- Thumbnail, 2.7 x 2.2 x 1.4 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
An EXCELLENT and SHOWY thumbnail of bright, botryoidal, powder-blue chalcoalumite richly covering contrasting gossan matrix on this fine piece from the famous Grandview Mine of Arizona, which is actually in the Grand Canyon National Park and you cannot collect from today. Chalcoalumite is a RARE copper sulfate and this is a good one from the Carl Davis Collection.