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Andesine Ilmenite & Augite

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PJM38721

Andesine Ilmenite & Augite

Description Tabs

Description
Locality: 
Portland Harbour Trust Quarry, Cape Sir William Grant, Portland, Glenelg Shire, Victoria, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
3.6 × 8.7 × 7.2 cm
Largest Crystal: 
3.50cm
Description

The Portland Harbour Trust Quarry has produced some the worlds finest andesine crystals and this specimen with bladed crystals of andesine to 3.5 cm must be up there with some of the finest.

Mineral Data
What's on the rock

Andesine

Variety Of: 

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Formula: 
(Na,Ca)[Al(Si,Al)Si2O8]
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White

Ilmenite

Formula: 
Fe2+TiO3
Strunz: 
4.CB.05
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
5.0 - 6.0
Type Locality: 
Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Earthstones Australia

Seller Information

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