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 . have been carefully chosen, and many of thespecimens possess an almost artificial form, as though natural piecesof jewelry. The specimens of especial interest are those fromKongsberg and the Michigan area. Those from Kongsberg showcubes, composite and built up of smaller ones, octahedrons, andtetra-hexahedrons, and octahedral twins. A pseudomorph afterProustite is of great value. This is from Pribram, Bohemia,Amongst the treasures is a
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 . have been carefully chosen, and many of thespecimens possess an almost artificial form, as though natural piecesof jewelry. The specimens of especial interest are those fromKongsberg and the Michigan area. Those from Kongsberg showcubes, composite and built up of smaller ones, octahedrons, andtetra-hexahedrons, and octahedral twins. A pseudomorph afterProustite is of great value. This is from Pribram, Bohemia,Amongst the treasures is a cube, octahedron, and rhombic-dodeca-hedron from Bergraadorten, Norway. The Mexican silvers arestriking, but the Michigan examples will elicit most are exquisite minute reticulations of cubes on slate, branch-ing rosettes in calcite, massive silver, in copper, with edges of con-tact, irregular and sinuous, elongated octahedrons with surfaces ap-parently crystallized and extended by secondary enlargements, ar-row pointed elongations, and confluent groups forming thickenedplates with epidote and calcite, crystallizations in broad dendritic. NATROLITE Bergen Hill, N. J. Bement Collection, American Museum of Natural History
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmineral, bookyear1912
