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Author :
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (359 download)
Download or read book Gold-bearing Skarns written by and published by . This book was released on 1990 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U. S. Department U.S. Department of the Interior
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781534627871
Total Pages : 66 pages
Book Rating : 4.6/5 (278 download)
Download or read book Gold-Bearing Skarns written by U. S. Department U.S. Department of the Interior and published by Createspace Independent Publishing Platform. This book was released on 2016-06-14 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold exploration efforts of the mining industry in the last few years have centered on discovery of skarn deposits, such as Battle Mountain Gold Company's Fortitude deposit in Nevada, and Elders Resources' Red Dome deposit in Queensland, Australia, as well as on discovery of disseminated, carbonate-hosted, or Carlin-type deposits. Carbonate-hosted gold deposits are generally much larger deposits than skarns but are of much lower grade. Bagby and others (1987) report median tonnage and grade values of 5.1 million tonnes and 2.5 g/t Au, respectively, for 35 Carlin-type deposits. Median tonnage and grade values for the 90 skarn deposits we report in this study are 0.279 million tonnes and 5.7 g/t Au, respectively. Some major gold skarns, such as the Lower Fortitude deposit, Nevada (5.1 million tonne, 10.45 g/t Au), and the deposit at Bau, Malaysia (2.4 million tonnes), however, contain more gold than many of the large, disseminated-type deposits and are thus extremely attractive as exploration targets. The geologic characteristics of gold-bearing skarn deposits have only recently been addressed (Meinert, 1988a, b, 1989). This paper presents descriptive and grade-tonnage information obtained from more than 90 deposits that have been referred to in the literature as "Au-bearing skarns," "Au-rich skarn," or "Au-skarn," in a format somewhat similar to models in Cox and Singer (1986) but as modified by P.B. Barton (written commun., 1986). These and many other deposits, generally referred to as gold skarns in the literature, are occasionally further differentiated into contact, or proximal, skarns and distal skarns (Sillitoe, 1983, 1987; Bonham, 1985). Special attention has been given to the mineral chemistry of gangue skarn minerals as they have previously proved useful in distinguishing skarn types. This paper consists of a geologic description of Au-bearing skarns, presented in a form modified from that established previously for Cu-, Zn-Pb-, and Fe-skarn descriptive models (Cox and Singer, 1986) to allow rapid comparison and contrast; grade-tonnage distributions of Au-bearing skarns; and a combination references-bibliography section.
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ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (9 download)
Download or read book Gold-bearing Skarns written by and published by . This book was released on 1991 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. J. Orris
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (161 download)
Download or read book Description and Grades and Tonnages of Gold-bearing Skarns written by G. J. Orris and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Julia E. Reid
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.F/5 ( download)
Download or read book Skarn Occurrences in Utah and the Potential for Associated Gold Mineralization written by Julia E. Reid and published by . This book was released on 1991 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geological Survey (U.S.)
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (631 download)
Download or read book Gold-Bearing Skarns - U.S. Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1990 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kula Misra
Publisher : Springer Science & Business Media
ISBN 13 : 9401139253
Total Pages : 857 pages
Book Rating : 4.4/5 (11 download)
Download or read book Understanding Mineral Deposits written by Kula Misra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 857 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mineral deposits have supplied useful or valuable material for human consumption long before they became objects of scientific curiosity or commercial exploitation. In fact, the earliest human interest in rocks was probably because of the easily accessible, useful (e. g. , red pigment in the form of earthy hematite) or valuable (e. g. , native gold and gemstones) materials they contained at places. In modem times, the study of mineral deposits has evolved into an applied science employing detailed field observations, sophisticated laboratory techniques for additional information, and computer modeling to build complex hypotheses. Understanding concepts that would someday help geologists to find new mineral deposits or exploit the known ones more efficiently have always been, and will continue to be, at the core of any course on mineral deposits, but it is a fascinating subject in its own right, even for students who do not intend to be professional economic geologists. I believe that a course on mineral deposits should be designed as a "capstone course" that illustrates a comprehensive application of concepts from many other disciplines in geology (mineralogy, stratigraphy and sedimentation, structure and tectonics, petrology, geochemistry, paleontology, geomorphology, etc. ). This book is intended as a text for such an introductory course in economic geology, primarily for senior undergraduate and graduate students in colleges and universities. It should also serve as a useful information resource for professional economic geologists.
Author : Gerald E. Ray
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.F/5 ( download)
Download or read book Skarns in British Columbia written by Gerald E. Ray and published by . This book was released on 1997 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Skarns in British Columbia have historically been important sources of iron, tungsten, copper, and gold. This publication begins with an introduction on skarn terminology and the problems of skarn identification. It then reviews a genetic model of skarn formation and presents descriptive profiles of eight types of skarn deposits; describes the database of at least 735 skarn occurrences in the province, and the number and distribution of skarns in British Columbia according to their associations, class, age, and distribution; and notes the ages of British Columbia skarns and the total production of various metals extracted from British Columbia skarns. Subsequent sections provide information on assays and metal ratios of mineralized skarns, skarn mineralogy, skarn mineral chemistry, chemistry of skarn-related intrusions, and the mapping and evaluation of skarns. The appendix contains a listing of 735 skarn occurrences in British Columbia, giving deposit name, MINFILE number, latitude/longitude, elements and minerals present, and associated rocks and their ages.
Author : Steffen Gerd Hagemann
Publisher :
ISBN 13 :
Total Pages : 584 pages
Book Rating : 4.3/5 (91 download)
Download or read book Gold in 2000 written by Steffen Gerd Hagemann and published by . This book was released on 2000 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U.S. Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Richard Lentz
Publisher :
ISBN 13 :
Total Pages : 686 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mineralized Intrusion-related Skarn Systems written by David Richard Lentz and published by . This book was released on 1998 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Franco Pirajno
Publisher : Springer Science & Business Media
ISBN 13 : 140208613X
Total Pages : 1250 pages
Book Rating : 4.4/5 (2 download)
Download or read book Hydrothermal Processes and Mineral Systems written by Franco Pirajno and published by Springer Science & Business Media. This book was released on 2008-10-14 with total page 1250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrothermal processes on Earth have played an important role in the evolution of our planet. These processes link the lithosphere, hydrosphere and biosphere in continuously evolving dynamic systems. Terrestrial hydrothermal processes have been active since water condensed to form the hydrosphere, most probably from about 4.4 Ga. The circulation of hot aqueous solution (hydrothermal systems) at, and below, the Earth’s surface is ultimately driven by magmatic heat. This book presents an in-depth review of hydrothermal proceses and systems that form beneath the oceans and in intracontinental rifts, continental margins and magmatic arcs. The interaction of hydrothermal fluids with rockwalls, the hydrophere and the biophere, together with changes in their composition through time and space, contribute to the formation of a wide range of mineral deposit types and associated wallrock alteration. On Earth, sites of hydrothermal activity support varied ecosystems based on a range of chemotrophic microorganisms both at surface and in the subsurface. This book also provides an overview of hydrothermal systems associated with meteorite impacts and explores the possibility that hydrothermal processes operate on other terrestrial planets, such as Mars, or satellites of the outer planets such as Titan and Europa. Possible analogues of extraterrestrial putative hydrothermal processes pose the intriguing question of whether primitive life, as we know it, may exist or existed in these planetary bodies. Audience: This volume will be of interest to scientists and researchers in geosciences and life sciences departments, as well as to professionals and scientists involved in mining and mineral exploration.
Author :
Publisher :
ISBN 13 :
Total Pages : 322 pages
Book Rating : 4.:/5 (319 download)
Download or read book U.S. Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. A. Bollinger
Publisher :
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.3/5 (243 download)
Download or read book U.S. Geological Survey Bulletin written by G. A. Bollinger and published by . This book was released on 1983 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geological Survey (U.S.)
Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.3/5 (121 download)
Download or read book USGS Research on Mineral Resources--1989 written by Geological Survey (U.S.) and published by . This book was released on 1988 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: See journals under US Geological survey. Circular 1035.
Author : Stylianos Augustithis
Publisher : Walter de Gruyter
ISBN 13 : 3110895501
Total Pages : 676 pages
Book Rating : 4.1/5 (18 download)
Download or read book Atlas of the Textural Patterns of Ore Minerals and Metallogenic Processes written by Stylianos Augustithis and published by Walter de Gruyter. This book was released on 2010-10-13 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth L. Tanaka
Publisher :
ISBN 13 :
Total Pages : 494 pages
Book Rating : 4.3/5 (243 download)
Download or read book U.S. Geological Survey Bulletin written by Kenneth L. Tanaka and published by . This book was released on 1983 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: A workshop report on the rationale for airborne remote sensing in earth science in the next decade.
