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Rittmannite

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CHP1037618

Rittmannite

Classic Locality

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Description
Locality: 
Fonte da Cal Mine, Bendada Mines, Bendada, Sabugal, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.9 × 2.3 cm
Description

specimen with many aggregates of beautiful yellw crystals of rittmannite on matrix.

c. 7900

Mineral Data
What's on the rock

Rittmannite

Formula: 
{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
3.5
Type Locality: 
Cubos-Mesquitela-Mangualde area, Mangualde, Viseu District, Portugal

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