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Sinkankasite

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SMM546864

Sinkankasite

Rare Mineral

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: 
1.5 × 1.3 × 1 cm
Description

Small but wonderful specimen of this rare mineral that is found in only three locations, this, comes from the type locality which provided the best samples. With clearly visible crystals on three sides and on two sides are diverging fan, and as you can see from the photos on the one hand the group of crystals, acicular, colorless, intricate, is visible to the naked eye. Very nice.

Boxed with Label
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

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