出典:Wiktionary
出典:『Wiktionary』 (2026/04/04 23:05 UTC 版)
tantalite (plural tantalites)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/14 12:15 UTC 版)
Tantalite, [(Fe,Mn)(Ta,Nb)2O6], is a mineral group that is close to columbite. 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). Iron-rich tantalite is the mineral tantalite-(Fe) or ferrotantalite and manganese-rich is tantalite-(Mn) or manganotantalite.