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Natrosilite & Potassic-arfvedsonite

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CSL130475

Natrosilite & Potassic-arfvedsonite

Description Tabs

Description
Locality: 
Palitra Pegmatite, Karnasurt Mine, Kedykverpakhk Mountain, Murmansk Oblast, Russian Federation
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.9 × 1 cm
Description

This is a K rich arfvedsonite, occurs as dark green crystals in association with white, pearly cleavages of natrosilite on pinkish ussingite matrix, .

Mineral Data
What's on the rock

Natrosilite

Formula: 
Na2Si2O5
Strunz: 
9.EE.40
Crystal System: 
Monoclinic
Hardness: 
0.0
Type Locality: 
Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Potassic-arfvedsonite

Formula: 
[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2
Strunz: 
9.DE.25
Hardness: 
0.0
Type Locality: 
Potassic-Arfvedsonite occurrence, Pegmatite Valley, Lilleelv, Head of Kangerluarsuk, Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland
Loranth Minerals

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