| 释义 |
columbite Min.|kəˈlʌmbaɪt|
[f. columbium + -ite.]
The native ore of columbium, a black columbate of iron and manganese; niobite.
1805R. Jameson Min. II. 583 As it does not contain the metal in a metallic state I have..denominated it Columbite. 1809Wollaston in Phil. Trans. XCIX. 247 In appearance the columbite is so like tantalite, that it is extremely difficult to discern a difference. 1868Dana Min. §474. |