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Articles 1 - 30 of 43
Full-Text Articles in Metallurgy
Czarina Mine, Butte, Montana, Prodyot K. Das
Czarina Mine, Butte, Montana, Prodyot K. Das
Bachelors Theses and Reports, 1928 - 1970
The Czarina mine operated for a short time during the last Great War, lies in the southwestern corner of the Butte mining district of Montana. This area was worked during the extensive silver mining in Butte during the 1890's, and was prospected from time to time in later years. The orebody of the mine consists of fissure fillings of manganese mineral oxidized to a certain depth, in a fracture zone of the Boulder Batholith.
Mineralization Of The Bonanza Mine, H. M. Callaway
Mineralization Of The Bonanza Mine, H. M. Callaway
Bachelors Theses and Reports, 1928 - 1970
The Bonanza mine of the Emery mining district in Powell County is on the largest veins in the area, and is developed to a depth of 680 feet by an incline shaft following the dip of the structure. Sulfide ores carrying gold and silver values are mined throughout the area which is easily accessible by road from Deerlodge, Montana, ten miles west of the district.
Fauna And Stratigraphy Of The Meagher Formation At Three Localities In Southwestern Montana, William J. Van Matre
Fauna And Stratigraphy Of The Meagher Formation At Three Localities In Southwestern Montana, William J. Van Matre
Bachelors Theses and Reports, 1928 - 1970
In the past 75 years, the scenic area about the headwaters of the great Missouri River has attracted the attention of many leading stratigraphers and paleontologists; for in this area bountiful outcrops of Paleozoic fossil horizons are available for study and correlation.
A Study Of The Divide-Dewey Contact Of The Boulder Batholith, Francis M. Young
A Study Of The Divide-Dewey Contact Of The Boulder Batholith, Francis M. Young
Bachelors Theses and Reports, 1928 - 1970
The batholith is dated as Paleocene or early Eocene. The rocks of the batholith in this area are classified as ranging from quartz-granodiorite to granodiorite. Variation in mineral content causes a chance in color tone from light to dark gray. swarms of inclusions occur in the igneous rock near the contact.
Montana Talc; Problems In Physical Properties, E. C. Armstrong
Montana Talc; Problems In Physical Properties, E. C. Armstrong
Bachelors Theses and Reports, 1928 - 1970
General information on talc, including foreign and United States occurrences, origin, and uses is covered. Montana deposits are discussed in greater detail as to location, geology, mineralogy, and mining. Studies of talc by petrographic and x-ray methods and an experiment to determine the porosity are described and discussed.
Importance Of Unconformities To Oil Occurrence In Montana, Robert E. Evenson
Importance Of Unconformities To Oil Occurrence In Montana, Robert E. Evenson
Bachelors Theses and Reports, 1928 - 1970
Although the majority of geologic structures in Montana have been tested in the search for petroleum, only a few have been found to contain commercial quantities of either oil or gas, and with each successive dry hole, producers are becoming more and more wary of investing capital in new wells located on structural features alone. It is apparent that if new oil and gas fields are to be found in Montana, exploration must be done on the basis of something other than structure, or combined with structure.
Fauna Of The Pilgrim Formation Of The South Boulder Creek Area In Southwestern Montana, John T. Eastlick
Fauna Of The Pilgrim Formation Of The South Boulder Creek Area In Southwestern Montana, John T. Eastlick
Bachelors Theses and Reports, 1928 - 1970
This paper, a study of the fauna of the Pilgrim formation at South Boulder Creek in southwestern Montana, represents a laboratory study of the fossil specimens collected by Dr. Alvin Hanson during the summer of 1949. The scope of investigation includes identification and classification of the faunas, their stratigraphic relationship and zonal subdivisions.
Foraminifera From The Colorado Shale Near Sunburst, Montana, Frank R. Reynolds
Foraminifera From The Colorado Shale Near Sunburst, Montana, Frank R. Reynolds
Bachelors Theses and Reports, 1928 - 1970
One of the many secrets which planet Earth has jealously kept from its inhabitants is the microscopic fossil form known as the foraminifer. It hides in common shale, awaiting the patient and painstaking searcher. In furthering the study of the foraminifera of the Colorado group of formations in Northern Montana, the United States Geological Survey has collected several suites of shale samples from the Sunburst Dome, five to ten miles south of the Canadian border and twenty-five miles north of the city of Shelby, Montana.
A Study Of The Effect Of The Maximum Melt Temperatures Upon The Degree Of Supercooling Of Gallium, Wilfred E. Nagel
A Study Of The Effect Of The Maximum Melt Temperatures Upon The Degree Of Supercooling Of Gallium, Wilfred E. Nagel
Bachelors Theses and Reports, 1928 - 1970
If, in a system at a given temperature, there should occur a decrease in free energy and this decrease does not take place, then the resulting condition of the system is termed supercooling. A common example of the phenomenon is found in the liquid-to-solid transition of many substances, when the temperature of the liquid may be lowered below its freezing point without solidification. Similar phenomenon occurs in the gas-to- liquid, gas-to-solid, and polymorphic transformations.
Mottling In The Meagher Limestone, Ronald J. White
Mottling In The Meagher Limestone, Ronald J. White
Bachelors Theses and Reports, 1928 - 1970
The middle Cambrian Meagher limestone of southwest Montana is characterized by mottled members that are finely crystalline in the tan part and microcrystalline in the dark matrix. As seen in the literature, similar mottled limestones are thought to be an arrested stage in the dolomitization, or alteration of limestones.
Foraminifera Of The Colorado Shale At Fort Benton, Montana, Robert E. Willson
Foraminifera Of The Colorado Shale At Fort Benton, Montana, Robert E. Willson
Bachelors Theses and Reports, 1928 - 1970
Shale is known to be a source-bed for oil, and the Colorado shale which is over 2000 feet thick in places may well be the source for the oil which is now accumulated in the included or closely associated sandstones. A thorough study of the fossil content may not only be helpful in correlation of Cretaceous sediments, but it likewise may be the starting point for studies -which could eventually lead to the discovery of unknown mineral deposits.
A Mineral Dressing Study Of The Benefication Of Philipsburg Manganese Carbonate Ore, Frank M. Antonioli
A Mineral Dressing Study Of The Benefication Of Philipsburg Manganese Carbonate Ore, Frank M. Antonioli
Bachelors Theses and Reports, 1928 - 1970
The beneficiation of rhodochrosite ore to the extent that it is suitable for nodulizing and subsequent use in the steel industry is intriguing. Such ores from certain mines is relatively easy to beneficiate, but the rhodo-chrosite ore from several deposits of the Philipsburg district has never been successfully up-graded by any of the several known beneficiating methods.
The Isothermal Transformation Curve For S.A.E. 6150, Charles Arentzen
The Isothermal Transformation Curve For S.A.E. 6150, Charles Arentzen
Bachelors Theses and Reports, 1928 - 1970
More than 3000 years ago, men began quenching and tempering tools to improve their physical properties. The ancient people found that iron was easier to shape and form in a heated condition. Charcoal was used as the fuel, and when the shaping process was completed, the smiths cooled the piece in the most obvious way, quenching in water. Quite unintentionally, these people stumbled on the process for improving the properties of iron, and the art of blacksmithing began.
Physiographic Surfaces And Weathering Near Butte, Gordon B. Brox
Physiographic Surfaces And Weathering Near Butte, Gordon B. Brox
Bachelors Theses and Reports, 1928 - 1970
Three cycles of erosion have modified the Boulder batholith. The earliest cycle produced a peneplaination that has been largely obliterated by a partially completed intermediate cycle, and the recent cycle now in progress.
An Investigation Of The Gallium-Indium Binary System, Allen D. Kennedy
An Investigation Of The Gallium-Indium Binary System, Allen D. Kennedy
Bachelors Theses and Reports, 1928 - 1970
Twenty-four alloys, at 5 weight per cent or smaller intervals, were investigated by the thermal method. Very low temperatures had to be attained, because most of the alloy melts supercooled remarkably. Analysis showed only a liquidus and solidus line, and the solidus temperature was the same for each alloy.
The Alloys Of Gallium And Indium, C. J. Adams
The Alloys Of Gallium And Indium, C. J. Adams
Bachelors Theses and Reports, 1928 - 1970
Thermal analysis VIPS used to construct cooling and heating curves from which the phase diagram was determined. The data for the entire set of cooling curves were obtained by the use of mercury thermometers.
Hot-Dip Aluminizing Of Low-Carbon Steels, Claude R. Barnes Jr.
Hot-Dip Aluminizing Of Low-Carbon Steels, Claude R. Barnes Jr.
Bachelors Theses and Reports, 1928 - 1970
In a relatively short period of sixty-five years, aluminum has grown to the rank of fifth in total weight of metals produced in the world. Throughout its short life, aluminum has been found to have excellent corrosion-resistant properties; yet only in recent years has aluminum been under consideration as a corrosion-resistant coating for iron and steel.
The Electrolytic Polishing Of Steel In Solutions Of Sulphuric And Phosphoric Acids, Joseph W. Tripp
The Electrolytic Polishing Of Steel In Solutions Of Sulphuric And Phosphoric Acids, Joseph W. Tripp
Bachelors Theses and Reports, 1928 - 1970
The process of cleaning and pickling the surfaces of steel objects by electrolytic methods has been known and applied since about 1920; the fact that under certain conditions these surfaces acquired a brilliant luster was noted as early as 1928.
An Isothermal Study Of An S.A.E. 6150 Steel, Tom Liss, C. Arentzen
An Isothermal Study Of An S.A.E. 6150 Steel, Tom Liss, C. Arentzen
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis is to set forth the method followed, the laboratory procedure practiced, the results obtained, the conclusions drawn, and the recommendations proposed as a consequence of a metallographic study of the isothermal transformation of an S.A.E. 6150 steel.
Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas
Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas
Bachelors Theses and Reports, 1928 - 1970
Since the purpose of this thesis is primarily to present an improved mechanical method for plotting isothermal transformations by means of differential magnetic permeability between untransformed austenite and its ultimate transformation product.
A Study Of Some Pre-Cambrian Schists From Yankee Jim Canyon, Park County, Montana, Charles K. Presley
A Study Of Some Pre-Cambrian Schists From Yankee Jim Canyon, Park County, Montana, Charles K. Presley
Bachelors Theses and Reports, 1928 - 1970
One of the most highly deformed metamorphic rock series in Montana is exposed fifteen miles north of Yellowstone Park, Wyoming in the great gorge known as Yankee Jim Canyon, which was formed by Yellowstone River at that point. These metamorphics are Pre-Cambrian in age, and are almost certainly sedimentary in origin, although the involved and intricate folding which they have undergone has long since obliterated any superficial traces of that origin.
The Lilly Mine Of Powell County, Montana, Wilbur Aikin
The Lilly Mine Of Powell County, Montana, Wilbur Aikin
Bachelors Theses and Reports, 1928 - 1970
For many years the Elliston District, of Powell County has been a minor producer of gold, lead, zinc, and silver. Although never among the largest producing districts of the state, it has with the exception of the war years supplied a notable tonnage of ore to the neighboring mills ever since the first placer and lode claims were located there during the late eighteen hundreds.
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
Bachelors Theses and Reports, 1928 - 1970
The objective of this thesis was to affect an efficient and economical recovery of corundum. The corundum occurs as a crude ore admixed with quartz and other diluents. Yet, this material is a potential Montana resource of a valuable non-metallic mineral. In view of the strategic importance and the relatively small production of this mineral in the United States, it seems advisable at this time in world affairs to investigate every possible source of this mineral.
The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement
The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement
Bachelors Theses and Reports, 1928 - 1970
Unique feldspar porphyries, syenitic in appearance, and granitic in composition, form an unusually thick sill intruding pre-Cambrian Belt graywacke about eight miles south of Whitehall in southwestern Montana. Commercial deposits of gold and silver ores occur nearby, and may possibly be genetically related to the porphyry, although direct association is not evident. The geologic age is believed to be late Cretaceous or early Tertiary, and the sill may be related to the Tobacco Root batholith.
The Bighorn Mountains, The Little Rocky Mountains And The Bowdoin Dome Uplifts, E. J. O'Connell
The Bighorn Mountains, The Little Rocky Mountains And The Bowdoin Dome Uplifts, E. J. O'Connell
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to secure an actual figure describing the amount of uplift in the Bighorn Mountains, the Little Rocky Mountains and the Bowdoin Dome. To the writer’s knowledge, the amount of uplift in the areas mentioned has not been determined before. Such a figure could be useful in structural studies of Montana and Wyoming, because the amount of uplift is a fair measure of the intensity of orogenic forces; also, the amount of uplift is a prerequisite to the determination of the amount of erosion.
Geology Of Smoke Hollow Area 8 Miles Southeast Of Deerlodge, Powell County, Montana, Floyd C. Bossard
Geology Of Smoke Hollow Area 8 Miles Southeast Of Deerlodge, Powell County, Montana, Floyd C. Bossard
Bachelors Theses and Reports, 1928 - 1970
This investigation was undertaken primarily as a problem in geologic mapping. The stratigraphy was studied as to the character, age, and sequence of the geologic formations that are exposed. The conclusions were based principally on the field relationships and lithology because no fossils were found.
Structure Of Southwestern Montana, Donald W. Levandowski
Structure Of Southwestern Montana, Donald W. Levandowski
Bachelors Theses and Reports, 1928 - 1970
Intrusions of granitic rocks on a large scale are commonly found in the central part of folded mountain systems. Igneous rocks, intrusive and extrusive, are widespread in the mountains of southwestern Montana. An examination of the structural pattern of this area indicates that the fold trends form a radial pattern. How and why this pattern formed and its relation to the igneous activity in the area have not yet been discussed in the literature.
Basic Sills In Cottonwoood Creek Canyon, Jefferson County, Montana, Dale F. Kittel
Basic Sills In Cottonwoood Creek Canyon, Jefferson County, Montana, Dale F. Kittel
Bachelors Theses and Reports, 1928 - 1970
A stratigraphic section of about 2600 feet of upper Beltian to lower Devonian formations exposed in Cottonwood Creek Canyon 11 miles east of Whitehall, Montana, contains about 20 igneous sills. These sills are from 5 to 20 feet thick, and grade from granogabbro to quartz basalt, except for one sill which is 165 feet thick, and is composed of granogabbro and red syenite. The whole sedimentary series is isoclinally folded, and the sills follow the bedding planes closely with localized crosscutting through the beds.
Was Assimilation Important In The Formation Of The Boulder Batholith?, Richard Marvin
Was Assimilation Important In The Formation Of The Boulder Batholith?, Richard Marvin
Bachelors Theses and Reports, 1928 - 1970
Examination of a rock suite from the northern end of the Boulder batholith reveals that four of the eight criteria for assimilation as given by Grout are present. Thus, in the opinion of the writer, there is evidence and trends to signify assimilation, but no indication of the importance that it played in the formation of the Boulder batholith.
An Investigation Into The Precipitation Of Copper From Mine Water By Cupric Copper Reduction, And The Subsequent Precipitation Of Copper As Cuprous Chloride, Jack T. Gentry
Bachelors Theses and Reports, 1928 - 1970
The objective of this thesis is to determine the possibility of applying a different method to the recovery of the copper dissolved in the Butte mine waters, and thereby precipitate a purer cement copper with greater efficiency and less iron consumption.