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Microcline Arfvedsonite & Smoky Quartz

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RHT761042

Microcline Arfvedsonite & Smoky Quartz

Description Tabs

Description
Locality: 
Hurricane Mountains, North Conway, Carroll County, New Hampshire, United States of America
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5 × 4.5 cm
Weight: 
203.00gr
Description

Dark gray smoky quartz between colorless, a bit greenish microcline crystals. In the matrix black arfvedsonite.

Mineral Data
What's on the rock

Microcline

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

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

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0