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Uvite On Magnesite

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CR883162

Uvite On Magnesite

Classic Locality

Description Tabs

Description
Locality: 
Brumado, Bahia, Brazil
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5.5 × 2.5 cm
Description

This is a fantastic specimen of deep redbrown Uvite crystals on good contrasting white magnesite crystals up 2 cm across.

Beautiful old specimen from Armin Wendland collection

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