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Geigerite

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CHA511941

Geigerite

Rare Mineral

Description Tabs

Description
Locality: 
Monte Nero Mine, Rocchetta Vara, La Spezia Province, Liguria, Italy
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 1.8 × 0.9 cm
Description

rich specimen: white/colourless cristalline aggregates of geigerite on matrix.

the Geigerite is one of the much rare mineral of liguria region: many of the specimens in the collections aren't tested and many are not geigerite.

this specimen is tested

Mineral Data
What's on the rock

Geigerite

Formula: 
Mn2+5(AsO4)2(HAsO4)2·10H2O
Strunz: 
8.CE.05
Hardness: 
3.0
Type Locality: 
Falotta, Tinizong (Tinzen), Oberhalbstein (Surses; Sursass), Albula Valley, Grischun (Grisons; Graubünden), Switzerland

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