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单词
davidite
释义
davidite
davidite
[
′dā·və‚dīt
]
(mineralogy)
A black primary pegmatite uranium mineral of the general formula A
6
B
15
(O,OH)
36
, where A = Fe
2+
, rare earths, uranium, calcium, zirconium, and thorium, and B = titanium, Fe
3+
, vanadium, and chromium.
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更新时间:2025/9/19 0:23:32