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Topaz With Albite

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PDM1163706

Description Tabs

Description
Locality: 
Little Three Mine, Ramona, San Diego County, California, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.4 × 1.1 cm
Description

Pale blue, lustrous, perfectly byterminated crystal of topaz on a crystallized feldspar matrix, likely albite. It is quite gemmy, some erosions at the edge. It comes from the Little Three mine, a classic Californian locality. The fourth and last we had, from the collection of Marleen Bos, who acquired it at the Tucson show around 1985-87.

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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

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

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