 | | Report (issue) | | GEOLOGY OF THE GEORGETOWN QlJADRANGLE (TOGETHER 'VITH THE EMPIRE DISTRICT) COLORADo· BY JOSIAH E. SPURR............... Topography and geography of the Georgetown quadrangle ...................................................._.......... . Distribution in Colorado ...................................................................... . Distribution in the Georgetown quadrangle ......................................... : ............ _.... 97 Gold belt near Georgetown.· .................. _. __ ........... , .. _ |  | | Report (issue) | | Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr...hornblende gneiss ____________ _ Quartzite at Coal Creek ________________ _ Igneous rocks _____________________________...Quartz diorite and associated hornblendite_ Boulder Creek granite _________________ _ Pikes Peak granite ...Pre-Cambrian deposits _________________________ _ Mine descriptions __________________________ _ 39 39 |  | | Report (issue) | | 1940-41 a gravitational survey was made in Nagpur District, India, in exploration for manganese ores which...magnetic profile above 40th parallel, eastern Colorado to western Indiana: Geophysics, vol. 14, no. 1...1948 to record a 925-mile profile between Adena, Colorado, and New Ross, Indiana. Ground positions were...the Gora Vysokaya deposits, in the Nizhniy Tagil district, U. S. S. R. Four other samples were prepared...Schwartz, G. M. Report on magnetic work in St. Louis County in 1942: Office of Commissioner of Iron Range Resources |  | | Journal (volume) | | going the rounds of the press to the effect that a mine of vanadate of lead has been found, and that $10...early, three masked tral Railroad, Erie, on the Colorado Cen- 40 miles from Denver, captured the engineer...tramway and sev- 1 The by lo wide feet in the clear. The ore factured here these single acting engines...north side of the San Joaquin river. Some of the mine owners are employing Chinese at un- derground work...oorrespondentB.— Eds. Besides handling their own mine product the Reduction Co. also work custom ore. |  | | Journal (volume) | | sufficient to store $60,000,000. THE Young America quartz mine of Sierra City has become a solid dividend payer...We note in the North San Juan Times, of Nevada county, that a hydraulic gravel elevator is soon to be...Gravel Mining Company, at North Bloomfield, Nevada county, this State. We have interviewed the manager of...Mammoth Bar, Placer county, and on the ground of the Miocene Mining Company, in Butte county, and upon the...in this State and Colorado, The North Bloomfield is the most extensive hydraulic mine in the world, and |
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