The Geology Of Mission Copper Mine Pima Mining District Arizona PDF Download
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Author | : R. E. Gale |
Publisher | : |
Total Pages | : 162 |
Release | : 1977 |
Genre | : Geology |
ISBN | : |
Download The Geology of Mission Copper Mine, Pima Mining District, Arizona Book in PDF, ePub and Kindle
Author | : Robert Earle Gale |
Publisher | : |
Total Pages | : 368 |
Release | : 1965 |
Genre | : Copper mines and mining |
ISBN | : |
Download The Geology of Mission Copper Mine, Pima Mining District, Arizona Book in PDF, ePub and Kindle
Author | : Dean W. Lynch |
Publisher | : |
Total Pages | : 140 |
Release | : 1967 |
Genre | : Copper ores |
ISBN | : |
Download The Geology of the Esperanza Mine and Vicinity, Pima County, Arizona Book in PDF, ePub and Kindle
Author | : R. E. Thurmond |
Publisher | : |
Total Pages | : 28 |
Release | : 1958 |
Genre | : Copper mines and mining |
ISBN | : |
Download Discovery and Development of the Pima Copper Deposit, Pima Mining Co., Pima County, Ariz Book in PDF, ePub and Kindle
Author | : Robert Linn Williamson (Jr.) |
Publisher | : |
Total Pages | : 146 |
Release | : 1993 |
Genre | : Geology |
ISBN | : |
Download The Geology of the Mineral Hill Area, Mission Mine, Pima County, Arizona Book in PDF, ePub and Kindle
The Mission Mine, 32 kilometers southwest of Tucson, Arizona, is developed on a porphyry copper skarn with ore hosted in the Permian Epitaph, Scherrer, and Concha Formations and the Triassic Rodolfo Formation. The western portion of the orebody, the Mineral Hill area, has distinct geologic and structural differences from the Mission pit sequence. Cross-sections constructed from recent drill hole data revealed that three major faults are responsible for the differing geology and stratigraphy. Two of these cause carbonate rocks whose formation identity was previously unknown to be emplaced in the project area. Geochemical analysis of known carbonate formations and of the unknown carbonates was used to attempt classification of the unknowns by determining normative mineral compositions, and by using neural networks, a computer algorithm previously successful in classifying complex patterns. The normative mineral compositions were too similar to be useful, but neural networks were moderately successful in correctly classifying unknowns whose formation name could be deduced by stratigraphic means. Sections of the Cambrian Abrigo, Devonian Martin, and Permian Rainvalley Formations, previously unrecognized at Mission, were identified by neural network and stratigraphic data.
Author | : Lyman C. Huff |
Publisher | : |
Total Pages | : 50 |
Release | : 1970 |
Genre | : Copper |
ISBN | : |
Download A Geochemical Study of Alluvium-covered Copper Deposits in Pima County, Arizona Book in PDF, ePub and Kindle
Author | : Joseph B. Cummings |
Publisher | : |
Total Pages | : 48 |
Release | : 1950 |
Genre | : Copper mines and mining |
ISBN | : |
Download Investigation of Twin Buttes Copper Mines, Pima County, Ariz Book in PDF, ePub and Kindle
The Twin Buttes camp embraces eight mines in the Pima mining district. The first mining claims in the camp are said to have been located in 1876, but little mining was done until 1905. Intermittent operation of five of the mi.nes to 1928 yielded 388,231 tons of ore averaging 6.19 percent copper and 8 small tonnage of high-grade oxidized zinc ore. While the Bureau was investigating the area, one mine was active, and it started to produce in 1944. The mines of the Twin Buttes camp are at or near contacts of intrusive granite with Paleozoic limestones and quartzite. The ore shoots lie in metamorphosed sediments adjacent to a zone of garnet rock that separates the ore from the footwall granite. Small fissures that originate at the contact and cut the sedimentaries appear to have been controlling factors in ore deposition. No important ore bodies are exposed at the surface, and those developed wore discovered by sinking on the fissure veins to the contact zone. Most of the area overlying the favorable ore zone is covered by alluvium ranging in thickness from 5 to more than 20 feet. Investigation of the area by the Bureau started in August 1942 and terminated in January 1943, when it became necessary to divert personnel and funds to other work. It consisted of mapping, test pitting, trenching, and sampling. Later, a geophysical survey, consisting of natural-potential measurements and a few resistivity measurements, was made in the mapped area.
Author | : Mark Miller |
Publisher | : |
Total Pages | : 44 |
Release | : 1997 |
Genre | : Copper mines and mining |
ISBN | : |
Download Geology of the Oracle Ridge Mine and Mining District, Pima County, AZ Book in PDF, ePub and Kindle
Author | : Frederick Leslie Ransome |
Publisher | : |
Total Pages | : 246 |
Release | : 1903 |
Genre | : Copper mines and mining |
ISBN | : |
Download Geology of the Globe Copper District, Arizona Book in PDF, ePub and Kindle
Author | : Saville Cyrus Creasey |
Publisher | : |
Total Pages | : 40 |
Release | : 1955 |
Genre | : Copper ores |
ISBN | : |
Download Copper Deposits of Part of Helvetia Mining District, Pima County, Arizona Book in PDF, ePub and Kindle