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Graftonite

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SHS87754

Graftonite

Description Tabs

Description
Locality: 
Ross Mine, Berne, Custer County, South Dakota, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 0.3 cm
Description

Nice piece of graftonite shist

Mineral Data
What's on the rock

Graftonite

Formula: 
(Fe2+,Mn2+,Ca)3(PO4)2
Strunz: 
8.AB.20
Hardness: 
5.0
Type Locality: 
Melvin Mountain, Grafton, Grafton Co., New Hampshire, USA