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Show RICH SILVER-GOLD MP !H WTfti Philipsburg Quadrangle Has Produced a Great Amount ".of Wealth. A production of ovor $32,000,000 in gold and silver, from which nearly $15,000,000 has been paid in dividends, is the record of two mines located in the Philipsburg quadrangle, Montana, and the total nunc production of the quadrangle is provisionally , estimated at $-15,000,000 to $50,000,0"00. Tho Philipsburg quadranglo is a 30-minuto 30-minuto area which joins tho south half .of the Helena 60-minuto quadrangle on the west. Irs eastern border is about a milo west of Anaconda, and its northern limit is just south of Stone Station on the Philipsburg and Drummond branch of the .Northern Pacific railway. Tho area is for the -most, part mountainous, with elevations eleva-tions ranging from 4600 to 10,600 feet. The central portion of the qundrangla is drained by Flint creek, which flows northeastward to the Missoula river. Relatively low hills on both sides of this creek furnish good pasturage for cattle, and iu the valley along tho stream are a number of hay ranches where the hardier grasses are cultivated. culti-vated. The spruco and pine which thickly cover the higher county-, although al-though providing sufficient timber for local needs, nro of too small size to be marketablo outside the area. A number of mining camps are located lo-cated within the district,' the most important being Philipsburg, Cable, Georgetown, Combination, Henderson and Flint, and some of these were among tho first in Montana to receive the serious attention of quartz prospectors. pros-pectors. Tbo valuable metals of the ores of this district arc silver, gold and copper. Some of the ores carr3 considerable con-siderable zinc, and lead, but at present these metals are not oconomicalPy important im-portant to. tho miner. Magnotic iron ore has been mined for flux, and sonic manganese oxide has been shipped for flux and to a less extent for its manganese man-ganese content. In tho summer and autumn of 190G, while geologic mappiug of the district, was being carried on uv Messrs. F. C. Calkins; and D. F. McDonald, of the United States Geological Survey, tho ore deposits wero made the subject of special study by Mr. W. H. Emmons. The report on tho Granite Bimetallic and Cable mines, which appears in the Surve3-'s "Contributions to Economic "Geology, 11)06" (bulletin No. 315). was propared by Mr. Emmons as the result ot that study. The Granite Mountain and Bimetallic Bimetal-lic mines are about 2lfc miles southeast of Philipsburg, on the steep western slope of Granito mountain, which rises 3000 feet above the valley of Flint creek. Although located on the same ore shoot and controlled from the first by nearly the same interests, the mines wero worked separately until 1S7S, when a consolidation was effected, since which, time I hoy have been operated op-erated as one. More "than half of the total mine production of the Philipsburg Philips-burg quadranglo is credited to the Granite mine. .Eight miles southeast of the Granito miue and thirteen miles northwest of the famous Anaconda district is the Cable mine, from which some remarkably remark-ably rich oro has been taken. So far as their larger structural features are concerned, the ore deposits of the two jnines are so unlike that thev can scarcely be compared. Of a list of 40 mineral varieties noted at the two mines, 25 per cent are peculiar to the Granite, 2n per cent arc peculiar to the Cable, and 500 per cent are common to both. Mr. Emmons discusses brieflj-the brieflj-the gcnoral character, distribution, and relations of the ore deposits and makes certain practical deductions of economic value. Prospectors, miners and others interested in the subject should apply to th.j Director, United States Goological Survey. Washington, P. C. for a copy of Bullotin No. 3.15. |