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单词 boracite
释义 boracite
[`bȯr·ǝ´sīt]
MINERALOGY
Mg3B7O13Cl A white, yellow, green, or blue orthorhombic borate mineral occurring in crystals which appear isometric in external form; it is strongly pyroelectric, has a hardness of 7 on Mohs scale, and a specific gravity of 2.9.
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