File:Transactions (1871) (14770653484).jpg

Identifier: transactionsmining23amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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47.—Section on third level of Gnade Gottes Stehend vein,Freiberg. (Weissenbach, No. 22.) Fig. 48.—Section on thirteenth level of Adalbert Liegend vein,Przibram. a, galena and calcite ; 6 (or, more precisely, the irregu-lar mass shown to the right of b) zinc-blende; c, sandstone. (J.Zadrazil, No. 52.) Fig. 49.—Section on thirteenth level of Adalbert master-lode,Przibram. a, siderite; b, calcite; c, quartz; c/, galena; e, diorite.(J. Zadrazil, No. 5.) Fig. 50.—Section on twenty-ninth level of Adalbert master-lode,Przibram. a, calcite; 6,silicified (vergttars/e) vein-matter; c, quartz; d, diorite. (J. Zadrazil, No. 21.) Fig. 51.—Section on adit of Hildebrand vein, Joachimsthal. a,mica-slate; b, dolomite; c, c, proustite; d, dolomite with pyrite; e, uraninite. (J. Nemecek, No. 11.) Fig. 52.—Section on tenth level of Janghauerzechen vein, Joa-chimsthal. a, a, dolomite and calcite; b, b, mica-schist; c, basalt-wacke; d, chalcopyrite; e,. proustite. (J» Nemecek, No. 5») Fig. 48
Text Appearing After Image:
358 THE GENESIS OF ORE-DEPOSITS. Description of Figures, Fig. 53.—Specimen from the Drei Prinzen Spat vein, in theeighth level of the Churprinz Friedrich August mine, Freiberg,Saxony; ^ nat. size; a, quartz with disseminated galena and blende,indistinctly crustified—from the older vein; b, fluorite with quartz;c, barite in thin crusts; d, gray earthy mass of the later vein, verydistinctly crustified; e, the latest fault-fissure. Fig. 54.—Cop))er-deposit at Prettau in Tyrol. Sketch of the roofof the Ottilie level. Fig. 55.—Ditto; side of the same level. Fig. 56.—Ditto; vertical section in the plane of the pitch, whichdescends nearly westward, the course of the strata being E. to W.,and the dip steep to South. Adits and levels : a, Peter; b, Jacob; c,Marx; d, Johann; e, Kristof; /, Nikolaus; g, Ignatz. The threelevels below g are the Ottilie, Karl, and Hugo. Fig. 57.—Ditto; horizontal projection, showing approximatelythe position of the ore-bodies on the different levels: a

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