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Rossmanite & Foitite

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BCK639042

Rossmanite & Foitite

Rare Mineral

Description Tabs

Description
Locality: 
Mount Mica, Paris, Oxford County, Maine, United States of America
Class: 
Single Crystal
Size Range: 
Micromount (under 1cm)
Size: 
0.5 × 0.3 × 0.2 cm
Description

You are bidding on a single tourmaline group crystal with a colorless base (rossmanite), green center (elbaite), and dark blue/violet tip (foitite). The crystal was probed by Jim Nizamoff. 

Mineral Data
What's on the rock

Rossmanite

Formula: 
☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White.
Type Locality: 
Rožná pegmatite (Rozna; Roschna), Žďár nad Sázavou, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic

Foitite

Formula: 
(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Strunz: 
9.CK.05
Crystal System: 
Trigonal
Hardness: 
7.0
Type Locality: 
California, USA

Seller Information

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