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Mackayite

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CR628103

Mackayite

Classic Locality

Description Tabs

Description
Locality: 
San Miguel Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 3.5 × 2.7 cm
Description

Mackayite is a very rare Fe-tellurite found in the oxidation zone of Au-Te deposits.
Sparkly green mackayite crystals richly covers the matrix on this rare and excellent specimen from an obscure Mexican Au-Te locale, where specimens of any species are very uncommon.
With intergrown native tellurium.

Mineral Data
What's on the rock

Mackayite

Formula: 
Fe3+(Te4+2O5)(OH)
Strunz: 
4.JL.10
Hardness: 
4.5
Type Locality: 
Mohawk Mine, Goldfield, Goldfield District, Esmeralda Co., Nevada, USA