Excursion Guide, Fluorite and Barite Mineralisations of the Rhenohercynian and Saxothuringian Units in Hercynian and Post-Hercynian Times PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Excursion Guide, Fluorite and Barite Mineralisations of the Rhenohercynian and Saxothuringian Units in Hercynian and Post-Hercynian Times PDF full book. Access full book title Excursion Guide, Fluorite and Barite Mineralisations of the Rhenohercynian and Saxothuringian Units in Hercynian and Post-Hercynian Times by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category : Barite
Languages : en
Pages : 128
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Barite
Languages : en
Pages : 128
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Barite
Languages : en
Pages : 0
Get Book Here
Book Description
Author: Horst Kämpf
Publisher:
ISBN:
Category :
Languages : de
Pages : 117
Get Book Here
Book Description
Author: Horst Kämpf
Publisher:
ISBN:
Category :
Languages : en
Pages : 117
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Erzgebirge (Czech Republic and Germany)
Languages : en
Pages : 128
Get Book Here
Book Description
Author: Walter L. Pohl
Publisher: John Wiley & Sons
ISBN: 144439486X
Category : Science
Languages : en
Pages : 725
Get Book Here
Book Description
Humanity’s ever-increasing hunger for mineral raw materials, caused by a growing global population and ever increasing standards of living, has resulted in economic geology becoming a subject of urgent importance. This book provides a broad panorama of mineral deposits, covering their origin and geological characteristics, the principles of the search for ores and minerals, and the investigation of newly found deposits. Practical and environmental issues that arise during the life cycle of a mine and after its closure are addressed, with an emphasis on sustainable and "green" mining. The central scientific theme of the book is to place the extraordinary variability of mineral deposits in the frame of fundamental geological processes. The book is written for earth science students and practicing geologists worldwide. Professionals in administration, resource development, mining, mine reclamation, metallurgy, and mineral economics will also find the text valuable. Economic Geology is a fully revised translation of the the fifth edition of the German language text Mineralische und Energie-Rohstoffe. Additional resources for this book can be found at: www.wiley.com/go/pohl/geology. The author's website can be found at: http://www.walter-pohl.com.
Author: B.A. Wills
Publisher: Springer Science & Business Media
ISBN: 9400944764
Category : Technology & Engineering
Languages : en
Pages : 430
Get Book Here
Book Description
Due to the increasingly complex mineralogy, and lower grade of many current ore reserves, technology has, over the past decade, had to evolve rapidly to treat these materials economically in an industry which has undergone severe periods of recession. However, most of the technical innovations, such as the increasing use of solvent-extraction, ion-exchange etc., have been in the field of chemical ore processing, and, apart from the use of computers and ever larger unit process machines, there have been few major evolutionary changes in the field of physical mineral processing, where conventional crushing and grinding methods, essentially unchanged in half a century, are followed by the 'old-faithfuls'- flotation, gravity, magnetic and electrostatic methods of separation. Many of these techniques have major limitations in the treatment of 'new' ores such as complex sulphides, and the main purpose of the NATO Advanced study Institute (ASI) "Mineral Processing at a Crossroads" was to review the future of mineral processing. One of the great failings of physical methods is their inability to treat ultra-fine particles, and much research effort is required in this area. Flotation is still the most widely used and researched method for separating minerals, and is the only method which can be used to produce separate concentrates from complex sulphide ores. However, its performance on these 'modern' ores is poor, and it is in this area particularly that chemical methods will increasingly be integrated into plant circuits.
Author: Harald G. Dill
Publisher: Springer
ISBN: 3319188062
Category : Science
Languages : en
Pages : 488
Get Book Here
Book Description
This book will broaden readers’ understanding of pegmatites in a special geodynamic setting, dealing with the emplacement of the Hagendorf-Pleystein Pegmatite Province (HPPP) in the Central European Variscides. This treatise illustrates the complex processes leading to the formation and partial destruction of the pegmatites, documenting the geochronological, chemical, mineralogical, geological and geomorphological / sedimentological data set. The book starts with a detailed account of the economic geology of the various pegmatites, explaining why these deposits are a major resource of ceramic raw materials. In its concluding section, a model of the pegmatite evolution in an ensialic orogen provides meaningful insights into the genetic aspects of pegmatite generation. The Late Paleozoic rare-element pegmatites of the HPPP, Oberpfalz-SE, Germany, rank among the largest concentrations in Europe. The biggest pegmatite of this mining district totals 4.4 million tons of ore (Hagendorf-South). The mining history of the HPPP is restricted to the 20th century, when local entrepreneurs started mining operations in search of ceramic raw materials, feldspar and quartz. Today the “Silbergrube Aplite” is still worked for feldspar. The traditional mining of pegmatitic and aplitic rocks in Central Europe, such as the Bohemian Massif, which is shared by Germany, the Czech Republic, Poland and Austria, has been focused on these industrial minerals. In addition to these major commodities, lithium was mined for a period of time. But even today many of these pegmatites of calc-alkaline affiliation have not lost their appeal to mineralogists and mineral enthusiasts for their wealth of minerals that contain P, Nb, Ta, Li, Be, B, U, Th, Sc, Ti and Sn. The most favorable crustal section to bring about pegmatitic rocks of this type, encompassing pegmatoids, metapegmatites, reactivated pseudopegmatites and pegmatites sensu stricto is the ensialic orogen, exemplified by the Variscan (Hercynian) Orogen, which geodynamically connects the Paleozoic pegmatite provinces in North America and Europe. The geological history of the HPPP, however, goes much further than the Carboniferous-Permian magmatic activity, when the last structural disturbances of the Variscan orogeny affected the NE-Bavarian Basement between 450 and 330 Ma. During this time mafic magmatic rocks together with calcareous and arenaceous sediments were converted into paragneisses, calcsilicate rocks, and amphibolites. It is the period of time when tectonic shortening led to over thrusting and when the emplacement of nappes and the architectural elements of the ensialic orogen began taking shape. During the Late Permian, the Mesozoic and the Cenozoic, the HPPP did not lie idle in geological terms; hypogene and supergene alteration continued and found its most recent expression in alluvial-fluvial “nigrine” placer deposits, which resulted from the unroofing of the pegmatites and aplites in the HPPP and can be used even outside HPPP as an ore guide to pegmatites.
Author: Robert A. Rich
Publisher: Elsevier Science & Technology
ISBN:
Category : Nature
Languages : en
Pages : 296
Get Book Here
Book Description
Author: Paul H. Ribbe
Publisher:
ISBN:
Category : Sulfides
Languages : en
Pages : 302
Get Book Here
Book Description
