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Graftonite

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PJM133928

Graftonite

Description Tabs

Description
Locality: 
Ross Mine, Berne, Custer County, South Dakota, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.2 × 2.7 cm
Description

Crystalline mass of reddish brown graftonite, an uncommon primary phosphate from granitic pegmatites, this specimen was collected from the Ross Mine in the Highland Lode.

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
Earthstones Australia

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