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Rittmannite

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SKY576767

Rittmannite

Rare Mineral

Description Tabs

Description
Locality: 
Bendada Mines, Bendada, Sabugal, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2 × 1.5 cm
Description

Outstanding yellow crystals of the very rare mineral rittmannite on a contrasting matrix from this famous locality in Portugal.

Very nice under the microscope!

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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