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Arfvedsonite On Microcline

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CR17830

Arfvedsonite On Microcline

Description Tabs

Description
Locality: 
Hurricane Mountains, North Conway, Carroll County, New Hampshire, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 5.8 × 3 cm
Largest Crystal: 
1.30cm
Description

A very good arfvedsonite crystal is sitting in a group of perfect microcline crystals.

Very good contrast.

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

Microcline

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Triclinic - Pinacoidal
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Arendal, Aust-Agder, Norway