A cluster of awesome Cuprite Crystals. This specimen shows great octahedral crystal shape and in the sun or very bright torch the beautiful red colour is visible. A true collection piece is rare and hard to find great Cuprite specimens like this one. There is Copper and Silver Oxide in the crevices of the Cuprite. My photos don’t do this specimen justice and sorry about the blurry ones. This piece is from the private collection.
Rubtsovskoe Mine, Western Siberian Region, Russia.
3.9cm x 3.2cm x 2.6cm, 69g.
It is often associated with Native Copper, Malachite, Azurite, Limonite and Chalocite.
Of all the copper ores except for native copper, Cuprite gives the greatest yield of copper per molecule since there is only one oxygen atom to every two copper atoms. As a mineral specimen, Cuprite shows fine examples of well-developed cubic crystal forms. Cuprite’s dark crystals show internal reflections of the true deep red inside the almost black crystal. Other varieties, such as chalcotrichite, show tufts of needle-like crystals that have a beautiful red color and a special sparkle that make them popular display cabinet specimens.