Abstract macro photograph of a Dugway geode; from the Dugway Geode beds of Utah Image #2384 4757 X 3141 pixels
Macrophotograph of a cluster of peridot crystals from Arizona. Most peridot is approx. 90% forsterite which is a form of olivine with a high magnesium content. Image #4112 6063 X 3930 pixels
Closeup photograph of a Dugway geode whose cavity is lined with quartz crystals; Dugway Geode Beds, Utah Image #4119 4080 X 5904 pixels
