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K Feldspar & Muscovite

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K Feldspar & Muscovite

Classic Locality

Description Tabs

Description
Locality: 
Lake Biwa, Shiga Prefecture, Honshu Island, Japan
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 5.7 × 4.2 cm
Description

Group of feldspar (k feldspar or microcline?) crystals with a very well defined main crystal and some muscovite.

Mineral Data
What's on the rock

K Feldspar

Synonym Of: 

Microcline

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0 - 6.5

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0

Sanidine

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Seller Information

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