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Topaz

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SMM669196

Topaz

Description Tabs

Description
Locality: 
Conca Cannas Quarry, Masullas, Oristano Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.8 × 1.5 cm
Description

Many, divergent groups of acicular, colorless, crystals of topaz. On the sample there are also many tabular black crystals of hematite. Nice.

Boxed with Label
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

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