Thick, wavy sheets and masses of Copper. Specimen is almost entirely Copper with a bit of rock matrix mixed with Copper at the base.

Heavy nugget-like specimen of Copper from Bisbee. Appears to be nearly solid Copper with areas that have retained their bright Copper coloration.

Sculptural cluster of crystallized Copper with tall branches of Copper rising up from the base. Highly aesthtic spcimen from a locality that rarely produces attractive Coppers.

Mass of solid crystals from the Bingham Copper Mine. This mine is the largest man-made excavation in the world and is considered to have produced more copper than any other mine in history – more than 19 million tons. One of the largest and highest-grade porphyry orebodies in the world, the mine still produces about 1% of the world's copper. Despite the huge prduction, Copper specimens from this mine are uncommon.

Thumbnail sized specimen with large, very well formed crystals of Copper.

Beautiful, slightly skeletal crystal of Copper. Complete all around and undamaged with a slightly irridescent surface.

Multiple somewhat flat sheets of Copper crystals that grew in fractures around the now mostly gone matrix, leaving a sculptural mass of good crystals.

Thick, heavy formation of solid Copper with a minor amount of attached Calcite. Comes with an old British Museum of Natural History label.

Branching, dendritic Copper crystals that cover both sides of the rock matrix and rise up plant-like above the rock.

Large, heavy specimen of solid Copper with laminar growth features. The fibrous-looking nature of the copper is probably due to replacement by copper of fibrous-like white barite that is locally abundant at the mine. Small amounts of Silver iare present intergrown with the Copper.