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norbergite

noun nor·berg·ite \ ˈnȯrˌbərˌgīt \

Definition of norbergite

plural -s
:a mineral Mg3SiO4(F,OH)2 of the humite group composed of a magnesium silicate with fluorine and hydroxyl

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Origin and Etymology of norbergite

Swedish norbergit, from Norberg, Västmanland, Sweden, its locality + Swedish -it -ite

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