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Dufrénite & Chalcosiderite

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JYJ607497

Dufrénite & Chalcosiderite

Description Tabs

Description
Locality: 
Hollertszug Mine, Dermbach, Altenkirchen, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 8 × 4 cm
Description

A very attractive specimen hosting chalcosiderite on dufrenite crystals. Very attractive old time specimen with old label.

Rare

Mineral Data
What's on the rock

Dufrénite

Formula: 
Ca0.5Fe2+Fe3+5(PO4)4(OH)6·2H2O
Strunz: 
8.DK.15
Hardness: 
3.5 - 4.5
Streak: 
Green
Type Locality: 
Anglar, Haute-Vienne, Limousin, France

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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