Chrysocolla Mineral Specimen Orogrande Mining District Large - 12.5 lbs 11" x 7" x 4" Approx Beautiful large find - Recent - Contains other secondary minerals Chrysocolla is a blue-green hydrous copper silicate mineral that forms in the oxidation zones of copper deposits. It's known for its distinctive color, which is caused by copper ions, and its association with other secondary copper minerals. It's believed 'chrysocolla' was a term used to describe all bright green copper minerals, including malachite. He wrote, "Chrysokolla can be found in large quantities in gold mines and even more in copper mines." He also said it's present in "kyanos", which in Greek, means blue copper carbonate item 326