 | | 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 (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 (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 |  | | 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) | | Reconnai ane of mineral ages of plutons in E lko County, ev ., and vicinity, by R. R. Coats, R. F . Marvin...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 _______ _...Lithium-bearin g bentonite d posit, Y a va pa i County, Ariz ., by J . J. m 156 163 IV CONTENTS |
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