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Faulted veinlets of chalcocite and quartz pyrite ore; Mountain View mine, 600 foot level, south crosscut, north vein, east vein. Jefferson County, Montana. Circa 1900. Plate 16-B in U.S. Geological Survey. Professional paper 74. 1912.
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Fault breccia, Mountain View mine, shows cross slips and ore boulders in north crosscut eleventh level; breccia 45 inches wide. Jefferson County, Montana. Circa 1900. Plate 17-A in U.S. Geological Survey. Professional paper 74. 1912.
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Sheeted granite north of Meaderville, along Great Northern railway, showing weathering along joint planes, some of which are mineralized and form veins. Jefferson County, Montana. Circa 1900. Plate 5-A in U.S. Geological Survey. Professional paper 74. 1912.
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Sheeted granite of boulder batholith near Homestake tunnel. Jefferson County, Montana. Circa 1900. Plate 2-B in U.S. Geological Survey. Professional paper 74. 1912.
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General view of western part of Butte district, including the Butte. Jefferson County, Montana. Circa 1900. Plate 2-A in U.S. Geological Survey. Professional paper 74. 1912.
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Disintegration boulders, in place, surrounded by soft sandy disintegrated granite, shows manner of formation of the boulders and their relation to sheeting planes of the granite. Railway cut at west portal of Homestake tunnel, east of Butte, on Northern Pacific railway. Jefferson County, Montana. Circa 1900. Plate 5-B in U.S. Geological Survey. Professional paper 74. 1912.
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Decomposition boulders formed by vein making agencies in granite; north crosscut, 800 foot level, Gagnon mine. Jefferson County, Montana. Circa 1900. Plate 6-A in U.S. Geological Survey. Professional paper 74. 1912.
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Two of the settling basins of Helena, Montana, water system, 7 miles southwest of the city. Jefferson County, Montana. n.d.
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Chessman Reservoir, 12 miles south of Helena, Montana, is the main water supply source for the city. Red Mountain in background. Jefferson County, Montana. n.d.
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Mineralization along joints in granite, Rarus mine, south crosscut, seventh level. Incipient vein formation, veinlets of quarts and pyrite. Jefferson County, Montana. Circa 1900. Plate in U.S. Geological Survey. Professional paper 74. 1912.
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The upper Hale Reservoir, near head of Lump Gulch, 12 miles southwest of Helena, Montana, from mountain slope 1/2 to 3/4 mile north of reservoir. Jefferson County, Montana. n.d.
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Mineralized joints in granite in an excavation for the foundation of a church a Butte. Jefferson County, Montana. Circa 1900. Plate 4-A in U.S. Geological Survey. Professional paper 74. 1912.


    map background search result map search result map The upper Hale Reservoir. Jefferson County, Montana. No date. Chessman Reservoir. Jefferson County, Montana. No date. WMR 010 - BuIwer Mine. Jefferson County, Montana. 1943. WMR 095 - Shamrock Mine. Jefferson County, Montana. 1943. WMR 099 - Shamrock Copper. Jefferson County, Montana. 1943. WMR 113 - Basin Gulch Placer Mine. Jefferson County, Montana. 1943. WMR 265 - Copper Nugget Placer. Jefferson County, Montana. 1944. WMR 356 - Basin Gulch Placer Mine. Jefferson County, Montana. 1945. The upper Hale Reservoir. Jefferson County, Montana. No date. Chessman Reservoir. Jefferson County, Montana. No date. WMR 010 - BuIwer Mine. Jefferson County, Montana. 1943. WMR 095 - Shamrock Mine. Jefferson County, Montana. 1943. WMR 099 - Shamrock Copper. Jefferson County, Montana. 1943. WMR 113 - Basin Gulch Placer Mine. Jefferson County, Montana. 1943. WMR 265 - Copper Nugget Placer. Jefferson County, Montana. 1944. WMR 356 - Basin Gulch Placer Mine. Jefferson County, Montana. 1945.