† triclasiten.
Mineralogy. Obsolete.
Obsolete synonym of fahlunite n.
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the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > aluminium and one other
petalite1808
sapphirine1823
triclasite1835
neolite1854
maconite1873
melanosiderite1875
sapphirite1883
facellite1891
ganophyllite1892
sursassite1928
1835 Encycl. Brit. XII. 37/1 Triclasite. Specific Gravity 2·61 to 2·66.
1850 D. T. Ansted Elem. Course Geol. §401 Fahlunite, Triklasite, Hydrous silicate of alumina with magnesia, oxide of iron, and oxide of manganese.
1868 J. D. Dana Syst. Mineral. (ed. 5) 485 The name triclasite alludes to three cleavages, and is therefore bad, as they are not cleavages of the species, but in part of the original iolite.
This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).
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