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Alunite On Quartz

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PJM40309

Alunite On Quartz

Description Tabs

Description
Locality: 
Iron Monarch Open Cut, Iron Knob, Middleback Range, Eyre Peninsula, South Australia, Australia
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 2.6 × 2.4 cm
Description

Sharp yellow alunite crystals richly covered quartz crystals studded with small hematite crystals. The alunite grades in some areas on the specimen to an opaque olive colored crystals

Mineral Data
What's on the rock

Alunite

Formula: 
KAl3(SO4)2(OH)6
Strunz: 
7.BC.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Allumiere Quarries, Tolfa, Rome Province, Latium, Italy

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Earthstones Australia

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