Description
THIRTEEN AMERICAN MINERALS Including a calcite with purple fluorite, Cave-in-Rock, Illinois, measuring 4 1/2 x 4 x 3 in ; a fluorescent Willemite with calcite, New Jersey ; a caledonite, Reward Mine, Inyo County, California ; an oxypluboromeite with segnitite, Lowman Mine, Nevada ; a chalcopyrite, Tri-State ; a bertrandite,...