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Coquimbite & Goldichite

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WND586947

Coquimbite & Goldichite

Rare Mineral

Description Tabs

Description
Locality: 
Dexter #7 Mine, Calf Mesa, Emery County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 2.8 × 2 cm
Description

Two rare minerals are featuring a contarstful and colourful combo piece in excellent shape. The hexagonal intense violet and well developed crystals of coquimbite are accompanied by acicular, greenish-yellow goldichite. And the origin of this fine specimen is not in Chile. It´s the Dexter No. 7 Mine in Utah. Comes with original label of E.M. Gunnell, Denver, CO.

Mineral Data
What's on the rock

Coquimbite

Formula: 
Fe2-xAlx(SO4)3·9H2O, x ~0.5
Strunz: 
7.CB.55
Hardness: 
2.5
Streak: 
white
Type Locality: 
Coquimbo Region, Chile

Goldichite

Formula: 
KFe(SO4)2·4H2O
Strunz: 
7.CC.40
Hardness: 
2.5 - 0.0
Streak: 
White
Type Locality: 
Dexter No. 7 Mine, Calf Mesa, San Rafael District (San Rafael Swell), Emery Co., Utah, USA
Wendel Minerals

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