Difference between revisions of "Coquimbite"

From CAMEO
Jump to: navigation, search
(talk)
Line 7: Line 7:
  
 
coquimbit; coquimbita
 
coquimbit; coquimbita
 +
 +
[[[SliderGallery rightalign| Slide4_coquimbite.PNG~XRF]]]
  
 
== Other Properties ==
 
== Other Properties ==

Revision as of 09:19, 7 October 2013

Coquimbite

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

XRF

Slide4 coquimbite.PNG


Other Properties

Crystal structure is massive or granular, but may occur in plates or prisms. Fracture = uneven Cleavage = imperfect Luster=vitreous Streak = white

Coquimbite
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

Retrieved from "http://cameo.mfa.org/index.php?title=Coquimbite&oldid=40439"