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单词 thorianite
释义 thorianite
[`thȯr·ē·ǝ´nīt]
MINERALOGY
ThO2 A radioactive mineral that crystallizes in the isometric system, occurs in worn cubic crystals, is brownish black to reddish brown in color, and has resinous luster; hardness is 7 on the Mohs scale, and specific gravity is 9.7-9.8.
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