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Topaz

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PJM74998

Topaz

Ex J & S Mommers Collection 243.04.06 NNEM

Description Tabs

Description
Locality: 
Mount Surprise, Etheridge Shire, Queensland, Australia
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 2.4 × 1.4 cm
Description

A very fine gem topaz crystal from Mount Surprise in Queensland, with the faintest hint of blue otherwise glass clear. Whilst this area has produced thousands of topaz specimens and is well known for its cutting rough, good complete crystals are very difficult to obtain

Acquired from G McDonald ( Melbourne ) in 1984

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
Earthstones Australia

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