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Formula:   PbMoO4   Mineral Picture

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Crystal:   Tetragonal  
Hardness:   2.75-3.0  
Spec. Gr.:   6.5-7.0  
Streak:   White  
Cleavage:   Distinct Prismatic  
Location:   Curcurpe Municipio, Sonora, Mexico  

Wulfenite crystals of exceptional beauty are found at many localities worldwide. A few of the more notable are: Bleiberg, Austria; Touissit Mine, Oujda, Morocco; Red Cloud Mine, La Paz County, Arizona; Mammoth Mine, Pinal County, Arizona; Rum Jungle, Northern Territory, Australia; and the San Francisco Mine, near Cucurpa, Sonora, Mexico. The San Francisco mine was worked years ago as a silver mine; the deposit was recently managed by Edward Swoboda for three years. Thousands of bright orange crystal plates were discovered, many dotted with bright red mimetite balls. During this time the San Francisco mine was the world's only major producer of fine wulfenite crystals.

Bibliography: Mineralogical Record, V8, no. 1, pg. 58.

University of California, Santa Barbara—Department of Earth Science
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