A popular guide to minerals : with chapters on the Bement Collection of minerals in the American Museum of Natural History, and the development of mineralogy . COLUMBITE Haddam, PHLOGOPITE S, Burgess, Ontario, CanadaBement Collection, American Museum of Natural History BEMENT COLLECTION 2-7 Schemnitz, Hungary, shows the association of sphalerite,drusy quartz encrusting barite, amethysts on calcite, while fromFelsobanya comes a singular group of white crystals sprouting froma flat hollow blade, illustrating the rapid and eccentric power ofcrystallization in this inexhaustible species. Th
A popular guide to minerals : with chapters on the Bement Collection of minerals in the American Museum of Natural History, and the development of mineralogy . COLUMBITE Haddam, PHLOGOPITE S, Burgess, Ontario, CanadaBement Collection, American Museum of Natural History BEMENT COLLECTION 2-7 Schemnitz, Hungary, shows the association of sphalerite,drusy quartz encrusting barite, amethysts on calcite, while fromFelsobanya comes a singular group of white crystals sprouting froma flat hollow blade, illustrating the rapid and eccentric power ofcrystallization in this inexhaustible species. There are some su-perb examples from Auvergne, France, many from Dauphiny, aseries of English quartzes, many of great interest, and many ofhigh cabinet beauty. There is an interesting clear crystal on apartially developed prismatic pediment, with oblique, striated, wavyand undercut faces, from Carlow, Ireland. The amethysts fromHungary, the crystals from Brazil, many of them singular, withbasal plane, with zonal coloring, and many peculiarities; with a longseries from Guanajuato, Mexico, characterized by delicacy of col-oring ! The Thunder Bay amethysts, the flattened blades from
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmineral, bookyear1912
