OttawaRocks:
Pyrite crystals from the Tucson mine near Leadville, Colorado
OttawaRocks:
Silver shelf
OttawaRocks:
Amazing Galena pseudomorph after pyromorphite, Germany
OttawaRocks:
Green River formation fossil fish
OttawaRocks:
Rhodochrosite, Silverton, Colorado
OttawaRocks:
Rhodochrosite and quartz, Silverton, Colorado
OttawaRocks:
rhodochrosite from the Sweet Home Mine
OttawaRocks:
Sweet Home Rhodochrosite (7)