Download or read book Wall Rock Geochemistry of the Chester Vein Sunshine Mine Kellogg Idaho written by Nicholas Howard Tibbs and published by . This book was released on 1972 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Chester vein has been the major source of ore from the Sunshine mine, largest single producer of silver in the world. 425 samples of quartzite and argillite wall rocks were collected in 13 traverses across this vein on the 4400, 4600, and 4800 mining levels. These samples were analyzed for aluminum, magnesium, calcium, sodium, potassium, manganese, iron, lead, copper, and zinc by atomic absorption spectroscopy, and for silicon and sulfur by x-ray emission spectroscopy. Element distribution plots, linear correlation coefficient matrices, varimax factor analysis, and cluster analysis were employed to determine the geochemical processes that occurred in the wall rock. Examination of element distributions established that large scale leaching of calcium occurred concurrently with a stage of bleaching in the wall rock. Subsequent to this bleaching process, carbonatization (sideritization) of the wall rock, which occurred during siderite emplacement in the vein, resulted in aureoles of iron, manganese, magnesium, and calcium in the wall rock near the vein. These aureoles were shown to increase the exploration target by a factor of about 10. An inverse relationship was statistically established between sericite, represented by aluminum and potassium, and siderite, represented by iron and manganese, in the wall rock. The cause of this relationship was not determinable. It is recommended that a mineralogical study supercede this study to resolve this problem. The technique of cluster analysis was modified in order to permit meaningful geochemical interpretations. The modified technique provided the same results as factor analysis, but offered the advantage of an easily understood graphical representation of results"--Abstract, leaf ii.

Download or read book Information Circular written by and published by . This book was released on with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Circular Idaho Bureau of Mines and Geology written by Idaho Bureau of Mines and Geology and published by . This book was released on 1979 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Graduate Theses on the Geology of Idaho 1900 1977 written by and published by . This book was released on 1979 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multivariate Analysis Techniques with Application in Mining written by Paul C. McWilliams and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts of Theses written by and published by . This book was released on 1971 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Circular written by and published by . This book was released on 1979 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertations and Theses about Idaho 1900 1978 written by Douglas G. Birdsall and published by . This book was released on 1980 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertations and Theses about Idaho 1900 1988 written by Leonard Hitchcock and published by . This book was released on 1990 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1974 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1973 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book United States Geology written by University Microfilms International and published by . This book was released on 1980 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multivariate Analysis Techniques with Application in Mining written by Paul C. McWilliams and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Fluid Inclusion and Structural Analysis of the West Chance Vein System Sunshine Mine Kellogg Idaho written by David Scott Boyer and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sunshine mine, near Kellogg ID, is a mesothermal Ag-Pb vein deposit in the Coeur d'Alene mining district. Proterozoic siliciclastic rocks of the Ravalli Group, Belt Supergroup, host the ore bodies. The recently discovered West Chance ore body has been under development for the past five years. This tabular ore body strikes west and dips steeply to the south, has 300m (~1000 ft) strike length and extends approximately 914m (~3000 ft) down dip. Ore is located where the WNW-striking Chance fault changes to a predominately west-striking structure. This study consists of a fluid inclusion and structural analysis of the West Chance ore body to determine pressure, temperature, and composition parameters of mineralization, and to evaluate possible structural controls on ore deposition. Fluid inclusion analysis of over 60 primary inclusions from quartz veins within the West Chance ore body show the dominant type of fluid inclusion to be liquid-rich inclusions composed of H2O-NaCl. Homogenization temperatures, T(h), range from 190.6°C to 325.8°C, with a mean value of 270.9°C. There is no systematic variation of T(h) with respect to depth and no evidence of boiling. Salinities increase with depth through the vein system; thus range from 0.5 wt.% NaCl in the upper portions to 12.2 wt.% NaCl lower in the ore body. Increasing salinity with depth suggests that ore deposition in the West Chance is a result of mixing of two fluids of similar temperature but varying salinities or that boiling occurred higher in the system yielding the observed salinity contrast. A constructed P-V-T diagram suggests that the West Chance ore body formed at pressures in the range of 0.5-2 kbars, corresponding to depths of 1.75-7 km for fluid pressure under lithostatic load. Structural analysis consisted of mapping, petrofabric analysis, and compilation of existing data and showed that the mineralized fault system consists of an anastomosing series of smaller faults that strike WSW to WNW. Megascopic features and petrographic textures indicate that the fault has been reactivated over time. Ore shoots plunge steeply to the west with a 60-70° rake. Previous work on structural control of ore fluids has suggested mineralization took place during left-lateral or reverse motion. The present study of the West Chance ore body shows there is evidence for both types of motion and supports left-lateral, reverse, and right-lateral as a sequence of fault motions, with right lateral motion occurring after ore deposition. However, there are no constraints on the absolute timing of faulting.

Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1972 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Glacial World According to Wally written by Wallace S. Broecker and published by . This book was released on 1995 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: