bertranditen.
/ˈbəːtrəndʌɪt/ Mineralogy.
Hydrous silicate of beryllium.
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the world > the earth > minerals > types of mineral > silicates > sorosilicates > [noun] > others
meionite1808
gehlenite1817
marialite1868
bertrandite1887
lawsonite1895
nasonite1899
thortveitite1912
sklodowskite1924
rankinite1942
nenadkevichite1955
shcherbakovite1955
kilchoanite1961
1887 J. D. Dana Man. Mineral. & Petrogr. (ed. 4) 275 Bertrandite is related to phenacite in composition.
1911 Encycl. Brit. VII. 578/2 Examples of other substances belonging to this [sc. pyramidal] class are..Bertrandite (H2Be4Si2O9).
1914 Parl. Papers LXXI. 414 Twinned crystals of felspar from Portugal and of bertrandite from Cornwall have been measured and described.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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