 | | Report (issue) | | and carbonatite in the Powderhorn district, Gunnison County, Colorado by D. C. Hedlund and J. C. Olson...spectrographic analysis of magnetite-perovskite rock.............. 9A. 9B. 27 Chemical, normative...and carbonatite in the Powderhorn district, Gunnison County, Colorado by D. C. Hedlund and J. C. Olson...one sample each of magnetite-perovskite-apatite rock and a quartz diabase dike. These data have been...geologic reports and maps published on the Powderhorn district, (see reference list) as well as work currently |  | | Report (volume) | | important were those in the Central City district, Colorado, from which about 300 tons of high-grade...Utah; the Schwartzwalder (Ralston Creek) and Los Ochos mines, Colorado; the Early Day and Buckhorn claims...deposits in the Dripping Spring quartzite, Gila County, Ariz. According to Nininger (1954, p. 43), as...areas in Saxony; the Beaverlodge district, Canada; the Cornwall district, England; the Guarda and adjacent...States except for some in the Central City district, Colorado were discovered since the mid-1940's. The |  | | Report (volume) | | Geophysical Union.. Transactions, American Institute of Mining and Metallurgical Engineers _..._ American Journal...Mines Special Reports _.......__ ________ Colorado Mining Association publications . Economic Geology...Geology. _ . _ ___... Engineering and Mining Journal _ , Geochimica et Cosmochimica Acta _ Bulletin, Geological...of Sedimentary Petrology_...__._ Mines Magazine Mining Engineering ........___..._...._____ Advances in...the areas and subjects are listed under States, "Colorado Plateau," "United States," or under a few subject |  | | Report (issue) | | · as a joint program of the Manhattan Engineer District and its successor, the U. S. Atomic Energy Commission...the Central City district and adjoining areas, Gilpin and Clear Creek Counties, ·Colorado, by Paul K. Sims...wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado, by...to pitchblende-bearing veins at Marysvale, Piute County, Utah, by George W. Walker and Frank W. Osterwald...of the Los Ochos uranium deposit, Saguache County, Colorado, by R. C. Derzay _·- _______ ____ __ __ _------------ |  | | Report (volume) | | Horn Mountains Wilderness Study Area, Maricopa County, Arizona OCT 77 U.S. GEOLOGICAL SURVEY BULLETIN...Horn Mountains Wilderness Study Area, Maricopa County, Arizona By FLOYD GRAY, R.J. MILLER, J.R. HASSEMER...WEST-CENTRAL ARIZONA AND PART OF SAN BERNARDINO COUNTY, CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD...Horn Mountains Wilderness Study Area, Maricopa County, Arizona. U.S. Geological Survey Bulletin 1701-A...Mountains Wilderness Study Area (AZ-020-099), Maricopa County, Arizona. CONTENTS Summary Al Abstract 1 Character |  | | Report (issue) | | published information, field investigations, and mining company data. 2 ABBREVIATIONS USED IN THIS REPORT...resources Mining districts Gibbonsville Mining District Indian Creek Mining District Mineral Hill Mining District...Mackinaw Mining District Blackbird Mining District Wilson Creek Mining District Yellowjacket Mining District...Range Mining District Eureka Mining District Carmen Creek Mining District Eldorado Mining District Pratt...Pratt Creek Mining District McDevitt Mining District Junction Mining District Texas Mining District Spring |  | | Report (issue) | | Milwaukee & St. Paul railways, from which the different mining camps are reached by wagon roads from 3 to 10 miles...Clinton for the mines of the Clinton district. Many of the mining camps may be reached also from Potomac...inhabited, and its chief industries in addition to mining are agriculture and lumbering. (See fig. 16.) FIELD...Felan and Tenmile creeks, a part of the Clinton district, and a few tracts elsewhere were examined by E... was made by the writer, who received from the mining men cheerful and unstinted responses to practically |  | | Report (issue) | | .................................. Ilistory of mining.................................................... ·.......................................... Mining and milling...................................... . . . . . . . . . . . . . . . . . . . . Pinal schist. . . . . . . . . . . . . . . . . . . . . . . ....~· CONTENTS. 5 Page. 0HAPTEH. IV.-Mines and mining ....................................................................................•• M.iarni district ............................................. |  | | Report (issue) | | gold at the Jewel and other mines in the Greenwood Mining Division (R. Bell , 1902-3: Geo l. Surv. Can ....Surv . Can ., Ann. Rept. , IX, 27A). At the Slocan mining camp , argentite is present as a primary min eral...near the headwaters of the Kitsault River , Skeena mining division (R. M. Thompson, 1953: Am. Mineralogist...sulphides and sulphates (R. W . Boyle, 1962: Can . Mining J ., vol. 83, No . 4 , p. 104). Ontario 31 M,...veins on the prop erty of t h e Premier Langmuir Mining Company in the Township of Langmuir a l ong the |  | | Journal (volume) | | groups of curious visitors, interested to see how rock have the yellow gold extracted therefrom, and how...Exposition.* G. Dodd, the superintendent of the mining departof the Union Iron Works, it will readily...mountain and Gopher Ridge, in Cala- ; veras county, Cal., lies Salt Spring val- Through this trough-like...various types, from a crystalline granular, dark green rock to one of light color and aphanitic texture. The...greatly varying size. The gold-bearing quartz of the district is associated with these dykes, usually constituting |  | | Report (issue) | | Reconnai ane of mineral ages of plutons in E lko County, ev ., and vicinity, by R. R. Coats, R. F . Marvin...of the almon Horn blende Schi t and Abrams Mica Schist, southern Klamath Mou n.tains, Calif., by M . A...hig nesis of tuff in the Ricardo Formation, K ern County, southern California, by R. A. Sheppard and A....rocks in the southern Caballo Mountain , Sierra County, N. Mex., by M . H . Staatz, J. W. Adam, an d ...ecting in the Browns Canyon fluor par district, Chaffee County, Colo., by R. E. Van Alstine _______ _ |
|
