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Aluminian Strengite Cacoxenite & Chalcosiderite

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CR73412

Aluminian Strengite Cacoxenite & Chalcosiderite

Description Tabs

Description
Locality: 
Miguel Vacas Mine, Conceição, Vila Viçosa, Evora District, Portugal
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 7 × 5 cm
Description

This is a extremely rich phosphate specimen from the long closed Miguel Vacas Mine.

Lustrous white to pale pink Al-Strenigte sphaerolites on orange-yellow cacoxenite crystals with pale green chalcosiderite microcrystals all over the shist matrix.

# 10

Mineral Data
What's on the rock

Aluminian Strengite

Variety Of: 

Strengite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.10
Hardness: 
3.5 - 4.0
Hardness: 
0.0

Cacoxenite

Formula: 
Fe3+24Al(PO4)17O6(OH)12·17H2O
Strunz: 
8.DC.40
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Chalcosiderite

Formula: 
Cu(Fe3+,Al)6(PO4)4(OH)8·4H2O
Strunz: 
8.DD.15
Crystal System: 
Triclinic
Hardness: 
4.5
Type Locality: 
Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
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