Calcite
King David Mine, San Francisco Mining District, San Francisco Mountains, Beaver Co., Utah, USA
Calcite crystal showing multiple generations. Almost 3.5cm long. The outer layer is made of many small crystals, many exhibit a metallic gold iridescence, which is hard to capture in the picture.
Rick Dalrymple Specimen & Adrienne McElwain Photo.
© Rockpick Legend Co. & Rick Dalrymple