San Miguel prospect, Moctezuma, Moctezuma Municipality, Sonora, Mexico

Green crystals of Mackayite. Picture width is 1,8mm.

© Elmar Lackner 2009

A group of crystals on matrix. Photographed by Karl Volkman. In the Collection of Donald Volkman.

© Karl Volkman 03/06

Green, tabular crystal of torbernite with black tourmaline group and unknown coating. Former Gary Mattausch collection. Rolf Luetcke specimen and photo.

Green, tabular crystals of torbernite with unknown coating over tourmaline group. Former Gary Mattausch collection. Rolf Luetcke specimen and photo.

Green, tabular crystals of torbernite with unknown coating over tourmaline group. Former Gary Mattausch collection. Rolf Luetcke specimen and photo.