Uganda, Gold Refinery

    The mineral group tantalite [(Fe, Mn)Ta 2 O 6] is the primary source of the chemical element tantalum.It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or “columbite-tantalite” in many mineral guides.However, tantalite has a much greater specific gravity than columbite (8.0+ compared to columbite’s 5.2).

  • Effects of columbite/tantalite (COLTAN) mining activities

    The mining of columbite/tantalite (COLTAN) has a negative effect on the different spheres of the environment notably; hydrosphere, lithosphere, and the atmosphere (Eisler 2004). Just like gold mining, COLTAN extraction involves the breaking of crystallographic bond

  • Columbite-Tantalite: Mineral information, data and localities.

    Columbite-(Fe), Columbite-(Mn), Stibiocolumbite, Stibiotantalite, Tantalite-(Fe), Tantalite-(Mn) A generic name for minerals of the Columbite/Tantalite families which are difficult to distinguish without sophisticated tests.

  • Columbite Tantalite Source Laerskool Secunda

    (A) columbite-tantalite (coltan), cassiterite, gold, wolframite, or their derivatives; or (B) any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo or an adjoining country.

  • Conflict Minerals Welcome to ERAI

    Conflict Minerals The conflict minerals, often referred to as “gold and the 3Ts”, defined by Section 1502 of the Dodd-Frank Act are gold, cassiterite, columbite-tantalite and wolframite and their derivatives. Gold which is commonly used to coat wiring, in chemical compounds during the semiconductor manufacturing process and aerospace equipment.

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