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单词 saponite
释义 saponite
 /sap"euh nuyt'/,  n.  
 a clay mineral, hydrous magnesium aluminum silicate, belonging to the montmorillonite group: found as a soft filling in rock cavities.
 [1840-50; < Sw saponit < L sapon- (s. of sapo) SOAP + Sw -it -ITE1]
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