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Gormanite

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PDM823723

Gormanite

Type Locality

Description Tabs

Description
Locality: 
Big Fish River, Yukon, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1 × 0.8 cm
Description

Blueish green sparkling sprays of acicular gormanite crystals partially covered by gemmy rhombohedral siderites. Some sharp blue lazulites complete the paragenesis. Representative example of this rare phosphate and from the type locality.

Acquired in 1984, it is from the collection of Georges Vanacker*.

*Vanackerite from Tsumeb was named after him.

Mineral Data
What's on the rock

Gormanite

Formula: 
(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6·2H2O
Strunz: 
8.DC.45
Hardness: 
4.0 - 5.0
Type Locality: 
Rapid Creek, Dawson Mining District, Yukon Territory, Canada

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