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Bobdownsite & Gormanite

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WND583252

Bobdownsite & Gormanite

Rare Mineral

Description Tabs

Description
Locality: 
Big Fish River, Yukon, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.4 × 1 cm
Largest Crystal: 
1.00cm
Description

White and colourless, partially water-clear crystals of rare phosphate bobdownsite accompanied by rosettes of dark blueish-green bormanite. Some of the bobdownsite crystals are multifaced and sharp edged. A good specimen. Bobdownsite is named after Dr. Robert Down, university of Arizona.

Mineral Data
What's on the rock

Bobdownsite

Formula: 
Ca9Mg(PO4)6(PO3F)
Group Parent: 
Whitlockite Group
Strunz: 
8.AC.45
Hardness: 
5.0 - 0.0
Streak: 
White
Type Locality: 
Big Fish River, Dawson Mining District, Yukon Territory, Canada

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
Wendel Minerals

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