Alteration Spatially Associated with the Phoenix Unconformity-Related Uranium Deposit, Athabasca Basin, Saskatchewan, Canada 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 Alteration Spatially Associated with the Phoenix Unconformity-Related Uranium Deposit, Athabasca Basin, Saskatchewan, Canada PDF full book. Access full book title Alteration Spatially Associated with the Phoenix Unconformity-Related Uranium Deposit, Athabasca Basin, Saskatchewan, Canada by Jack Dann. Download full books in PDF and EPUB format.
Author: Jack Dann Publisher: ISBN: Category : Languages : en Pages :
Book Description
Unconformity-related uranium deposits in the Athabasca Basin represent a significant global resource of uranium. One such deposit, the Phoenix Deposit, discovered in 2007 on Denison Mine's Wheeler River property, shares similarities with other deposits in the Basin. The Phoenix Deposit is located at the apex between a basement shear structure, and the unconformity between the crystalline basement and overlying sandstones. The shear structure extends into the sandstones, this structure controls the distribution of alteration minerals in the basement and early alteration phases in sandstones. The shear structure extending to sandstones is not spatially associated with late alteration phases associated with the uranium deposit, suggesting that the structure was not important for uranium mineralisation. Bulk rock compositions of sandstones show chimney-like distribution of elements above the uranium deposit. The most notable ones are the distribution of yttrium, and boron. Rare earth elements and yttrium are not soluble in aqueous fluids at low temperatures and they are enriched in uranium ore. Therefore, the chimney-like distribution of elements are attributed to uraniferous hydrothermal activity in sandstones. Petrographic and chemical analysis of alteration associated with the Phoenix Deposit shows two types of tourmaline, a pre-ore (Tur 1) in the basement, which is likely a metamorphic product (Tur1) and a syn-ore magnesiofoitite (Tur 2) in the basement and the sandstones. Three generations of chlorite are identified within the alteration halo of the Phoenix Deposit; an early Fe-rich clinochlore (C1) in the basement and sandstones, the second generation, Mg-rich sudoitic chlorite (C2) in the basement, and a late, sudoitic chlorite (C3) in the basement and sandstones. Illite shows three types; an early and late M1 and a late M2. M1 is found as two polytypes, 1Mc and 1Mt, in the basement and sandstones, with the 1Mt having a spatial relationship with the uranium deposit. Late M2 illite is coarse-grained and occurs in the basement and sandstones. Near Infrared (NIR) spectra of sandstones overlying the deposit shows absorption features between 600 and 700 nm. It is considered that these absorption features appear to have been produced during late hydrothermal activity and may have a temporal as well as spatial relationship with uranium mineralisation.
Author: Jack Dann Publisher: ISBN: Category : Languages : en Pages :
Book Description
Unconformity-related uranium deposits in the Athabasca Basin represent a significant global resource of uranium. One such deposit, the Phoenix Deposit, discovered in 2007 on Denison Mine's Wheeler River property, shares similarities with other deposits in the Basin. The Phoenix Deposit is located at the apex between a basement shear structure, and the unconformity between the crystalline basement and overlying sandstones. The shear structure extends into the sandstones, this structure controls the distribution of alteration minerals in the basement and early alteration phases in sandstones. The shear structure extending to sandstones is not spatially associated with late alteration phases associated with the uranium deposit, suggesting that the structure was not important for uranium mineralisation. Bulk rock compositions of sandstones show chimney-like distribution of elements above the uranium deposit. The most notable ones are the distribution of yttrium, and boron. Rare earth elements and yttrium are not soluble in aqueous fluids at low temperatures and they are enriched in uranium ore. Therefore, the chimney-like distribution of elements are attributed to uraniferous hydrothermal activity in sandstones. Petrographic and chemical analysis of alteration associated with the Phoenix Deposit shows two types of tourmaline, a pre-ore (Tur 1) in the basement, which is likely a metamorphic product (Tur1) and a syn-ore magnesiofoitite (Tur 2) in the basement and the sandstones. Three generations of chlorite are identified within the alteration halo of the Phoenix Deposit; an early Fe-rich clinochlore (C1) in the basement and sandstones, the second generation, Mg-rich sudoitic chlorite (C2) in the basement, and a late, sudoitic chlorite (C3) in the basement and sandstones. Illite shows three types; an early and late M1 and a late M2. M1 is found as two polytypes, 1Mc and 1Mt, in the basement and sandstones, with the 1Mt having a spatial relationship with the uranium deposit. Late M2 illite is coarse-grained and occurs in the basement and sandstones. Near Infrared (NIR) spectra of sandstones overlying the deposit shows absorption features between 600 and 700 nm. It is considered that these absorption features appear to have been produced during late hydrothermal activity and may have a temporal as well as spatial relationship with uranium mineralisation.
Author: Kewen Wang Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
The Phoenix unconformity-related uranium (URU) deposit, located in the southeastern Athabasca Basin, is associated with a NE-trending, moderately SE-dipping reverse fault crosscutting the unconformity between the Proterozoic Athabasca Group and the Archean - Paleoproterozoic basement. The mineralisation occurs mainly along the faulted graphite zones or at the intersection of the faults and unconformity and is associated with pervasively developed tourmaline alteration. Primary aqueous fluid inclusions were studied in post-diagenetic, pre- to syn-mineralisation quartz overgrowths and vug-filling drusy quartz in sandstone (QBSN2), and syn- to post-mineralisation, veinfilling coarse-grained drusy quartz in both sandstone (QBSN3) and basement (QBSM4). Only a few liquid-dominant biphase aqueous fluid inclusions were found in QBSN2, while four types of aqueous fluid inclusions, including liquid-dominant biphase (liquid + vapour), vapour-dominant biphase (vapour + liquid), monophase (vapour-only) and triphase (liquid + vapour + solid) inclusions, were recognized in QBSN3 and QBSM4. The coexistence of multiple types of inclusions within individual fluid inclusion assemblages is interpreted to indicate fluid immiscibility and heterogeneous trapping. Microthermometric and cryogenic Raman spectroscopic analyses reveal that the highsalinity fluids in QBSN2, QBSN3 and QBSM4 belong to the H2O-NaCl-CaCl2 ± MgCl2 fluid system. The liquid-dominant inclusions in QBSN2 are interpreted to represent homogeneous trapping of the liquid phase show a high salinity of 27.9 wt% (NaCl+CaCl2; same for all the salinity values unless otherwise specified) and a moderate temperature of 128 °C, whereas those in QBSN3 indicate a wide range of salinities from 1.2 to 33.0 wt% and temperatures from 80 to 157 C for QBSN3. The inclusions of QBSM4 yielded high salinities from 26.0 to 30.1 wt% and low to moderate temperatures from 90 to 130 °C. Bulk fluid inclusion volatile analysis by mass spectrometry indicates H2O as the dominant species, with less than 1 mole% non-aqueous volatiles. The Raman spectroscopic study of the metamorphic graphite in metapelites (Gr1) suggests gradual structural disordering towards the mineralisation, reflected by an increasing percentage of disordered spectra (D1 and D2 bands at ~1350 cm-1 and ~1620 cm-1 other than prominent G band at ~1580 cm-1). Surficial defects appearing as hollow points were observed near the mineralisation zone and interpreted to be caused by oxidizing acidic brines. Secondary methane-dominant vapour inclusions associated with biphase aqueous inclusions in the pegmatitic or massive quartz in the basement (QBSM2) are considered to represent the basement derived C-O-H fluids, which may have served as reducing agents for U precipitation. The new data obtained in this study about fluid inclusions and graphite in the Phoenix uranium deposit are generally consistent with those from other unconformity-related uranium deposits in the Athabasca Basin. However, our mineralising fluid temperatures are considerably lower than those reported in previous studies, and the depth of mineralisation, inferred from fluid immiscibility and pressure calculations, is significantly shallower than invoked in the conventional deep-burial hydrothermal model. Furthermore, the spatial association of graphite dissolution and structural disordering with mineralisation confirm the important role of graphite in mineralisation through fluid-graphite reaction and generation of hydrocarbons.
Author: Michael R. Rosen Publisher: Springer Nature ISBN: 3030665763 Category : Science Languages : en Pages : 592
Book Description
This book honors the career of Professor Elizabeth Gierlowski-Kordesch who was a pioneer and leader in the field of limnogeology since the 1980s. Her work was instrumental in guiding students and professionals in the field until her untimely death in 2016. This collection of chapters was written by her colleagues and students and recognize the important role that Professor Gierlowski-Kordesch had in advancing the field of limnogeology. The chapters show the breadth of her reach as these have been contributed from virtually every continent. This book will be a primary reference for scientists, professionals and graduate students who are interested in the latest advances in limnogeologic processes and basin descriptions in North and South America, Europe, Africa, and China. *Free supplementary material available online for chapters 3,11,12 and 13. Access by searching for the book on link.springer.com
Author: B.S. Daya Sagar Publisher: Springer ISBN: 3319789996 Category : Science Languages : en Pages : 911
Book Description
This Open Access handbook published at the IAMG's 50th anniversary, presents a compilation of invited path-breaking research contributions by award-winning geoscientists who have been instrumental in shaping the IAMG. It contains 45 chapters that are categorized broadly into five parts (i) theory, (ii) general applications, (iii) exploration and resource estimation, (iv) reviews, and (v) reminiscences covering related topics like mathematical geosciences, mathematical morphology, geostatistics, fractals and multifractals, spatial statistics, multipoint geostatistics, compositional data analysis, informatics, geocomputation, numerical methods, and chaos theory in the geosciences.
Author: Ian Hore-Lacy Publisher: Woodhead Publishing ISBN: 0081003331 Category : Technology & Engineering Languages : en Pages : 490
Book Description
Uranium for Nuclear Power: Resources, Mining and Transformation to Fuel discusses the nuclear industry and its dependence on a steady supply of competitively priced uranium as a key factor in its long-term sustainability. A better understanding of uranium ore geology and advances in exploration and mining methods will facilitate the discovery and exploitation of new uranium deposits. The practice of efficient, safe, environmentally-benign exploration, mining and milling technologies, and effective site decommissioning and remediation are also fundamental to the public image of nuclear power. This book provides a comprehensive review of developments in these areas. Provides researchers in academia and industry with an authoritative overview of the front end of the nuclear fuel cycle Presents a comprehensive and systematic coverage of geology, mining, and conversion to fuel, alternative fuel sources, and the environmental and social aspects Written by leading experts in the field of nuclear power, uranium mining, milling, and geological exploration who highlight the best practices needed to ensure environmental safety
Author: Murray Gray Publisher: John Wiley & Sons ISBN: 0470090812 Category : Science Languages : en Pages : 451
Book Description
A counterpoint to biodiversity, geodiversity describes the rocks, sediments, soils, fossils, landforms, and the physical processes that underlie our environment. The first book to focus exclusively on the subject, Geodiversity describes the interrelationships between geodiversity and biodiversity, the value of geodiversity to society, as well as current threats to its existence. Illustrated with global case studies throughout, the book examines traditional approaches to protecting biodiversity and the new management agenda which is starting to be used instead.
Author: Jack Dann
Author: Jack Dann
Author: Kewen Wang
Author: 
Author: 
Author: Robert A. Rich
Author: Michael R. Rosen
Author: International Atomic Energy Agency
Author: B.S. Daya Sagar
Author: Ian Hore-Lacy
Author: Murray Gray