| columbite | [โคลัมไบต์] (n) แร่โคลัมไบต์ (สินแร่ชนิดหนึ่งของธาตุแทนทาลัมในธรรมชาติ) |
| columbite-tantalite | (n) a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips, Syn. coltan |
| Columbite | n. [ Cf. F. colombite. See Columbium. ] (Min.) A mineral of a black color, submetallic luster, and high specific specific gravity. It is a niobate (or columbate) of iron and manganese, containing tantalate of iron; -- first found in New England. [ 1913 Webster ] |
| コルタン | [korutan] (n) coltan; columbite-tantalite [Add to Longdo] |
| コロンバイト | [koronbaito] (n) columbite (mineral combining niobite and tantalite) [Add to Longdo] |