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Feldspar On Schorl

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DVD831996

Feldspar On Schorl

Description Tabs

Description
Locality: 
North Whitetail Basin Granite Quarry, Boulder Mountains, Jefferson County, Montana, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 2 cm
Largest Crystal: 
1.50cm
Description

Feldspar  on a couple of schorl crystals from a pegmatite between Boulder and Whitehall, Montana. Crystals are contacted in a few places but do not stand out.

Mineral Data
What's on the rock

Feldspar

Group Parent: 
Feldspar Group

Schorl

Formula: 
Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.0

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