Download or read book Occurrence and Origin of the Titanium Deposits of Nelson and Amherst Counties Virginia written by Clarence Samuel Ross and published by . This book was released on 1941 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annotated Bibliographies of Mineral Deposits in the Western Hemisphere written by John Drew Ridge and published by Geological Society of America. This book was released on 1972 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluorspar Deposits Near Meyers Cove Lemhi County Idaho written by D. C. Cox and published by . This book was released on 1954 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fluorspar deposits near Meyers Cove, Lemhi County, Idaho, are localized along three groups of shear zones: one group strikes northeast and dips steeply northwestward, another strikes northeast and dips gently northwestward, and the third strikes northwest and dips gently southwestward. The country rocks are tuffs and flows of the Casto volcanics of Permian (?) age and the Challis volcanics of late Oligocene or early Miocene age. The known deposits are in a belt about 3 miles long and 2 miles wide and crop out at altitudes between 5,100 feet and 7,200 feet above sea level. The principal vein minerals are fluorite, chalcedony, and barite. The fluorite occurs as lodes, crusts around fragments of rock, and replacements of fine breccia. The lodes range in size from veinlets to vein zones several hundred feet long and as much as 20 feet wide and contain ore that ranges in grade from 40 percent to 85 percent CaF2 ; the average grade is about 50 percent CaF2.
Download or read book Geological Survey Circular written by and published by . This book was released on 1951 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1946 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Fault Determinations by Geophysical Methods in the Fluorspar Areas of Western Kentucky written by Frederick William Lee and published by . This book was released on 1946 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations no 2002 to No 7380 written by and published by . This book was released on 1946 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ringelmann Smoke Chart written by United States. Bureau of Mines and published by . This book was released on 1967 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1973 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1976 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1973 with total page 740 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 1957 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1970 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Bibliographies of Hydrothermal and Magmatic Mineral Deposits written by and published by Geological Society of America. This book was released on 1958 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anorthosites written by Lewis D. Ashwal and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea for a book on anorthosites came to me in January of 1986 while returning to Houston after holiday festivities in Dallas. The original idea was a review paper on anorthosites, but by the time I reached Houston, the subject material I contemplated induding was obviously too extensive for a single paper. The Director of the Lunar and Planetary Institute, Kevin Burke, was receptive to the idea of a book, and suggested that I contact Peter Wyllie, who serves as Editor of the Springer-Verlag series Minerals and Rocks. This effort, which I originally expected would take about a year, has taken nearly 6. I have many excuses- indolence, moving to another continent, other commitments, etc.-but the basic truth is that writing a book is much larger an undertaking than can be anticipated. Many people are aware of this, and I was duly forewarned. . But why write a book on anorthosites? This is a very good question, which I have considered from many angles. One rationale can be expressed in terms of a comparison between anorthosite and basalt. A first-order understanding of basalt genesis has been extant for many years. By contrast, there is little agreement about the origin of anorthosite. There are good reasons for studying and writing about basalt: it is the most abundant rock type on the Earth's surface, and is also plentiful on the surfaces of the other terrestrial planets.
Download or read book Geology and Resources of Titanium in the United States written by and published by . This book was released on 1976 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of Books and Reports in the Bureau of Mines Technical Library Pittsburgh Pa written by United States. Bureau of Mines. Technical Library, Pittsburgh and published by . This book was released on 1968 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
