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Adularia & Calcite

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MGR643889

Adularia & Calcite

Description Tabs

Description
Locality: 
Teischnitz Valley, Kals Valley, Tyrol, Austria
Class: 
Crystals on Matrix
Size Range: 
Museum (18cm plus)
Size: 
19 × 14.4 × 8 cm
Description

The adularia crystals are sharp terminated and partly glossy! The dimension of the crystals is really outstanding - up to 83 mm across. They show more or less greenish layer, these faces are powdered with chlorite. The whole group is resting on blades of light beige calcite-discs. The assemble is very eye-catching and caused by the dimension much more impressive in person. Not completely undamaged, but overall in really fine condition, regarding size and locality. 

Mineral Data
What's on the rock

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White