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Geigerite

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CHA199590

Geigerite

extremely rare

Description Tabs

Description
Locality: 
Monte Nero Mine, Rocchetta Vara, La Spezia Province, Liguria, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 0.6 × 0.2 cm
Description

specimen with a tuft of white needles in matrix of the extremely rare mineral geigerite from the monte nero mine

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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