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Topaz With Smoky Quartz Feldspar & Mica

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PCZ658228

Topaz With Smoky Quartz Feldspar & Mica

Description Tabs

Description
Locality: 
Diamond Rocks, Mourne Mountains, County Down, Northern Ireland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6.5 × 6 cm
Description

A granite pegmatic matrix with transparent, colourless topaz in association with smoky quartz, sharp white feldspar crystals and well formed mica books. From a famous but not often offered Northern Irish locality. 

(L)

Mineral Data
What's on the rock

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

Feldspar

Group Parent: 
Feldspar Group

Mica

Group Parent: 
Mica Group
Peter Crozier Minerals