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A Study Of The Effects Of The Chloride Ion On The Lead-Silver Anodes And On The Lead Tenor Of The Zinc Deposit In Zinc Electrolysis, William A. Mitchell
A Study Of The Effects Of The Chloride Ion On The Lead-Silver Anodes And On The Lead Tenor Of The Zinc Deposit In Zinc Electrolysis, William A. Mitchell
Bachelors Theses and Reports, 1928 - 1970
The electrolyte used in the commercial production of electrolytic zinc from zinc sulphate solutions contains small amounts of impurities each of which has its own effects upon the process. Impurities such as antimony, cobalt, nickel, and iron tend to lower the current efficiency while other impurities such as chlorine, fluorine, and nitrates tend to increase the corrosion of the lead anodes and thereby increase the lead tenor of the zinc deposit.
The Elkhorn Mine Of Jefferson County, Montana, David D. Walker
The Elkhorn Mine Of Jefferson County, Montana, David D. Walker
Bachelors Theses and Reports, 1928 - 1970
In 1901, after yielding metals valued in excess of five million dollars, it was considered worked out. Since that time the mine has passed through the hands of several owners, none of whom have failed to realize a profit from it. Although at no time since its zenith did it ever regain its once great production, it did provide a livelihood for those who worked it. Now with the American Smelting and Refining Company interested in it, perhaps it will once again become an important producer.
Mineralogy Of The Silver King Mine Of Park City, Utah, Pierce D. Parker
Mineralogy Of The Silver King Mine Of Park City, Utah, Pierce D. Parker
Bachelors Theses and Reports, 1928 - 1970
Except for the early work of Boutwell and Irving, little has been published on the geology of the Park City mining district. For this reason and because of the availability of a selected suite of ores from the Silver King mine of this area, this writer chose the mineralogy of the Silver King mine as a senior thesis for the department of Geology of the Montana School of Mines.
A Study Of The Differential Seperation Of Galena And Sphalerite, Wilfred E. Nagel
A Study Of The Differential Seperation Of Galena And Sphalerite, Wilfred E. Nagel
Bachelors Theses and Reports, 1928 - 1970
The smelting of complex lead ores is a difficult operation, especially when they contain considerable amounts of iron and zinc. When these ores are smelted, all of the zinc, which is valuable and well worth recovering, goes into the slag. With the advent of the flotation processes, and the ability of these processes to concentrate the lead and zinc minerals into separate products, the smelting of complex lead ores was to a great extent simplified.
A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana
A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana
Bachelors Theses and Reports, 1928 - 1970
The factors that influence the choice of a method for treatment of an ore comprise the technical and economic limitations and advantages, derived in detail and balanced according to the exigencies of the particular situation.
Benefication Of An Oxidized Lead Ore From The Franklin Mine Lewis And Clark County, Jack D. Mclenegan
Benefication Of An Oxidized Lead Ore From The Franklin Mine Lewis And Clark County, Jack D. Mclenegan
Bachelors Theses and Reports, 1928 - 1970
This thesis is concerned with the beneficiation of an oxidized lead ore. Emphasis was placed upon concentration by flotation rather than by gravity methods, although some investigation was made with the Wilfley shaking table. The concentration of lead minerals received most consideration in the problem, but wherever possible attempts were made to increase the silver and gold concentration along with the lead.
Manganese Oxide Deposits Near Butte And Development Since 1942, Emmett M. Gilmore
Manganese Oxide Deposits Near Butte And Development Since 1942, Emmett M. Gilmore
Bachelors Theses and Reports, 1928 - 1970
The manganese minerals occur in the peripheral zone of the Butte district with quartz in veins, which at depth contain galena and sphalerite closely associated with silver-bearing minerals. The manganese oxides are all oxidation products formed by weathering of primary rhodochrosite or rhodonite.
A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
A Mineral Dressing Study Of The U.S. Grant Ore, John Emmett Murphy
Bachelors Theses and Reports, 1928 - 1970
This investigation concerns the development of a satisfactory method or extracting or concentrating gold and silver from the ores of the U. S. Grant Mine. The choice between applying an extractive process and one by which the valuable mineral constituents are concentrated depends on more than one factor.
Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken
Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken
Bachelors Theses and Reports, 1928 - 1970
The great diversity on mineral wealth in Idaho establishes it as one of the principle mining states in the union. Mining first began in the state with the discovery of placer gold in the Pierce City district in 1861, and since that date has become one of the leading industries of the state.
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Bachelors Theses and Reports, 1928 - 1970
The ore investigated in this thesis is a zinc-copper-lead ore. Microscopic analysis of this complex sulphide ore showed it to contain pyrite, sphalerite, arsenopyrite, galena, chalcopyrite, tetrahedrite, and covellite, with quartz as the gangue constituent.
Testing And Concentration Of A Low Grade Gold Ore From Marysville, Montana, John B. White, Jr.
Testing And Concentration Of A Low Grade Gold Ore From Marysville, Montana, John B. White, Jr.
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis was to investigate and attempt to concentrate low grade cyanided tailings rejected from the old Montana Mining and milling Company's mill situated 4 miles below the town of Marysville, Montana.
Some Investigations On Quantitative Measurement Of Amalgamation, Charles Moore
Some Investigations On Quantitative Measurement Of Amalgamation, Charles Moore
Bachelors Theses and Reports, 1928 - 1970
Amalgamation is a process in which precious metals are collected by mercury. The exact way in which the mercury holds the other metals is not positively known. It is probable that a series of intermetallic compounds form. Very little work has been done so far on the theory of amalgamation.
The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solutions, Phillip L. Banfield
The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solutions, Phillip L. Banfield
Bachelors Theses and Reports, 1928 - 1970
The cyanide method of extraction of gold and silver from their ores is extensively used in the United States and elsewhere. It is becoming increasingly more important in its use as the mining of lower grade deposits continues.
Age Hardening Of Silver-Platinum Alloys, Robert A. Wilson
Age Hardening Of Silver-Platinum Alloys, Robert A. Wilson
Bachelors Theses and Reports, 1928 - 1970
The alloy system selected for study was the binary alloy of platinum and silver. An examination of the various silver alloy diagrams revealed that of several possible alloys, the silver platinum was the most suitable with regard to solubility.
Occurrence And Origin Of Placer Gold In Montana, John K. Halse
Occurrence And Origin Of Placer Gold In Montana, John K. Halse
Bachelors Theses and Reports, 1928 - 1970
From time immemorial man has used gold as a medium of exchange, a measure of value, as jewelry and for ornamentation. Placer gold has led directly or indirectly to the settlement of lands, California and Alaska being the two best known examples. It has led the way to the discovery of other important mineral wealth, the discovery of the copper and silver deposits at Butte, Montana and the discovery of the silver deposits at Cripple Creek, Colorado being two good examples.
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Bachelors Theses and Reports, 1928 - 1970
A microscopic investigation of the Montana silver minerals was conducted. This study consisted mainly of identifying the silver and silver-bearing minerals and of determining their paragenetic relationships. The increasing amount of research in which the reflecting microscope is employed is evidence of the great value of this method of approach in the solution of problems of paragenesis of the opaque minerals.
An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.
An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.
Bachelors Theses and Reports, 1928 - 1970
Although there is no standardized list of alloys, most investigators have, to avoid confusion, concurred in at least grouping the metals under several general heads. Precious metals: gold, silver and the platinum group; the light metals: aluminum and magnesium; the non-ferrous metals (excluding all steels and iron-base alloys); and the antifriction metals.
Supergene Enrichment Of Silver Ores With Special Reference To Those From Neihart, Montana., Thomas Walker Page
Supergene Enrichment Of Silver Ores With Special Reference To Those From Neihart, Montana., Thomas Walker Page
Bachelors Theses and Reports, 1928 - 1970
In the development of a technique it was necessary to learn the fundamentals of ore microscopy as applied to the various minerals of silver, which included the use of reflected polarized light, etch reactions, microchemical analysis, and sight recognition of mineral. In addition it was necessary to become familiar with the accepted criteria of sequence, replacement, and other textural phenomena.
Leaching Copper Minerals In The Butte District, Kenneth C. Bellows
Leaching Copper Minerals In The Butte District, Kenneth C. Bellows
Bachelors Theses and Reports, 1928 - 1970
The history of mining in Butte is woven about three of our principal metals. The gold placers first attracted the attention of miners in 1863, and reached their peak production in 1867. Silver was the second metal mined, and this operation required the erection of large mills with a consequent increase in mining activity that made the district a prominent producer. Although the presence of copper in the silver ore had been known, the credit for the first development of the copper veins is due Senator W. A. Clark. The original Colusa, Mining Chief, and Gambetta claims were developed to …