King David Mine, San Francisco Mining District, San Francisco Mountains, Beaver Co., Utah, USA

The vug of malachite crystals is 1cm across and 9cm wide overall. Collected off the dump in June 2011. Rick Dalrymple Specimen & Adrienne McElwain Photo.

© Rockpick Legend Co. & Rick Dalrymple

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

A calcite crystal 5cm long. Rick Dalrymple Collection & Adrienne McElwain Photo.

© Rockpick Legend Co. & Rick Dalrymple

UV Response - Long Wave