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Magnesite & Uvite

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SKY522767

Magnesite & Uvite

Classic Locality

Description Tabs

Description
Locality: 
Serra das Éguas, Brumado, Bahia, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 2 × 1.5 cm
Description

Exceptional colorless magnesite crystals associated to gemmy orange uvite crystals in an outstanding thumbnail for both species. Magnesite is also the matrix of the specimen. Good contrast with the matrix.

Mineral Data
What's on the rock

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

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

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