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Topaz & Hyalite

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TPX736017

Topaz & Hyalite

Rare Mineral

Description Tabs

Description
Locality: 
Tepetate, Villa de Arriaga Municipality, San Luis Potosi, Mexico
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 4 cm
Weight: 
148.00gr
Description

Very nice group of topaz crystals and opal var. hyalite on matrix from this classic Mexican site.

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

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

Seller Information

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