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Perhamite & Wavellite

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Perhamite & Wavellite

Description Tabs

Description
Locality: 
Silver Coin Mine, Valmy, Humboldt County, Nevada, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1 × 1.4 cm
Description

Pearl white tiny perhamite crystals with colourless wavellite and minor zinclipscombite

Mineral Data
What's on the rock

Perhamite

Formula: 
Ca3Al7.7Si3P4O23.5(OH)14.1·8H2O
Strunz: 
8.DO.20
Hardness: 
5.0
Streak: 
white
Type Locality: 
Dunton Gem Quarry, Newry, Oxford Co., Maine, USA

Wavellite

Formula: 
Al3(PO4)2(OH,F)3·5H2O
Strunz: 
8.DC.50
Hardness: 
3.5 - 4.0
Streak: 
White.
Type Locality: 
High Down Quarry, Filleigh, North Devon, Devon, England, UK