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Svanbergite & Uvite

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CR153842

Svanbergite & Uvite

Rare Mineral

Description Tabs

Description
Locality: 
Pomba Pit, Serra das Éguas, Brumado, Bahia, Brazil
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 7.5 × 5.8 cm
Largest Crystal: 
0.60cm
Description

A very attractive specimen of large rhombohedral yellowish brown, very well defined, crystals of the very rare phosphate - svanbergite.

The crystals are very big for the species (up to 6 mm) and have excellent luster and color and are with beuatiful and lustrous, red Uvite crystals, on a matrix of rhombohedral crystals of Magnesite.

Fantastic specimen from Armin Wendland collection.

Mineral Data
What's on the rock

Svanbergite

Formula: 
SrAl3(PO4)(SO4)(OH)6
Strunz: 
8.BL.05
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
white
Type Locality: 
Hålsjöberg (Horrsjöberg), Torsby, Värmland, Sweden

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