Polished De Grussa copper ore slab CO114 outback jasper A one-of-a-kind

A one-of-a-kind

Dimensions at widest points approximately 200 mm x 85 mm x 7 mm thick

Sometimes it exhibits striking contrasting veins of magnesite

BJ135 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

The environment they grew in was most probably a sandy tidal flat or braided river channel

Polished De Grussa copper ore slab CO114 outback jasper A one-of-a-kindCO114 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 300 mm x 160 mm x 14 mm thick. Weighs: 1,205 grams A mix of copper minerals that formed in the upper oxidised zone. Consisting of dark green malachite, bright blue chrysocolla, native copper, tenorite, minor cuprite and brown iron oxides. All running through brecciated white quartz ! The Degrussa underground mine is a high grade copper deposit in Western