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Sinkankasite

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CAM156982

Sinkankasite

Ex Grenier, ex Tom Loomis collection
Type Locality

Description Tabs

Description
Locality: 
Barker-Ferguson Mine, Keystone, Pennington County, South Dakota, United States of America
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5 × 3 cm
Description

The rare manganese-aluminium-phosphate sinkankasite was named in 1982 after John Sinkankas (1915-2002). This excellent specimen has several areas with colourless prismatic and acicular crystals and sprays of sinkankasite on the matrix.
Ex Grenier and Tom Loomis collection.

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
Cartils Minerals

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