sarmientiten.
/sɑːmiːˈɛntʌɪt/ Mineralogy.
A monoclinic hydrated basic arsenate and sulphate of ferric iron, Fe2(AsO4)(SO4)(OH).5H2O, found as pale yellow-orange microcrystalline nodules.
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the world > the earth > minerals > types of mineral > sulphates > [noun] > sulphates of two plus elements > hydrous or hydrated > basic
spangolite1890
mooreite1929
sarmientite1941
torreyite1949
1941 Angelelli & Gordon in Notulae Naturae (Acad. Nat. Sci. Philadelphia) 16 Sept. 1 (heading) Sarmientite, a new mineral from Argentina.
1941 Science 26 Sept. (Suppl.) 9/1 Called sarmientite.., the new mineral is found in fair-sized nodules of great purity, of a pale yellow-orange color, in iron sulfate deposits of the Santa Elena mine.
1968 Amer. Mineralogist 53 2081 When heated at 300° C for one hour sarmientite yields a buff colored product, amorphous to X-rays.
This entry has not yet been fully updated (first published 1982; most recently modified version published online June 2018).
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n.1941