The book The Examination of Prospects; a Mining Geology was written by author Charles Godfrey Gunther Here you can read free online of The Examination of Prospects; a Mining Geology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Examination of Prospects; a Mining Geology a good or bad book?
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The main slate band is 200 ft. In thickness, and the several veins carry ore where they pass through it, but are elsewhere unpayable. AT ASPEN, COLORADO, 2 the mineralizing solutions appear to have risen through the underlying siliceous formations (granite and quartzite) w^ith but little precipitation of ores, and through the overlying dolomitic and calcareous formations with much pre- cipitation, and finally, upon encountering the overlying shales and the prophyry sheet that was intruded at th...eir base, the solutions were impounded, and the shales reacted powerfully with the solutions for the production of large deposits. AT BALLARAT, AUSTRALIA, 3 the prevailing country rocks are 1 J. H. Curie, "Gold Mines of the World, " p. 188. 2 J. E. Spurr, Economic Geology, IV, p. 310. 2 T. A. Rickard, Trans. , A. I. M. E. , XXX, p. 1010. 142 EXAMINATION OF PROSPECTS slates and sandstones that carry as intercalated members a series of black slate bands, which contain carbonaceous matter and pyrite.
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