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Arfvedsonite

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PAU24751

Arfvedsonite

Description Tabs

Description
Locality: 
Mount Malosa, Zomba, Southern Region, Malawi
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 5.9 × 4.4 cm
Largest Crystal: 
3.70cm
Description

Black and vitreous crystal up to 3,7 cm. over orthoclase and minor quartz.

Well terminated and elongated prisms.

Mineral Data
What's on the rock

Arfvedsonite

Formula: 
[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
Strunz: 
9.DE.25
Hardness: 
5.0 - 6.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland