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Jahnsite-(CaMnMn) & Hureaulite

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SER784799

Jahnsite-(CaMnMn) & Hureaulite

Type Locality

Description Tabs

Description
Locality: 
Regada, Mangualde, Viseu District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 3.1 × 2.1 cm
Description

several tiny light brown crystals of jahnsite-(CaMnMn) on pink hureaulite from its type locality

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

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