Download or read book Mineralogy Mineral Chemistry and Paragenesis of Gold Silver and Base metal Ores of the North Amethyst Vein System San Juan Mountains Mineral County Colorado written by N. K. Foley and published by . This book was released on 1993 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of progressive vein-related mineralization of structures in volcaninc rocks of the San Luis ad Bachelor caldras of the San Juan volcanic field of southwestern Colorado and its bearing on the economic potential of the area.
Download or read book Mineralogy and Paragenesis of the Schwartzwalder Mine Uranium Ore Jefferson County Colorado written by John V. Heyse and published by . This book was released on 1971 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paragenesis and Structure of Pitchblende bearing Veins Central City District Gilpin County Colorado written by Paul Kibler Sims and published by . This book was released on 1956 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petrology and Reservoir Paragenesis in the Sussex B Sandstone of the Upper Cretaceous Cody Shale House Creek and Porcupine Fields Powder River Basin Wyoming written by Debra K. Higley and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multidisciplinary approach to research studies of sedimentary rocks and their constituents and the evolution of sedimentary basins, both ancient and modern.
Download or read book The Structure Genesis and Paragenesis of the Fluorspar Deposits of Southern Illinois written by Louis Wade Currier and published by . This book was released on 1920 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Paragenesis and Trace Element Distribution in the Tri state Zinc lead District Missouri Kansas Oklahoma written by Richard D. Hagni and published by . This book was released on 1962 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A review of the literature pertaining to the mineral paragenesis and trace element distribution in the Tri-State zinc-lead district of Missouri, Kansas, and Oklahoma revealed inconsistencies in observation and in interpretation and divergent hypotheses regarding the origin of the ores. In an attempt to reconcile the data collected by many investigators over nearly three-quarters of a century, the writer observed working faces in 37 mines, collected over 2,000 specimens for binocular examination and prepared and studied 110 polished surfaces and 60 thin sections of the ores and associated rocks utilizing mineralographic, petrographic, and x-ray techniques. This detailed study resulted in the determination of a general paragenetic sequence of the minerals in Tri-State ore involving 7 periods of mineralization, each characterized by its own mineral suite and sequence, and each separated from the next by a period of tectonic activity, a period of solution, a hiatus of deposition or by a return to the crystallization of earlier formed minerals. Local deviations from the general paragenetic sequence have been noted, but the recurrence of crystallization of several minerals has been found to be more frequent than previously believed. Chalcopyrite and pyrite were found to have been deposited during 8 intervals, sphalerite and marcasite during 6, and galena and quartz during 5. Fifty-one minerals have been described from Tri-State ores, three for the first time in this thesis. Four mineral relationships previously believed to be absent in Tri-State ores have been observed and described. No significant variations in paragenetic sequence were detected either with respect to areal or stratigraphic distribution, contrary to the opinions of some who have worked in the district, but in accord with the results of previous studies of trace element distribution. Previous trace element analyses have been made of rocks, ores, soil and vegetation in the Tri-State district. Since these analyses failed to reveal any significant variation in trace element distribution, the present investigation involved spectrographic analyses of the single minerals: dolomite, galena, and sphalerite, especially selected for their freedom from included impurities as revealed under a stereoscopic microscope. Of the many elements detected spectroscopically, only silver in galena and cadmium, gallium, germanium, and indium in sphalerite were considered worthy of detailed study. In galena, silver was found to vary from 0.2 to 1.6 p.p.m. In sphalerite, cadmium varied from 4,000 to 7,000 p.p.m., gallium from 15 to 480 p.p.m., germanium from 25 to 380 p.p.m. and indium from 10 to 30 p.p.m. While such variations are large, they are wholly unrelated to areal, stratigraphic or paragenetic position, and substantiate the conclusion based on paragenetic studies that the ore-forming solutions in the Tri-State district were remarkably uniform and not significantly different from the ground water circulating in the district today. Indeed, the sulfide minerals which constitute the ores of the district are still being formed today"--Leaves [iii-iv]
Download or read book Mineral Parageneses written by James R. Craig and published by . This book was released on 1986 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physicochemical Basis of the Analysis of the Paragenesis of Minerals written by Dmitriĭ Sergeevich Korzhinskiĭ and published by . This book was released on 1959 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petrogenesis of Metamorphic Rocks written by Helmut G.F. Winkler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of the Most Important Ore Mineral Parageneses Under the Microscope written by Oskar Oelsner and published by . This book was released on 1966 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petrogenesis of Metamorphic Rocks written by H.G.F. Winkler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this book was published in 1965 and its French translation in 1966. The revised second edition followed in 1967 and its Russian translation became available in 1969. Since then, many new petrographic observations and experimental data elucidat ing reactions in metamorphic rocks have made a new approach in the study of metamorphic transformation desirable and possible. It is felt that this new approach, attempted in this book, leads to a better unders tanding of rock metamorphism. The concept of metamorphic facies and subfacies considers asso ciations of mineral assemblages from diverse bulk compositions as characteristic of a certain pressure-temperature range. As new petrographic observations accumulated, it became increasingly difficult to accommodate this information within a manageable framework of metamorphic facies and subfacies. Instead, it turned out that mineral assemblages due to reactions in common rocks of a particular composi tion provide suitable indicators of metamorphic conditions. Metamorphic zones, defined on the basis of mineral reactions, very effectively display the evolution of metamorphic rocks. Thus the im portance ofreactions in metamorphic rocks is emphasized. Experimen tal calibration of mineral reactions makes it possible to distinguish reac tions which are of petrogenetic significance from those which are not. This distinction provides guidance in petrographic investigations un dertaken with the object of deducing the physical conditions of metamorphism.
Download or read book Petrogenesis of Metamorphic Rocks written by Helmut G. F. Winkler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this book was published in 1965 and its French translation in 1966. The revised second edition followed in 1967 and its Russian translation became available in 1969. Since then, many new petrographic observations and experimental data elucidat ing reactions in metamorphic rocks have made a new approach in the study of metamorphic transformation desirable and possible. It is felt that this new approach, attempted in this book, leads to a better unders tanding of rock metamorphism. The concept of metamorphic facies and subfacies considers asso ciations of mineral assemblages from diverse bulk compositions as characteristic of a certain pressure-temperature range. As new petrographic observations accumulated, it became increasingly difficult to accommodate this information within a manageable framework of metamorphic facies and subfacies. Instead, it turned out that mineral assemblages due to reactions in common rocks of a particular composi tion provide suitable indicators of metamorphic conditions. Metamorphic zones, defined on the basis of mineral reactions, very effectively display the evolution of metamorphic rocks. Thus the im portance of reactions in metamorphic rocks is emphasized. Experimen tal calibration of mineral reactions makes it possible to distinguish reac tions which are of petrogenetic significance from those which are not. This distinction provides guidance in petrographic investigations un dertaken with the object of deducing the physical conditions of metamorphism."
Download or read book Diagenesis in sediments and sedimentary rocks written by and published by Elsevier. This book was released on 1979-01-01 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diagenesis in sediments and sedimentary rocks
Download or read book Petrology of Lamproites written by Roger H. Mitchell and published by Springer Science & Business Media. This book was released on 1991 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the first dedicated entirely to the petrology of lamproites and their relationships to other potassium-rich rocks, the objective of the authors is to provide a comprehensive critical review of the occurrence, mineralogy, geochemistry, and petrogenesis of the clan. Although lamproites represent one of the rarest of all rock types, they are both economically and scientifically important and we believe the time is ripe for a review of the advances made in their petrology over the past two decades. Many of these advances stem from the recognition of diamond-bearing lamproites in Western Australia and the reclassification of several anomalous diamond-bearing kim berlites as lamproites. Consequently lamproites, previously of interest only to a small number of mineralogists specializing in exotica outside the mainstream of igneous petrol ogy, have become prime targets for diamond exploration on a worldwide basis. Contemporaneously with these developments, petrologists realized that lamproites possess isotopic signatures complementary to those of midoceanic ridge basalts, alkali basalts, kimberlites, and other mantle-derived melts. These isotopic studies provided new insights into the long-term development of the mantle by suggesting that the source regions of lamproites were metasomatically enriched in light rare earth and other incompatible elements up to 1-2 Ga prior to the melting events leading to generation of the magma.
Download or read book Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1940 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemical Methods of Prospecting for Non Metallic Minerals written by Igor' L. Komov and published by VSP. This book was released on 1994-01-01 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geochemical methods of prospecting for and evaluation of minerals are applied widely today at all stages of geological exploration. However, geochemical methods of prospecting for many classes of non-metallic minerals have not been elaborated. This book is a completely revised, updated and expanded edition of the publication by the same authors, which was published in 1987. The contains a collection the latest data on geochemical prospecting for non-metals, which is valuable in view of the anticipated increase of consumption and utilization of non-metallic minerals in the future. The information on various types of raw material is presented in the following sequence: 1) general data (genetic types, conditions of formation, geological prospecting indications); 2) indicator minerals and elements; 3) geochemical methods of prospecting along dispersion trains and haloes, plus hydrogeochemical and geobotanical methods; 4) primary endogenic haloes; 5) vertical geochemical zonality; 6) methods, stages and sequence of work.
Download or read book Tectonics and Metamorphism written by Bozzano G Luisa and published by Elsevier. This book was released on 1976-01-01 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tectonics and Metamorphism
