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Kastningite & Rittmannite

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CHP904593

Kastningite & Rittmannite

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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: 
3.1 × 1.8 × 1.2 cm
Description

specimen with white radiating or crystals of kastnigite with associate yellow radiating rittmannite on matrix.

c. 4081

Mineral Data
What's on the rock

Kastningite

Formula: 
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Crystal System: 
Triclinic
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Silbergrube, Waidhaus, Upper Palatinate, Bavaria, Germany

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

Seller Information

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