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Earlshannonite & Dufrénite

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CHP904753

Earlshannonite & Dufrénite

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Description
Locality: 
Sítio do Castelo Mine, Folgosinho, Gouveia, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2 × 0.8 cm
Description

specimen with some very nice brownish tufts of earlshannonite on matrix ith associate dark brown aggregates of dufrenite.

. 4129

Mineral Data
What's on the rock

Earlshannonite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.15
Crystal System: 
Monoclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland Co., North Carolina, USA

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

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