Coquimbite

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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

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