JAROSITE

Etymology

After the place Jaroso ravine in Spain, named in 1852.

Noun

jarosite (countable and uncountable, plural jarosites)

(mineral) A mineral with rhombohedral crystals, KFe₃³⁺(SO₄)₂(OH)₆.

Source: Wiktionary

Ja*ro"site, n. Etym: [From Barranco Jaroso, in Spain.] (Min.)

Definition: An ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.

Source: Webster’s Unabridged Dictionary 1913 Edition