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Bobdownsite & Hydroxylapatite

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BCK506372

Bobdownsite & Hydroxylapatite

Type Locality

Description Tabs

Description
Locality: 
Tip Top Mine, Fourmile, Custer County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1 × 0.7 cm
Description

You are bidding on small specimen with some really nice singles and groups of tan bobdownsite crystals with beautiful sprays of hydroxylapatite needles on a seam in quartz. 

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

Hydroxylapatite

Formula: 
Ca5(PO4)3(OH)
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White

Seller Information

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