Author: Publisher:
ISBN:
Category : Canada
Languages : en
Pages : 1466
Book Description
Canadiana
Author: Fertile and Peraluminous Granites and Related Rare-Element Mineralization in Pegmatites, North-Central and Northeastern Superior Province, Ontario
Author: F. W. BreaksPublisher:
ISBN: 9781424925667
Category : Granite
Languages : en
Pages : 143
Book Description
Skarns in British Columbia
Author: Gerald E. RayPublisher:
ISBN:
Category : Science
Languages : en
Pages : 328
Book Description
Skarns in British Columbia have historically been important sources of iron, tungsten, copper, and gold. This publication begins with an introduction on skarn terminology and the problems of skarn identification. It then reviews a genetic model of skarn formation and presents descriptive profiles of eight types of skarn deposits; describes the database of at least 735 skarn occurrences in the province, and the number and distribution of skarns in British Columbia according to their associations, class, age, and distribution; and notes the ages of British Columbia skarns and the total production of various metals extracted from British Columbia skarns. Subsequent sections provide information on assays and metal ratios of mineralized skarns, skarn mineralogy, skarn mineral chemistry, chemistry of skarn-related intrusions, and the mapping and evaluation of skarns. The appendix contains a listing of 735 skarn occurrences in British Columbia, giving deposit name, MINFILE number, latitude/longitude, elements and minerals present, and associated rocks and their ages.
The Geology and Mineralization of the Coquihalla Gold Belt and Hozameen Fault System, Southwestern British Columbia
Author: Gerald E. RayPublisher: Province of British Columbia, Ministry of Energy, Mines and Petroleum Resources
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 116
Book Description
Description of the geology, gold deposits and mineral occurrences adjacent to the Hozameen fault system and Coquihalla serpentine belt in southwestern B.C. The report gives a general geology of the area, the structural geology, and the economic geology by mine or gold occurrence. A short description of other mineral occurrences is also given.
Reference Specimen Collection of Rare-element Pegmatites, Granitic Rocks and Migmatites, Mainly from the Superior Province of Ontario
Author: F. W. BreaksPublisher:
ISBN: 9781424968657
Category : Granite
Languages : en
Pages : 71
Book Description
Carbonatites, Nepheline Syenites, Kimberlites and Related Rocks in British Columbia
Author: British Columbia. Geological Survey BranchPublisher: Province of British Columbia, Ministry of Energy, Mines and Petroleum Resources
ISBN:
Category : Science
Languages : en
Pages : 158
Book Description
This study documents alkaline rock occurrences in British Columbia; describes their petrography, geochemistry, economic geology, and field relationships; and determines the timing and tectonic controls of emplacement, providing a basis for future, detailed studies. Work was begun in 1984 and included field mapping during the summers of 1984, 1985, and 1986. All the carbonatite-syenite localities (with the exception of the Wicheeda Lake and Mount Bisson showings) and a large number of the diatreme breccias were mapped and sampled.
New Discovery of Rare-element Pegmatite Mineralization, Separation Lake Area, Northwestern Ontario
Author: F. W. BreaksPublisher: [Sudbury] : Ontario Geological Survey
ISBN: 9780777854532
Category : Ore deposits
Languages : en
Pages : 9
Book Description
Geology and Petrochemistry of Granitic Pegmatite in Jema’a Pegmatite Field, Kaduna State
Author: Ahmed Isah HarunaPublisher: GRIN Verlag
ISBN: 3656280134
Category : Science
Languages : en
Pages : 221
Book Description
Doctoral Thesis / Dissertation from the year 2012 in the subject Geography / Earth Science - Geology, Mineralogy, Soil Science, grade: "none", Abubakar Tafawa Balewa University (School of Science), course: Economic Geology-Mineral Exploration, language: English, abstract: The research work “Geology and Petrochemistry of Granitic Pegmatites in Jema’a Field” is a systematic study of the pegmatites in relation to the adjoining granitoids (biotite muscovite granite, albite granite and granite aplite) with a view to understanding their geological and geodynamic evolution and subsequent economic potential through the behavior of rare elements. The field work was conducted on a scale of 1:50, 000. 33 rocks and mineral separates extracted from pegmatites were analyzed. The samples were subdivided into two parts; one part was analyzed using X-Ray Fluorescence to generate data on major and minor elements, while Instrumental Neutron Activation Analysis was used to generate data on trace elements. The other part of the samples was made into thin section for petrographic studies. Petrochemical and petrographic interpretations concur on the changes in colour of micas from brown biotite in granitoids to blue muscovite, to purplish green mica to purple mica in the pegmatites corresponding to increase in rare elements (Rb, Cs, Na, Ta, Nb, Ga) and volatiles (P, H2O, F) from the granitoids into the pegmatites. This constitute a fractionation trend. This is also strongly supported by fairly consistent increase in Aluminum Saturation Index (A/CNK), normative corundum, normative albite, Lost on Ignition (LOI), differentiation Index (DI) and corresponding decrease in Ba, Zr and Ti. The pegmatites contains more fluxes and liquidus depressing elements (P, H2O, F) especially phosphorus. The granitoids (biotite muscovite granite, albite granite and granite aplite) are therefore fertile, peraluminous, siliceous and S-type and are parental to the pegmatites. The feldspars display perthitic textures which show incomplete solid solution and lowering of liquidus. The tectonic discrimination of the granitoids and the pegmatites show that they were formed within syncollisional, peraluminous, and active continental margin. The research suggest fractionation as a metallogenetic process. The genetic model presents the granitoids ; biotite muscovite granite, albite granite and granite aplite as products of internal chemical differentiation of a fractionating batholiths where NaO replaces K2O as the system is cooling. This is common to most granite-rare-elements-pegmatites systems all over the world. Fractionation via rare elements accumulations is therefore an exploration tool.
Internal Structure of Granitic Pegmatites
Author: Eugene Nathan CameronPublisher:
ISBN:
Category : Science
Languages : en
Pages : 162
Book Description
Pegmatites
Author: David LondonPublisher:
ISBN:
Category : Pegmatites
Languages : en
Pages : 382
Book Description
Accompanying CD-ROM contains all illustrations of volume and PDF of chapters of "Graranitic pegmatites, short course handbook 7" published in 1982, edited by Petr Černý, P.