| 单词 | tantalite |
| 例句 | The Democratic Republic of the Congo has abundant reserves of diamonds, gold, coltan, copper, tantalite, wolframite, manganese and uranium. Congo's Blood Diamond Trade Takes Hit From Dodd-Frank Wall Street Reform Law 2014-06-13T04:00:00Z These elements occur in the minerals columbite and tantalite, and their compounds became known in the early part of the 19th century by the labours of C. Hatchett, A.G. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" It is a constituent of certain rare minerals, such as tantalite. A Text-book of Assaying: For the Use of Those Connected with Mines. They are probably present in the form of columbite, a niobate of iron and manganese; and tantalite, a tantalate of the same metals. A Text-book of Assaying: For the Use of Those Connected with Mines. |
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