jarosite
Ja*ro"site, n. Etym: [From Barranco Jaroso, in Spain.] (Min.) Defn: An ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.
Ja*ro"site, n. Etym: [From Barranco Jaroso, in Spain.] (Min.) Defn: An ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.