Mineral: Gold on Quartz
Locality: Mockingbird Mine, Colorado area, Whitlock District, Mother Lode Belt, Mariposa County, California, USA
Dimensions: 8,5 x 6,0 x 6,5 cm
Description: Main crystal size: 2,5 cm
Large hoppered crystals --elongated, brilliant and sharp-edged-- some quartz crystals are more coarsely formed. Analysis showed the following composition: 88% Au, 12%Ag
MIM number 793
Photographer: Augustin de Valence (Aïnu)
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