A vanadium-containing mineral of the mica group, occurring as minute greenish or brownish scales.
| 单词 | θ6419 |
| 释义 | the world > the earth > minerals > ore > [noun] > metal ore > vanadium, uranium, or radium ore (2) roscoelite1876 A vanadium-containing mineral of the mica group, occurring as minute greenish or brownish scales. carnotite1899 A yellow earthy hydrated vanadate of potassium and uranium, found in south-western Colorado, and worked as a source of vanadium, uranium, and radium… |
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