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Yecoraite & Tetradymite

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Yecoraite & Tetradymite

Description Tabs

Description
Locality: 
Yécora Municipality, Sonora, Mexico
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.2 × 0.9 cm
Description

Yellow beige yecoraite between grey metallic yecoraite from the type locality. Old systematic material. 

 

Mineral Data
What's on the rock

Yecoraite

Formula: 
Fe3+3Bi5(Te6+O4)2(Te4+O3)O9·9H2O
Strunz: 
7.DF.70
Hardness: 
3.0
Type Locality: 
San Martín de Porres Mine, Yécora, Mun. de Yécora, Sonora, Mexico

Tetradymite

Formula: 
Bi2Te2S
Strunz: 
2.DC.05
Hardness: 
1.5 - 2.0
Type Locality: 
Župkov, Žarnovica Co., Banská Bystrica Region, Slovakia