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Opal Var Hyalite On Siderite

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PJM201330

Opal Var Hyalite On Siderite

Description Tabs

Description
Locality: 
Boulder Beach, Highcliff, Otago, South Island, New Zealand
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 3 cm
Description

 Transparent, colourless botyroidal opal An variety hyalite in mounds over spherical siderite and limonite. Collected by Alan Bains in the early 1990's from Boulder Beach on the Otago Peninsular

Mineral Data
What's on the rock

Opal

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White
Earthstones Australia

Seller Information

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Seller's terms and conditions

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