Dravite Tourmaline from the Pompa Pit, Serra das Egus,

$7.50

This tourmaline crystal, Variety dravite, is from The Pomba Pit in Sierra das Eguas, Bahia, Brazil. The crystal is thick opaque, black and has a vitreous luster. It is good on all sides and measures 1 1/16 x 5/8 x 11/16 inches or 27 x 16 x 18 mm.

1 in stock

Description

This dravite tourmaline is from the Pomba Pit in Serra das Egus, Brumado, Bahia, Brazil. This mine is a commercial producer of magnesite and talc however dravite and other accessory minerals, including emeralds are found there. The mine owners enforce a ban on mineral collecting and that includes the miners that work there. Dravite is in the Tourmaline Group of minerals and it is a silicate that contains the elements Na, Mg, Al, Si, O, B and H. These crystals are thick and opaque. They areĀ  dark brown to black in appearence and they have a greasy luster. The piece is good on all sides and it measure 1 1/16 x 5/8 x 11/16 inches or 27 x 16 x 18 mm.

Additional information

Weight4 oz

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