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Ferrinatrite & Gypsum

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SER523129

Ferrinatrite & Gypsum

Rare Mineral

Description Tabs

Description
Locality: 
Le Cetine di Cotorniano Mine, Chiusdino, Siena Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.1 × 3 cm
Description

A rich specimen featuring hundreds white tufts of ferrinatrite on gypsum

Mineral Data
What's on the rock

Ferrinatrite

Formula: 
Na3Fe(SO4)3·3H2O
Strunz: 
7.CC.35
Hardness: 
2.5
Type Locality: 
La Compañia Mine, Caracoles, Sierra Gorda District, Antofagasta Province, Antofagasta Region, Chile

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.