Home > Laskowski Ⅱ – June 29 > MS1846 Cornwallite found 2000

Cornwallite found 2000

Cornwallite is a hydrous copper arsenate. Zippe (1847) named the species after Cornwall, England, source of the original mineral.

Cornwallite forms a discontinuous green crust on altered volcanic rock; the largest patch is 3.2 × 2.1 cm. At magnification the mineral appears pseudomorphous. Could it be a replacement of azurite? Or clinoclase? Rich for the locality. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona. Laskowski self-collected this specimen August 18-19, 2000.

Price: $45

Item code: MS1846

For ordering, please use the order form.