Bournonite with Siderite, Machacamarca Mine, Potosi Department, Bolivia

Complete, undamaged bournonite crystal nicely perched on matrix. Surrounded by honey-brown siderite crystals and two other bournonites (one of the bournonites, on the reverse side, is damaged). A nice representative example of the species. Ex Mike Christofolakos. From: Machacamarca Mine, Machacamarca, Potosi Department, Bolivia. Dimensions: 4 cm x 5.5 cm (the largest bournonite crystal is 2.5 cm)