Tetrahedrite (Group) coated by Chalcopyrite and with Quartz and Galena - Herodsfoot Mine, England / United Kingdom - 8 x 12 x 10 cm / main crystal: 2.1 cm.

Mineral: Tetrahedrite (Group) coated by Chalcopyrite and with Quartz and Galena
Locality: Herodsfoot Mine, Lanreath, Liskeard, Cornwall, England / United Kingdom
Dimensions: 8 x 12 x 10 cm / main crystal: 2.1 cm.

Description: Mass: 1000 g MIM number:1875 Group of modified tetrahedra encrusted with golden chalcopyrite on quartz and galena Photographer: AINU / Augustin de Valence Ex collection Philadelphia Academy of Natural Sciences (USA)