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Yanomamite Scorodite & Cassiterite

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ESM632441

Yanomamite Scorodite & Cassiterite

Rare Mineral

Description Tabs

Description
Locality: 
Mangabeira Deposit, Monte Alegre de Goiás, Goiás, Brazil
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2.5 × 1.8 cm
Description

Colourless yanomamite crystal on greyish scorodite with minor brown cassiterite

Mineral Data
What's on the rock

Yanomamite

Formula: 
InAsO4·2H2O
Strunz: 
8.CD.10
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 4.0
Streak: 
White
Type Locality: 
Mangabeira deposit, Monte Alegre de Goiás, Goiás, Brazil

Scorodite

Formula: 
Fe3+AsO4·2H2O
Strunz: 
8.CD.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Type Locality: 
Stamm Asser Mine, Graul, Langenberg, Schwarzenberg District, Erzgebirge, Saxony, Germany

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0