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Feldspar Group & Muscovite

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MGR829806

Feldspar Group & Muscovite

Description Tabs

Description
Locality: 
Sapo Mine, Goiabeira, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.7 × 7.3 × 5.5 cm
Description

This is an out-standing rarity from a small old discovery several years ago. The feldspat-main crystal shows a very uncommon  and twinned habit, sharp terminations and a touch of rose color. It is completly exposed and shows wonderful contrast to tiny dark, sparkling muscovite crystals. No significant damages to report.

Mineral Data
What's on the rock

Muscovite

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