Jarosite - Encyclopedia


GEOGRAPHICAL NAMES Spanish Simplified Chinese French German Russian Hindi Arabic Portuguese

JAROSITE, a rare mineral species consisting of hydrous potassium and aluminium sulphate, and belonging to the group of isomorphous rhombohedral minerals enumerated below: Alunite.. K2 [Al(OH)216 (S04)4 Jarosite K2 [Fe(OH) 2 ] 6 (S04)4 Natrojarosite Nat [Fe(OH) 2 ] 6 (S04)4 Plumbojarosite Pb [Fe(OH) 2 ] 6 (S04)4 Jarosite usually occurs as drusy incrustations of minute indistinct crystals with a yellowish-brown colour and brilliant lustre. Hardness 3; sp. gr. 3.15. The best specimens, consisting of crystalline crusts on limonite, are from the Jaroso ravine in the Sierra Almagrera, province of Almeria, Spain, from which locality the mineral receives its name. It has been also found, often in association with iron ores, at a few other localities. A variety occurring as concretionary or mulberry-like forms is known as moronolite (from Gr. ,uc&pov, " mulberry," and XtOos, "stone"); it is found at Monroe in Orange county, New York. The recently discovered species natrojarosite and plumbojarosite occur as yellowish-brown glistening powders consisting wholly of minute crystals, and are from Nevada and New Mexico respectively. (L. J. S.)

Custom Search

Encyclopedia Alphabetically

A * B * C * D * E * F * G * H * I * J * K * L * M * N * O * P * Q * R * S * T * U * V * W * X * Y * Z

Advertise Here

Feedback





- Please bookmark this page (add it to your favorites)
- If you wish to link to this page, you can do so by referring to the URL address below.

https://theodora.com/encyclopedia/j/jarosite.html

This page was last modified 29-SEP-18
Copyright © 2021 ITA all rights reserved.