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Chalcophyllite

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PJM154971

Chalcophyllite

Description Tabs

Description
Locality: 
Majuba Hill Mine, Antelope, Pershing County, Nevada, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2 × 1.3 cm
Description

A showy and excellent specimen of lustrous, turquoise-blue chalcophyllite blades richly scattered on matrix from the famous Majuba Hill Mine of Nevada. Standing up to several millimeters high and showing sharp form, these are huge crystals for the locale. Chalcophyllite is an uncommon hydrated copper aluminum sulfate-arsenate

Mineral Data
What's on the rock

Chalcophyllite

Formula: 
Cu18Al2(SO4)3(AsO4)3(OH)27·33H2O
Strunz: 
8.DF.30
Crystal System: 
Trigonal
Hardness: 
2.0
Earthstones Australia

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