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Uvite & Magnesite

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MBM1165936

Description Tabs

Description
Locality: 
Brumado, Bahia, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.5 cm
Description

Little oldtimer-beauty of Uvite up to 3mm associated with Magnesite from Brumado, Bahia in Brazil.

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