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  • Coltan - Wikipedia
    Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore, from which the elements niobium and tantalum are extracted The niobium-dominant mineral in coltan is columbite (after niobium's original American name columbium), and the tantalum-dominant mineral is tantalite
  • Coltan mining and ethics - Wikipedia
    Coltan mining and ethics Jump to navigation Jump to search Coltan, also referred to as tantalum, is a metallic ore from which the very similar elements niobium, also known as columbium, and tantalum are extracted Coltan mining has been
  • Tantalite - Wikipedia
    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)
  • Columbite - Wikipedia
    Columbite, also called niobite, niobite-tantalite and columbate [(Fe, Mn)Nb 2 O 6], is a black mineral group that is an ore of niobium In fact, the two are often grouped together as a semi-singular mineral series called columbite-tantalite or coltan in many mineral guides
  • Coltan | Wiki | Everipedia
    Coltan's wiki: Coltan (short for columbite–tantalite and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted The niobium-dominant mineral in coltan is columbite (after niobium's ori
  • Talk:Coltan - Wikipedia
    When coltan is refined it becomes a heat resistant powder with high permittivity Refined coltan is a critical element in creating capacitors, which are used in a vast array of small electronic devices, especially in mobile phones, laptop computers, pagers, and other electronic devices (This is the citation it appears to be trying to get at)
  • Coltán - Wikipedia, la enciclopedia libre
    El coltán [1] [2] —también llamado en su origen coltan— es un mineral metálico negro y opaco compuesto por los minerales columbita y tantalita El coltán no es una denominación científica que se corresponda con un elemento en concreto
  • Coltan – Wikipedia
    Coltan er eit handelsnamn for tantalhaldige mineral i tantalitt- og columbittgruppa Det metalliske grunnstoffet tantal blir brukt i produksjonen av mikrochips (brikker) og vart på slutten av 1990-åra sterkt etterspurt i samband med utviklinga av ny teknologi for bruk i mobiltelefoni og i Playstation 2


















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