| 单词 | rare mineral |
| 释义 | rare mineral They are mining for a rare mineral, obviously. Times, Sunday Times Others included 'kernite', a rare mineral, which won 100 points. Times, Sunday Times It occurs naturally as the rare mineral monteponite. Retrieved from Wikipedia CC BY-SA 3.0 The alpha phase has orthorhombic symmetry; it has been first synthesized in 1941 and identified in nature as a rare mineral scrutinyite in 1988. Retrieved from Wikipedia CC BY-SA 3.0 It occurs as a rare mineral in high-temperature hydrothermal or metasomatic deposits. Retrieved from Wikipedia CC BY-SA 3.0 |
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