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单词
melanocerite
释义
melanocerite
melanocerite
[
¦mel·ə·nō′se‚rīt
]
(mineralogy)
(Ca,Ce,Y)
8
(BO
3
)(SiO
4
)
4
(F,OH)
4
A brown or black rhombohedral mineral composed of complex silicate, borate, fluoride, tantalate, or other anion of cerium, yttrium, calcium, and other metals; occurs as crystals.
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更新时间:2025/7/17 20:42:13