A curious specimen comprised of a magnesite cluster sandwiched between two twinned dolomites. The largest dolomite is 4.5cm. The dolomites have a tan (best seen in the one photo, outer layer giving way to nearly water clear windows. Both the magnesites and the dolomites have coatings of some reddish and black material. An unusual piece to say the least! Locality: Brumado, Bahia, Brazil Composition: magnesium carbonate and calcium magnesium carbonate
