Author: Andrew B. StillingPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Bulk Composition of the Tanco Pegmatite at Bernic Lake, Manitoba, Canada
Author: Andrew B. StillingBulk Composition of the Tanco Pegmatite at Bernic Lake, Manitoba, Canada
Author: Andrew B. StillingBulk Composition of the Tanco Pegmatite at Bernic Lake, Manitoba, Canada
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Tanco pegmatite at Bernic Lake, Manitoba, Canada is a highly fractionated rare-element class, LCT family pegmatite with 9 internal zones and is one of the largest complex internally zoned pegmatites in the world. The outer zones of the pegmatite are generally concentric, while the shape of the inner zones, based on underground workings and drill core observations, are very irregular and complex. Tanco presents a unique opportunity to calculate the bulk composition of a pegmatite which, unlike previous works on other pegmatites, does not need to consider structural deformation and/or erosion to reconstruct the original size and shape. Tanco is essentially an undeformed blind pegmatite, with only minimal exposure through erosion at the bottom of Bernic Lake. Almost no reconstructive interpretation is required as th amount of eroded material is negligible and does not affect the over-all bulk composition calculations. Given the available information from the drill core logs and underground workings on theTanco pegmatite, it was possible to create the first 3D computer representation of a pegmatite. (Abstract shortened by UMI.).
Petrology and Mineralization of the Tanco Rare-element Pegmatite, Southeastern Manitoba
Author: P. ČernýThe Tanco Pegmatite at Bernic Lake, Manitoba
Author: Mineralogical Association of CanadaPublisher:
ISBN:
Category : Pegmatites
Languages : en
Pages : 734
Book Description
The Mineralogy and Geochemistry of the Lower Tanco Pegmatite, Bernic Lake, Manitoba, Canada
Author: K. J. FerreiraGranitic Systems
Author: O.T. RamoPublisher: Elsevier
ISBN: 9780444518828
Category : Science
Languages : en
Pages : 430
Book Description
This special volume stems from a symposium 'Granitic Systems - State of the Art and Future Avenues' that was held at the Department of Geology, University of Helsinki to mark the retirement of Professor Ilmari Haapala. The twenty articles in the volume cover a wide range of granite-related topics and focus on three general themes: tectonics and source regions, petrologic processes, and fractionated granites and pegmatites. Both original papers and reviews are included, and the volume will be acknowledged by anyone with a background in Earth Sciences ad a flavor for granitoid rocks. * Comprehensive account of the current status of granite-oriented research * Topics ranging from mineralogy, petrology, and geochemistry to tectonics and crustal evolution
Rare-element Geochemistry and Mineral Deposits
Author: Geological Association of CanadaPublisher: St. John's, N.L. : Geological Association of Canada
ISBN:
Category : Science
Languages : en
Pages : 360
Book Description
Critical Mineral Resources of the United States
Author: K. J. SchulzPublisher: Geological Survey
ISBN: 9781411339910
Category : Industrial minerals
Languages : en
Pages : 868
Book Description
As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.
Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia
Author: Thomas DittrichPublisher: Springer
ISBN: 3030109437
Category : Science
Languages : en
Pages : 125
Book Description
Lithium-cesium-tantalum (LCT) pegmatites are important resources for rare metals. For Cs, only the LCT pegmatites with the zeolite group mineral pollucite at Bikita (Zimbabwe Craton) and Tanco (Superior Province Craton) are of commercial importance. Common characteristics of world-class LCT pegmatite deposits include their Meso- to Neoarchean age and geological setting within greenstone belt lithologies on Archean Cratons. This study presents the first coherent and comparative scientific investigation of five major LCT pegmatite systems from the Yilgarn, Pilbara and Zimbabwe Craton. For the evaluation of their Cs potential and of the genetic concepts of pollucite formation, the pegmatites from Wodgina, Londonderry, Mount Deans and Cattlin Creek were compared to the Bikita pollucite mineralization. The integration of the new data (e.g., geochronological and radiogenic isotope data) into the complex geological framework: 1) enhances our knowledge of the formation of LCT pegmatite systems, and 2) will contribute to the further exploration of additional world-class LCT pegmatite deposits, which 3) may host massive pollucite mineralisations.