Download or read book Quartzites and Siliceous Rocks in the Alabama Piedmont written by Karen F. Rheams and published by . This book was released on 1992 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silica in Sediments written by Hubert Andrew Ireland and published by . This book was released on 1959 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Siliceous Deposits of the Tethys and Pacific Regions written by James R. Hein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the biological origin of many siliceous deposits, their geochemical transformation in the marine environment, and their occurrence in many formations around the world, oceanographers, paleontologists, geologists, geochemists, and sedimentologists are working closely together to trace the evolution of such deposits. In this book, leading experts from all of these disciplines present new data on fine-grained deposits such as chert, primarily of the Tethys region but also of the Pacific. Much of the information presented here was gathered recently in coordinated international research projects and is made available in English for the first time.
Download or read book The Monterey Formation of California and the Origin of Its Siliceous Rocks written by Milton Nunn Bramlette and published by . This book was released on 1946 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Siliceous Phosphatic and Clauconitic Sediments of the Tertiary and Mesozoic written by Akihito Iijima and published by VSP. This book was released on 1994-04 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Proceedings volume contains 14 papers from the symposium ''Siliceous, Phosphatic and Glauconitic Sediments of the Tertiary and Mesozoic'', which was held during the 29th International Geological Congress, Kyoto, Japan, 24 August--3 September, 1992. The first part of this volume consists of papers dealing with Tertiary biosiliceous sediments of the Pacific Rim, starting in the northwest. The second part of the volume is composed of papers dealing with Tertiary and Mesozoic phosphatic rocks and phosphatebearing sequences, in particular of the eastern Pacific Rim and the Middle East. The articles serve to emphasize the similarities and differences between the Pacific Neogene successions and the Tethyan Mesozoic sequences of the Middle East.
Download or read book Nondetrital Siliceous Sediments written by Earle Rupert Cressman and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Text book of Geology written by James Dwight Dana and published by . This book was released on 1883 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystalline Silica Overview written by Sarkis G. Ampian and published by . This book was released on 1992 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1987, the International Agency for Research Against Cancer conducted a review of the health literature and concluded that crystalline silica was a probable human carcinogen. As a result of this finding, OSHA was required to regulate crystalline silica under its Hazard Communication Standard (HCS). The standard requires that all materials handled by OSHA-regulated facilities be labeled according to the requirements of HCS and that workers receive proper training on the handling of the material if the crystalline silica content equals or exceeds 0.1 weight percent (0.1%). MSHA currently is considering enacting its own HCS. This will be similar to OSHA's HCS. If the standard is enacted, most mineral producers will have to determine the respirable monitor filter and bulk crystalline silica contents of their ores and products so that workers and/or customers will know whether they are in compliance with the 0.1% HCS and/ or the OSHA permissible exposure level (PEL) of 50 micro-g for an 8-hour workday for respirable crystalline silica as determined from monitor samples. Two major concerns with the HCS are the widespread occurrence of crystalline silica in nature and the suitability of current technology for routinely determining crystalline silica concentrations at the 0.1% HCS level. Most ores are extracted from silica-bearing deposits, and silica is a common constituent of rocks and soils. OSHA's HCS will have the greatest impact on the producers of crushed stone, diatomite, dimension stone, gravel, industrial sand, perlite, pumice, pyrophyllite, sand, and talc because these materials frequently are shipped directly from the mill to the customer. MSHA's HCS would affect nearly all mineral producers. Those producers that have crystalline silica present in concentrations near the 0.1% cutoff point will have the most difficulty with the analysis. Crystalline silica can be quantified at the 0.1% level by X-ray difractometry in simple systems containing one, two, and possibly three minerals if (l) none of the accessory minerals has X-ray diffraction reflections that coincide or overlap with those of crystalline silica and (2) the standard has a particle size distribution and crystallinity similar to those of the sample. In some instances, it may not be possible to determine the crystalline silica content of a sample with any degree of certainty using the recommended regulatory protocol. In all cases, it is recommended that a qualified mineralogist identify the minerals in a sample prior to any regulatory analysis. Additionally, the uncertainty as to whether some silica polymorphs should be classified as crystalline or noncrystalline and the suitability of metastable high-temperature standards, such as cristobalite and tridymite, for regulatory analysis at ambient temperatures should be addressed further. This overview is written both to highlight these problems and to serve as a guide for analysts, regulators, and industry personnel who are involved in the crystalline silica issue. It also covers some of the difficulties and/or shortcomings in quantifying crystalline silica, such as the ubiquitous mineral quartz, in the workplace.
Download or read book Minerals Yearbook written by and published by . This book was released on 1885 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Siliceous Rocks and Culture written by A. Ramos-Millán and published by . This book was released on 1997 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: Res. en español e inglés.
Download or read book Elementary Physiography written by Sir Richard Gregory and published by . This book was released on 1893 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin Geological Survey of Western Australia written by Geological Survey of Western Australia and published by . This book was released on 1916 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Siliceous rocks and culture written by Universidad (Granada) and published by . This book was released on 1997 with total page 745 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Descriptive Catalogue of a Collection of the Economic Minerals of Canada and Notes on a Stratigraphical Collection of Rocks written by Anonymous and published by BoD – Books on Demand. This book was released on 2024-06-23 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprint of the original, first published in 1876.
Download or read book Rocks and Rock Minerals written by Louis Valentine Pirsson and published by . This book was released on 1908 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering and Mining Journal written by and published by . This book was released on 1903 with total page 1068 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 1965 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
