Gold on Quartz - Mockingbird Mine, USA - 8,5 x 6,0 x 6,5 cm
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)