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Opal On Topaz

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SYA758912

Opal On Topaz

Fluorescent

Description Tabs

Description
Locality: 
Tepetate, Villa de Arriaga Municipality, San Luis Potosi, Mexico
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.2 × 2 cm
Description

A rounded aggregate of opal and quartz on a red-brown colored topaz crystal.

The opal shows a fluorescense under UV light.

Mineral Data
What's on the rock

Opal

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

Topaz

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

Seller Information

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