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Gahnite & Muscovite

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TPX1059642

Gahnite & Muscovite

Rare Mineral

Description Tabs

Description
Locality: 
Santa Marina Mine, Mount Galiñeiro, Vincios, Pontevedra, Galicia, Spain
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.4 × 1 cm
Weight: 
7.00gr
Description

Very interesting group of gahnite crystals on a mica matrix from the Santa Marina quarry on Mount Galiñeiro. Today this quarry is flooded and there is no possibility of finding more specimens.
This piece was collected in the early 90s.

Mineral Data
What's on the rock

Gahnite

Formula: 
ZnAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0
Streak: 
Grey
Type Locality: 
Falun mine, Falun, Dalarna, Sweden

Muscovite

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

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