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单词 pirssonite
释义 pirs·son·ite
\ˈpirsənˌīt, ˈpər-\ noun
(-s)
Etymology: Louis V. Pirsson died 1919 American mineralogist + -ite
: a mineral Na2Ca(CO3)2.2H2O consisting of a hydrous calcium sodium carbonate and occurring in white or colorless orthorhombic crystals (hardness 3, specific gravity 2.35)
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