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Magnesio-riebeckite

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SER728436

Magnesio-riebeckite

ex Porini collection

Description Tabs

Description
Locality: 
Norra Kärr, Gränna, Jönköping County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.2 × 0.4 cm
Description

Black elongated crystals on matrix ; it comes with an old label

Mineral Data
What's on the rock

Magnesio-riebeckite

Formula: 
◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Strunz: 
9.DE.25
Hardness: 
5.0 - 5.5
Type Locality: 
Alto Chapare District, Chapare Province, Cochabamba Department, Bolivia