varisciten.
/ˈvarɪsʌɪt//ˈvarɪskʌɪt/ Mineralogy.
An orthorhombic hydrated aluminium phosphate, AlPO4.2H2O, which is dimorphous with metavariscite and occurs usually as green or colourless, translucent or transparent, fine-grained masses, crusts, and nodules.
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the world > the earth > minerals > types of mineral > phosphates > [noun] > hydrous aluminium phosphates
hydrargillite1805
wavellite1805
brazilianite1818
lasionite1819
peganite1832
fischerite1846
variscite1850
planerite1868
sphaerite1868
trolleite1868
metavariscite1925
1850 D. T. Ansted Elem. Course Geol. ix. 187 Variscite is also a phosphate of alumina, of a green colour.
1912 Proc. U.S. National Mus. 1911–12 41 415 The variscite and variscite-matrix from this locality would yield very beautiful gems for the so-called barbaric jewelry.
1964 Amer. Mineralogist 49 445 X-ray powder data are given on redondite from Ponikla and Listenec, Czechoslovakia, from Redonda Island, and for tangaite from Tanganyika... Redondite (and tangaite) give patterns that are identical and distinct from those of variscite and clinovariscite... The authors feel that the name redondite should be used for all material of this type with Al > Fe and the name tangaite is superfluous.
1975 Mineral Abstr. 26 225/2 Variscite, crandallite, and redondite, relatively rare phosphate minerals, are found in phosphatic rocks associated with carbonatites and syenites in the Grande islet (Brava island) Cape Verde.
1979 Arizona Highways Apr. 40/1 I did a series of shields with variscite, which is a dark stone that has some turquoise in it.
This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2019).
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n.1850