Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Geology
A Study And Application Of The Process Of Supergene Enrichment Of Silver Ores., Arthur C. Verling
A Study And Application Of The Process Of Supergene Enrichment Of Silver Ores., Arthur C. Verling
Bachelors Theses and Reports, 1928 - 1970
In many deposits of silver ores the grade of the ore decreases considerably a few hundred feet below the surface. It is believed that in many cases the better ores owe their richness in part to the process of sulphide enrichment. It is recognized, however, that many rich silver ores are hypogene deposits that have been affected very little, if any, by processes of enrichment.
The Extraction Of Manganese From Manganese Flue Dust., John Raymond Moore
The Extraction Of Manganese From Manganese Flue Dust., John Raymond Moore
Bachelors Theses and Reports, 1928 - 1970
It is estimated that 90 to 95% of the world’s consumption of manganese is used in the steel industry in the form of either ferromanganese or spiegeleisen. The remainder is used in the form of either salts or oxides, chloride, dioxide and monoxide.
Contact Metamorphism In The Highlands, Frank Trask Jr.
Contact Metamorphism In The Highlands, Frank Trask Jr.
Bachelors Theses and Reports, 1928 - 1970
On the southern margin of the Boulder Batholith, about twenty miles south of Butte in the Highland Mountains, there are many miles of contact between the igneous and sedimentary rocks. As two kinds of igneous rocks and many different kinds of sedimentary rock are present, it is an excellent place for the study of contact metamorphism.
Geology And Ore Deposits Of The Golden Era And Goldfinch Mines, Argenta Mining District, Montana., Glenn C. Johnston
Geology And Ore Deposits Of The Golden Era And Goldfinch Mines, Argenta Mining District, Montana., Glenn C. Johnston
Bachelors Theses and Reports, 1928 - 1970
This report includes the results of geological investigation of a small area in the northern part of the Argenta mining district. Approximately two square miles were mapped. The underground working of the three mines only were accessible: the Goldfinch. Golden Era, and Mayday mines.
Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson
Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson
Bachelors Theses and Reports, 1928 - 1970
Gold is one of the rarer metals in nature, and chemically it is one of the most inactive. Gold forms stable, natural compounds with few other elements, and only with metals.