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| | Bournonite: Yaogangxian Mine, Chenzhou, Hunan Province, China.(Connoisseur's Choice) - HighBeam Encyclopedia (Site not responding. Last check: 2007-10-16) |
 | | It was an ore mineral in scattered Arizona locations, including the Helvetia-Rosemont district, Pima County; the Augusta and Hosey mines in the Wrightson district, Santa Cruz County; and the Boggs mine in the Big Bug district, Yavapai County, where it occurred both massive and in crystals with quartz, siderite, and other sulfides. |
 | | It occurred as silvery twinned crystals to 1 cm associated with tetrahedrite, arsenopyrite, and boulangerite at the large open-pit silver mine in the Candelaria district, Mineral County, and as excellent single and twinned crystals to 8 mm associated with andorite and enargite in quartz veins found at the Monitor mine, Taylor district, White Pine County. |
 | | Other Nevada localities include scattered mines in the Lewis and Reese River districts, Lander County; quartz-rhodochrosite veins in the Morey district, Nye County; the Antelope district, Pershing County; the Mount Hamilton area of the White Pine district, White Pine County, with seligmannite; and tentatively the Ophir mine of the Comstock district, Storey County. |
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