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Quartz & Actinolite Inclusions

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PDM811986

Quartz & Actinolite Inclusions

Description Tabs

Description
Locality: 
Selåsvann, Vegårshei, Agder, Norway
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.5 × 1.3 cm
Description

Floater group of quartz crystals included by green acicular actinolite. Very rare Norwegian locality specimen.

Collected by J.Sibtsen in 1975-77. Ex Jan Sibtsen #1336.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Actinolite

Formula: 
☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Crystal System: 
Monoclinic - Prismatic
Hardness: 
5.0 - 6.0
Streak: 
White

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