Dolomite with Uvite from the Pomba Pit in Serra das Eguas


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This dolomite with uvite tourmaline is from the Pomba Pit in Serra das Egus, Brumado, Bahia, Brazil. This mine is a commercial producer of magnesite and talc however uvite and other accessory minerals, including emeralds are found there. The mine owners enforce a ban on mineral collecting that includes the miners that work there. Uvite is in the Tourmaline Group of minerals and it is a silicate that contains the elements Na, Mg, Al, Si, O, B and H. Dolomite is a carbonate and includes the elements Ca, Mg, C and O. This specimen consists of a formation of shield-like tabular dolomite crystals that host green uvite tourmalines. It measures 20 x 17 x 10 mm.

Additional information

Weight4 oz

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