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Gormanite

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MGR727145

Gormanite

Description Tabs

Description
Locality: 
Linópolis, Divino das Laranjeiras, Doce Valley, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.1 × 3.8 × 4.2 cm
Description

Exceptional crystals of gormanite in an isolated group, from a rare one-time find perhaps 20 years ago in Linopolis. These are seldom seen on the market today and so most folks think the best comes from Canada - but to my eye, these crystals from Brazil will always be better. Please note that this specimen represents an extra-ordinary rarity; gormanite was only found in 4 countries world-wide and this material from Brazil is probably the best ever found.

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