Download or read book Stability Transformations and Fate of Residual Mercury at the Inoperative New Idria Mercury Mine New Idria California written by Adam Douglas Jew and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury mining in the California Coast Range has resulted in over a thousand mercury mines of various sizes that have yet to be remediated and are potential point sources of Hg pollution. The New Idria mine, located in San Benito County, California, was the second largest mercury mine in North America and was not remediated following its closure in 1972. Only within the past two years has it been designated as an EPA Superfund site and is currently undergoing remediation. This thesis focuses on the stability of mercury remaining at the site, the types of mercury phases present at the site as well as downstream from it, and the transport of mercury from the site. The stability of cinnabar (HgS), the primary mercury-bearing phase at the New Idria mine and other mercury mines in the California Coast Range, was investigated in the presence of microorganisms found in the acid mine drainage (AMD) system at the site. Geomicrobiological and geochemical studies of the identity and effects of these microorganisms on the solubility of HgS identified Thiomonas species and showed that the AMD bacterial consortium significantly enhances the solubility of cinnabar and metacinnabar, the two common HgS crystalline phases present. These two phases are very insoluble (Ksp = 10^-54 and 10^-52, respectively) in the absence of these bacteria and are often considered to be relatively nonbioavailable. The phases of mercury present in the waste piles and downstream sediments were analyzed using a combination of sequential chemical extractions and synchrotron-based techniques, including a new low-temperature extended x-ray absorption fine structure (EXAFS) spectroscopy method developed in this project. This new method allows, for the first time, quantification of the amount of elemental mercury present in complex mine waste samples and associated sediments that contain a variety of Hg-bearing phases. When coupled with field- and lab-based evasion studies of Hg vapor from mine wastes, this new approach showed that high mercury evasion rates into the atmosphere from the New Idria and other Hg mine sites in the California Coast Range can be positively correlated with high levels of elemental Hg in the mine wastes. Another new discovery from this study is that freshwater diatoms in the New Idria drainage system are one of the major sinks for mercury. Selective chemical extraction and EXAFS studies of the species of mercury associated with diatom frustules showed that these frustules can stably sequester mercury in low bioavailability forms. These studies also showed that the abundant iron-(oxy)hydroxide (ferrihydrite) nanoparticles present in the New Idria drainage system have very little associated mercury, which contradicts long-held assumptions that sorption of Hg(II) on these nanoparticles is a major Hg sequestration and transport mechanism in the New Idria drainage system. A general conclusion from this study is that the majority of mercury in the New Idria drainage system is in relatively stable, low bioavailability forms. The understanding gained from this study of the stability, forms, and transport of mercury at the New Idria site can be extrapolated to other similar inoperative mercury mine sites in the California Coast Range and should aid in their future remediation efforts.
Download or read book Mercury Speciation in Acid Mine Drainage written by Priya M. Ganguli and published by . This book was released on 1998 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Persistent Environmental Impacts from the Second Largest Mercury Mine in North America written by Rachel Hohn and published by . This book was released on 2021 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of New Idria Mercury Deposit San Benito County Calif written by Russell R. Trengove and published by . This book was released on 1949 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Contamination from Historic Gold Mining in California written by Charles N. Alpers and published by . This book was released on 2000 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry as a Guide in Underground Exploration for Mercury Ore at the New Idria Mine San Benito County California written by Richard Burton Jones and published by . This book was released on 1972 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Contamination from Historic Gold Mining in California written by Charles N. Alpers and published by . This book was released on 2000 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supernatural beings from Slovenian myth and folktales written by Monika Kropej and published by Založba ZRC. This book was released on 2012-01-01 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on Slovenian mythology the book contains a review of Slovenian mythological, historical, and narrative material. Over 150 supernatural beings are presented, both lexically and according to the role that they have in Slovenian folklore. They are classified by type, characteristic, features, and by the message conveyed in their motifs and contents. The material has been analysed in the context of European and some non-European mythological concepts, and the author deals with theory and interpretations as well as the conclusions of domestic and foreign researchers. The book forms new starting points and a classification of supernatural beings within a frame of a number of sources, some of which have been published for the first time in this book.
Download or read book Archaeometallurgy Materials Science Aspects written by Andreas Hauptmann and published by Springer Nature. This book was released on 2020-11-21 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book successfully connects archaeology and archaeometallurgy with geoscience and metallurgy. It addresses topics concerning ore deposits, archaeological field evidence of early metal production, and basic chemical-physical principles, as well as experimental ethnographic works on a low handicraft base and artisanal metal production to help readers better understand what happened in antiquity. The book is chiefly intended for scholars and students engaged in interdisciplinary work.
Download or read book Low Temperature Geochemistry written by Tu Guangzhi and published by VSP. This book was released on 1996-12 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-temperature geochemistry -- a 'hot topic' in geochemistry at present -- deals with geological and chemical processes and the geochemical evolution of elements in nature below 200C, including the geochemical behaviour of elements in the processes of their extraction, remobilization, transport and mineralization at room temperature and below 0C. This book focuses on the low-temperature geochemical behaviour of precious metals, REE, some individual dispersed elements and some non-metallic elements and their minergenesis at low-temperatures. The book deals with the following topics: 1) geochemistry of selected low-temperature deposits or prospects (horizons); 2) geochemistry of elements during diagenesis, buried metamorphism and low-grade metamorphism; 3) remobilization, transport and precipitation of some ore-forming elements under low-temperature conditions; 4) water/rock interactions in low-temperature open systems
Download or read book Mine Wastes written by Bernd Lottermoser and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's best practice in environmental mine-waste management requires a thorough understanding of the wastes produced. The knowledge of mine wastes represents a new interdisciplinary science and this book provides an introductory, descriptive and analytic overview of the wastes produced in the mineral industry. It describes the characterization, prediction, monitoring, disposal and treatment as well as environmental impacts. Intended for undergraduate courses, it systematically builds the reader’s understanding and knowledge of the wastes produced, their physical and chemical characteristics, and how to deal responsibly with them on a short and long-term basis. The text employs 22 case studies spanning the world’s mineral industry that elucidate best practice and specific challenges in mine-waste management and site rehabilitation.
Download or read book The Toxic Substances List written by and published by . This book was released on 1972 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of Geologic and Hydrologic Results written by and published by . This book was released on 1961 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold Dredging in California written by J. E. Doolittle and published by . This book was released on 1905 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury in the Environment written by and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hardrock Mining on Federal Lands written by National Research Council and published by National Academies Press. This book was released on 1999-11-03 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, the result of a congressionally mandated study, examines the adequacy of the regulatory framework for mining of hardrock mineralsâ€"such as gold, silver, copper, and uraniumâ€"on over 350 million acres of federal lands in the western United States. These lands are managed by two agenciesâ€"the Bureau of Land Management in the Department of the Interior, and the Forest Service in the Department of Agriculture. The committee concludes that the complex network of state and federal laws that regulate hardrock mining on federal lands is generally effective in providing environmental protection, but improvements are needed in the way the laws are implemented and some regulatory gaps need to be addressed. The book makes specific recommendations for improvement, including: The development of an enhanced information management system and a more efficient process to review new mining proposals and issue permits. Changes to regulations that would require all mining operations, other than "casual use" activities that negligibly disturb the environment, to provide financial assurances for eventual site cleanup. Changes to regulations that would require all mining and milling operations (other than casual use) to submit operating plans in advance.
Download or read book KING S AMERICAN DISPENSATORY written by HARVEY WICKES. FELTER and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
