| 释义 | mal·la·drite \məˈläˌdrīt, ˈmaləˌd-\ noun
 (-s)
 Etymology: Italian, from Alessandro Malladra died 1944 Italian geologist + Italian -ite
 : a sodium fluosilicate Na2SiF6 occurring in minute hexagonal crystals in fumaroles in the crater of Vesuvius near Naples in Italy
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