This chrysocolla with malachite is from the Star of the Congo Mine, Lubumbashi, Katanga Copper Cresent, Katanga, Zaire. This mine is abandoned but is still worked by the local population for the recovery of mineral specimens. Malachite is a carbonate containing the elements Cu, C, O and H. It is a secondary mineral found in weathered copper ore deposits. Chrysocolla is a secondary silicate containing the elements Cu, Al, H, Si and O. It is commonly found in association with malachite This specimen consists of a quartz matrix that covered with multiple generations of chrysocolla and druse malachite crystals. The chrysocolla has a robins egg to turquoise blue in color. The malachite has a sugar-like glistening luster. There is also minor tenorite on the piece.This piece measures 3 x 2/12 x 2 inches or 76 x 64 x 50 mm.