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Uvite On Magnesite

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DVE98568

Uvite On Magnesite

Ex-David J. Eicher Collection

Description Tabs

Description
Locality: 
Serra das Éguas, Brumado, Bahia, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.2 × 1.8 cm
Description

A cluster of deep cranberry-red crystals of the rare tourmaline group mineral uvite on white magnesite matrix. Good crystal forms and a nice display it makes.

Mineral Data
What's on the rock

Uvite

Formula: 
Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)
Group Parent: 
Tourmaline
Crystal System: 
Trigonal
Hardness: 
7.5
Colour: 
Black, greenish-black
Streak: 
Light-brown, light-green, or white

Magnesite

Formula: 
MgCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White
Type Locality: 
Magnisía Prefecture (Magnesia), Thessalia Department (Thessaly), Greece
David J. Eicher

Seller Information

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