Definition of muromontite
: a mineral Be2FeY2(SiO4)3(?) consisting of a silicate of yttrium, iron, and beryllium that is perhaps identical with gadolinite or is a variant of clinozoisite
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Origin and Etymology of muromontite
German muromontit, from Muromontium (Mauersberg) in Saxony, Germany, its locality + German -it -ite
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