Difference between revisions of "Coquimbite"
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== Other Properties == | == Other Properties == | ||
Revision as of 08:19, 7 October 2013
Description
A yellowish brown to violet hydrated iron sulfate mineral. Coquimbite was named after the province of Coquimbo in Chile where it was first described in 1841.
Synonyms and Related Terms
coquimbit; coquimbita
Other Properties
Crystal structure is massive or granular, but may occur in plates or prisms. Fracture = uneven Cleavage = imperfect Luster=vitreous Streak = white
| Composition | Fe2(SO4)3.9H2O |
|---|---|
| Mohs Hardness | 2.5 |
| Density | 2.0-2.1 |
| Molecular Weight | 562.02 |
| Refractive Index | 1.55; 1.557 |
Additional Information
Web Minerals: Coquimbite
Authority
- Website address 1 Comment: Webminerals at http://webmineral.com/data/Coquimbite.shtml;
- Website address 2 Comment: Mindat at http://www.mindat.org/min-1126.html
- Website address 3 Comment: http://labs.sci.qut.edu.au/minerals/mineral%20general%20descriptions/C/coquimbitepcd.htm