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Opal-AN On Calcite

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PJM180616

Opal-AN On Calcite

Description Tabs

Description
Locality: 
Lake Cooper Quarry, Corop, Campaspe Shire, Victoria, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 4 × 1.5 cm
Description

Glass clear, colourless botyroidal masses of hyalite, opal An on crude calcite crystals over a green actinolite  matrix

Mineral Data
What's on the rock

Opal-AN

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
Earthstones Australia

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All goods must be paid for prior to shipping, all bids are binding.