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Aegirine-augite & Oligoclase

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CLB507731

Aegirine-augite & Oligoclase

ex collection Dantmann
Classic Locality

Description Tabs

Description
Locality: 
Kragerø, Vestfold og Telemark, Norway
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11.3 × 8.5 × 7 cm
Description

A very interesting and attractive specimen with shiny black, partly bent bushels of acicular aegirine between blocky, dark green hedenbergite crystals and minor quartz. In addition some small pinkish na-feldspar crystals - most likely oligoclase.

Mineral Data
What's on the rock

Oligoclase

Variety Of: 

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Formula: 
(Na,Ca)[Al(Si,Al)Si2O8]
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Streak: 
White

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