Bournonite on Siderite

Item Description

Matrix specimens of Bournonite from this mine are not common, the majority of the crystals end up getting blown off the host rock in the blast due to poor mining techniques. This sharp bladed crystal managed to stay on its matrix of modified Siderite rhombohedra and minor Pyrite. The Bournonite has super luster with small truncated faces along the edge. A pretty miniature specimen and aesthetic to boot. The largest Bournonite measures 1.6 cm. There was a find of this relatively rare lead copper antimony sulfosalt about 6 years ago at Machacamarca, and this piece is one of the better quality pieces found, and one of the VERY few matrix pieces of finer quality.