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 . iful exam-ples of the associated adularia albite and byssolite. The twinningof course is preeminent, and admirable types of the sphene habitare shown. 14204 is a handsome specimen; 14206, interesting;14209 unusually good; 14212 a wheel-shaped intersection, greenwith brown edges on calcite; 14220 coffee-tinted tips twinned on a,and upon a chlorite saturated quartz. A flattened crystal fromTauery, Austria, translucent-brown, is seen in 14
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 . iful exam-ples of the associated adularia albite and byssolite. The twinningof course is preeminent, and admirable types of the sphene habitare shown. 14204 is a handsome specimen; 14206, interesting;14209 unusually good; 14212 a wheel-shaped intersection, greenwith brown edges on calcite; 14220 coffee-tinted tips twinned on a,and upon a chlorite saturated quartz. A flattened crystal fromTauery, Austria, translucent-brown, is seen in 14231, a really beau-tifully modified crystal. Naturally the titanites from Renfrew , have been carefully selected, almost invariably with ref-erence to crystallographic interest; 14247,-243,-248,-250,-251,-252,-273, are admirable, and 14252 is well developed. Again the stand-ard rises in the Bement specimens, in those from Tilly Foster,Brewsters, N. Y., as in 14278, 14281. 14305 is a lederite from Nat-ural Bridge, Lewis Co., N. Y., associated with loxoclase. Thehuge wall-case specimens from Renfrew Co. are remarkable, oneof them a splendid BARITE Frizington, EnglandBement Collection, American Museum of Natural History
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmineral, bookyear1912
