Cyanotrichite, Malachite
Small Cabinet, 8.4 x 5.9 x 6.0 cm
Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Can
Cyanotrichite is an uncommon hydrated copper aluminum sulfate hydroxide found in the oxidation zone of copper ore bodies. This rich and very colorful specimen has tiny, acicular, radiating, vivid powder-blue cyanotrichite needles lining sculptural vugs in starkly contrasting, banded green malachite matrix. This fine, old piece is from the Grand View Mine of Arizona, which is in the Grand Canyon National Park and you cannot collect from there today. The last production from this mine was in 1916. Ex. Jaime Bird Collection.