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 . re are American locali-ties. The Brookite follows from Switzerland, Wales, (these in su-perb translucent plates), Ellenville, N. Y. (one crystal modified,in quartz), Arkansas (many single, large, and fine crystals, withclean faces; three, Danas types and figured specimens, black pyra-mids with bifid summits. No. 5779 an unusual crystal; zirconoids—arkansite—on quartz, paramorphs in large stout prisms and pyra-mids, truncated and roughen
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 . re are American locali-ties. The Brookite follows from Switzerland, Wales, (these in su-perb translucent plates), Ellenville, N. Y. (one crystal modified,in quartz), Arkansas (many single, large, and fine crystals, withclean faces; three, Danas types and figured specimens, black pyra-mids with bifid summits. No. 5779 an unusual crystal; zirconoids—arkansite—on quartz, paramorphs in large stout prisms and pyra-mids, truncated and roughened summits with schillerized surfaces). Pyrolusite crystals from Giessen, Germany; after calcitefrom Ilmenau; also crystals in geode from Ilmenau; a remarkablepseudomorph after scalenohedral calcite from Ilfeld, Hartz; stoutcrystals from Mexico; Michigan specimens; with others follow. The Diaspora from Chester Co., Pennsylvania, as might beanticipated is fine. There are large light yellow and purple crystals,some types, and typical specimens from Chester, Mass., and a speci-men, of some age, formerly Dr. Leidys, from Franklin, N. C, withmany MONAZITE Amelia Court House, Va.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmineral, bookyear1912
