Description
SEVENTEEN AMERICAN MINERALS Including a well-formed large cabinet specimen of calcite with chalcopyrite and dolomite, Sweetwater, Missouri, measuring 6 x 4 1/2 x 1 1/2 in ; a purple cubic fluorite on sphalerite, measuring 3 x 2 x 1 1/2 in ; a Colemanite, Boron, California ; and a quartz...