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bertrandite
[ bur-truhn-dahyt ]
noun
- a mineral, hydrous beryllium silicate, Be 4 Si 2 O 7 (OH) 2 , colorless or pale yellow, with a vitreous luster, occurring as tabular or prismatic crystals in pegmatites and hydrothermal veins.
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Word History and Origins
Origin of bertrandite1
1885–90; < French, after E. Bertrand, French mineralogist, who first described it; -ite 1
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