. Annual Reports of the Department of the Interior for the Fiscal Year Ended June 30, 1900--Twenty-First Annual Report of the United States Geological Society. ORE DEPOSITS OF THE VERMILION DISTRICT VAN HisK.] VERMILION DISTRICT. 407 LIX, the jasper abuts against the greenstone, so that at the Chandler themain body of the deposit is below a jasper capping. The Chandlerore mass continues eastward and constitutes the Pioneer mine. Eastof the Pioneer, along this same belt of ore-bearing formation, are theZenith and Savoy mines; but at the present time we do not knowwhether or not development has
. Annual Reports of the Department of the Interior for the Fiscal Year Ended June 30, 1900--Twenty-First Annual Report of the United States Geological Society. ORE DEPOSITS OF THE VERMILION DISTRICT VAN HisK.] VERMILION DISTRICT. 407 LIX, the jasper abuts against the greenstone, so that at the Chandler themain body of the deposit is below a jasper capping. The Chandlerore mass continues eastward and constitutes the Pioneer mine. Eastof the Pioneer, along this same belt of ore-bearing formation, are theZenith and Savoy mines; but at the present time we do not knowwhether or not development has gone far enough to determine thepitch of these deposits and their relations to the deposits of thePioneer and Chandler. The ore of Soudan Hill, in the case of both the north and the southbodies, is apparently in pitching synclines. The impervious basementsare mainly the Ely greenstone. Associated with this greenstone arevarious intrusive rocks, among which are porphyry, and these mayhelp to form the basements. In some respects the Vermilion districtthus furnishes as good illustrations as are found in the Lake Superiorregion of ore deposits upon impervio
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1900, bookyear1901
