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Milarite & Clinochlore On Adularia

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SHS584752

Milarite & Clinochlore On Adularia

Description Tabs

Description
Locality: 
Gastein Valley, St Johann im Pongau District, Salzburg, Austria
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.8 × 1 cm
Description

Nice milarite with clinochlore on adularia

Mineral Data
What's on the rock

Milarite

Formula: 
K2Ca4Al2Be4Si24O60·H2O
Strunz: 
9.CM.05
Hardness: 
6.0
Type Locality: 
Giuv Valley, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden), Switzerland

Clinochlore

Formula: 
(Mg,Fe2+)5Al(AlSi3O10)(OH)8
Strunz: 
9.EC.55
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Type Locality: 
Brinton's Quarry, West Chester, Westtown Township, Chester Co., Pennsylvania, USA...

Adularia

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