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单词 apophyllite
释义 apophyllite
[ǝ`päf·ǝ´līt]
MINERALOGY
A hydrous calcium potassium silicate containing fluorine and occurring as a secondary mineral with zeolites with geodes and other igneous rocks; the composition is variable but approximates KFCa4(Si2O5)4·8H2O. Also known as fish-eye stone.
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