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Jahnsite-(CaMnMn) & Phosphosiderite & Hureaulite

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CHP909574

Jahnsite-(CaMnMn) & Phosphosiderite & Hureaulite

Classic Locality

Description Tabs

Description
Locality: 
Vela Nordeste Quarry, Vela, Guarda, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.3 × 1.5 cm
Description

beautiful specimen with very good yellow crystals of jahnsite-(CaMnMn) with fantastic crystalline balls of violet phosphosiderite on salmon orange colour of hureaulite on matrix.

c. 4151

Mineral Data
What's on the rock

Jahnsite-(CaMnMn)

Formula: 
{Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0
Streak: 
White
Type Locality: 
Cubos-Mesquitela-Mangualde area, Mangualde, Viseu District, Portugal

Phosphosiderite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.05
Hardness: 
3.5 - 4.0
Type Locality: 
Kalterborn Mine, Eiserfeld, Siegerland, North Rhine-Westphalia, Germany

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

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