48 reactions | Bornite, the Peacock Ore, is an important copper ore in Arizona's copper mining industry. The chemical composition is rich in copper (Cu) Cu5FeS4. 35-second video filmed 6/7/2020. | Arizona Geological Survey at the University of Arizona | Facebook

Heavy rains loads washes on east side of Tucson. This 20-second video shows the Tanque Verde Wash at Houghton Rd in east Tucson at 7:30 a.m. on 1/31/2015. The wash is wall-to-wall with water, probably about 2,000 cubic feet per second. At the height of the flood at midnight on 30 January, flow was approximately 5,500 cubic feet per second (CFS). For comparison, the Colorado River near Yuma rarely runs as high as 5,000 cfs. | Arizona Geological Survey at the University of Arizona

1.1K views · 80 reactions | Basalt with ultramafic xenoliths. The olive-green dunite probably reflects crystal fractionation from a magma chamber at the crust-mantle boundary (40 km below Earth surface). The xenoliths were transported by basalt magma to the Earth's surface. This specimen probably stems from the San Carlos volcanic field of eastern Arizona. | Arizona Geological Survey at the University of Arizona | Facebook

Arizona Mining News - Junior Mining Network

Recent rains have produced flow in the Tanque Verde Wash in eastern-most Tucson. 38-second video captured in the early afternoon of 10 Feb. 2024 | Arizona Geological Survey at the University of Arizona

Este Wash in east Tucson after just 30 minutes of torrential rains. #flood #monsoon | Arizona Geological Survey at the University of Arizona