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Sinkankasite & Hureaulite

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BCK511108

Sinkankasite & Hureaulite

Steve and Janet Cares collection
Type Locality

Description Tabs

Description
Locality: 
Barker-Ferguson Mine, Keystone, Pennington County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.1 × 0.8 cm
Description

You are bidding on a small specimen with a vug hosting a pink group of hureaulite along with a fantastic spray of sharp bladed sinkankasite crystals. It is rare to have sinkankasite show such sharp terminations. The specimen was collected by Steve and Janet Cares in 1980. 

Mineral Data
What's on the rock

Sinkankasite

Formula: 
Mn2+Al(PO3OH)2(OH)·6H2O
Strunz: 
8.DB.20
Hardness: 
4.0
Type Locality: 
Barker-Ferguson Mine, Keystone, Keystone District, Pennington Co., South Dakota, USA

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

Seller Information

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