Copper in/on Calcite with Epidote | Quincy Mine, Hancock, Houghton Co., Michigan, USA | 45x40x30mm | No. 2634
Prehnite on Epidote, Kayes Region, Mali, West Africa. 47x35x25mm.
Green crystals of Epidote associated with altered Cambrian “Murchison Granite” (red granite is visible in the first image). These were discovered in 1991 during hydro tunnelling work on the Anthony Headrace Tunnel near Tullah on...