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Arfvedsonite

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HEF743419

Arfvedsonite

Description Tabs

Description
Locality: 
Tuperssuatsiat Bay, Tunulliarfik Fjord, Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
10.4 × 6.8 × 3.5 cm
Description

Black crystals of arfvedsonite on matrix

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

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