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Jahnsite-(CaMnMn)

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CHP884434

Jahnsite-(CaMnMn)

Classic Locality

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Description
Locality: 
Assunção Mine, Aldeia Nova, Sátão, Viseu District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2.5 × 2.2 cm
Description

specimen with many very good yellow groups of crystals of jahnsite-(CaMnMn) on matrix.

c. 3249

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

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