3 Results for -columbite-
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หรือค้นหา: -columbite-, *columbite*Longdo Unapproved EN-TH
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| columbite | [โคลัมไบต์] (n) แร่โคลัมไบต์ (สินแร่ชนิดหนึ่งของธาตุแทนทาลัมในธรรมชาติ) |
Collaborative International Dictionary (GCIDE)
| 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 ] |
WordNet (3.0)
| columbite-tantalite | (n) a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips, Syn. coltan |
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