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Halotrichite & Magnesiocopiapite

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SMM802023

Halotrichite & Magnesiocopiapite

Description Tabs

Description
Locality: 
Argentiera Della Nurra Mine, Sassari Province, Sardinia, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.5 × 1.5 cm
Description

A pale yellow masse of microcrystals of magnesiocopiapite, and few silky, white, masses of hair-like crystals of halotrichite. A good specimen from a recent personal find.

Boxed with Label
Mineral Data
What's on the rock

Halotrichite

Formula: 
FeAl2(SO4)4·22H2O
Strunz: 
7.CB.85
Hardness: 
1.5 - 2.0
Streak: 
White

Magnesiocopiapite

Formula: 
MgFe3+4(SO4)6(OH)2·20H2O
Strunz: 
7.DB.35
Hardness: 
2.5 - 3.0
Type Locality: 
Blythe, Riverside Co., California, USA

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