To use all functions of this page, please activate cookies in your browser.
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
Greigite is an iron sulfide mineral with formula:Fe(II)Fe(III)2S4. It is a magnetic sulfide analogue of the iron oxide magnetite. Greigite occurs as microscopic (< .03 mm) isometric hexoctahedral crystals and as minute sooty masses. It is a bio-mineral produced by and found in magnetotactic bacteria. It is a pale pink to metallic blue-black mineral with a specific gravity of 4.049 and a Mohs hardness of 4 to 4.5.
Additional recommended knowledge
It was first described in 1964 and named for Penn State mineralogist and physical chemist Joseph W. Greig (1895-1977).
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Greigite". A list of authors is available in Wikipedia.|