| 单词 | brookite |
| 释义 | brookite [`bru̇´kīt] MINERALOGY TiO2 A brown, reddish, or black orthorhombic mineral; it is trimorphous with rutile and anatase, has hardness of 5.5-6 on Mohs scale, and a specific gravity of 3.87-4.08. Also known as pyromelane. |
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