Polyhalite
id:
polyhalite-180-18593988
title:
Polyhalite
text:
Polyhalite is an evaporite mineral, a hydrated sulfate of potassium, calcium and magnesium with formula: K2Ca2Mg(SO4)4·2H2O. Polyhalite crystallizes in the triclinic system, although crystals are very rare. The normal habit is massive to fibrous. It is typically colorless, white to gray, although it may be brick red due to iron oxide inclusions. It has a Mohs hardness of 3.5 and a specific gravity of 2.8.
It is used as a fertilizer. Polyhalite was first described in 1818 for specimens from its t
brand slug:
wiki
category slug:
encyclopedia
description:
Sedimentary mineral
original url:
https://en.wikipedia.org/wiki/Polyhalite
date created:
2005-08-25T09:50:50Z
date modified:
2024-09-05T15:40:52Z
main entity:
{"identifier":"Q425034","url":"https://www.wikidata.org/entity/Q425034"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/d/d8/History_museum_of_Truskavets_081.jpg","width":2048,"height":1536}
fields total:
13
integrity:
16