Krennerite crystal on quartz. Cresson Mine, Eclipse Gulch, Cripple Creek District, Teller County, Colorado. Field of view is about 5 mm. (Photo courtesy Brent Thorne; unauthorized reproduction is prohibited.)

Formula: (Au,Ag)Te2 Orthorhombic


Krennerite is a rare mineral found in hydrothermal deposits.

TAYLOR COUNTY: Krennerite is found as small grains intergrown with pyrite, chalcopyrite calaverite, petzite and other minerals in the hypogene ore at the Bend Deposit, NW sec. 2 T.32N. R.2E. NE of Gilman (DeMatties and Rowell, 1991).