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Wollastonite Psm Andradite

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PDM705358

Wollastonite Psm Andradite

Pseudomorph

Description Tabs

Description
Locality: 
Žulová, Jeseník, Olomouc Region, Czech Republic
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 4.5 × 3.5 cm
Description

From my own pseudomorph’s collection, this is a rhombododecahedral crystal of andradite largely replaced by white fibrous wollastonite. Uncommon specimen in collections. Acquired in 2004.

Mineral Data
What's on the rock

Wollastonite

Formula: 
CaSiO3
Strunz: 
9.DG.05
Hardness: 
4.5 - 5.0
Streak: 
White

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

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