Download or read book Field Trip 4 Guidebook The Hemlo Gold Deposits Ontario written by Ont.). Geological Association of Canada. Mineralogical Association of Canada. Canadian Geophysical Union. Joint Annual Meeting (1986 : Ottawa and published by . This book was released on 1986 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Trip Guidebook written by and published by . This book was released on 1986 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology and Geochemistry of Gold Deposits of the Big Canyon Area El Dorado County California written by John Thomas Nash and published by . This book was released on 1989 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Trip A1 Guidebook Geology and Gold Deposits of the Hemlo Area written by Geological Association of Canada. Toronto '91 and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Trip Guidebook written by International Association on the Genesis of Ore Deposits. Symposium and published by . This book was released on 1990 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mineralogy and Geochemistry of the Hemlo Gold Deposit Ontario written by D. C. Harris and published by Energy Mines and Resources Canada. This book was released on 1989 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hemlo gold deposit is near the northeast shore of Lake Superior, 35 km east of Marathon, Ontario, adjacent to the TransCanada Highway. This report describes the mineralogy of the main Hemlo gold deposit, the distribution of the various minerals and some geochemical characteristics of the ore zones. The study was carried out by reflected light and transmitted light microscopy, quantitative and qualitative electron-microprobe analysis and geochemical analysis.

Download or read book Geological Survey of Canada Open File 2164 written by and published by Natural Resources Canada. This book was released on with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Union List of Geologic Field Trip Guidebooks of North America written by Richard A. Spohn and published by . This book was released on 1996 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineralogy written by Huang Yunhui and published by VSP. This book was released on 1998 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of papers presented in the 30th International Geological Congress, held in Beijing, on mineralogy. The papers deal with topics on fine structures and crystallographic orientations in biogenic magnetite and thermodynamic properties of minerals.

Download or read book Field Trip Guidebooks written by and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summary of Field Work and Other Activities written by and published by . This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summary of Field Work and Other Activities 1993 written by Ontario Geological Survey and published by . This book was released on 1993 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Regional Structural Model for Gold Mineralization in the Southern Part of the Archean Superior Province United States written by Paul Kibler Sims and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Canadian segment of the Archean Superior province is a major world source of lode gold. The gold deposits occur in or near regional transcurrent and oblique slip-shear deformation zones that comprise a conjugate set to a northwest- directed compression of the Superior province. These structures provided permeable pathways for the flow of large volumes of auriferous fluid derived from an external source. Historic gold production from the United States segment of the Superior province is modest, but the close similarity in the geologic environment of the United States and Canadian segments suggests that large gold deposits should be present in the U.S.A. An occurrence model largely based on known parameters of gold mineralization in Canada suggests that the greenstone-granite terranes of the Wawa and Wabigoon sub-provinces in the United States are favorable for important gold deposits. The model suggests that gold mineralization took place during or later than the transcurrent faulting and that it took place contemporaneously with emplacement of silica-undersaturated intrusions. The faulting occurred late in the igneous-tectonic history of the Superior province, about 2,690 Ma. Extensive, intense alteration comprising carbonitization, silicification, and sulfidization accompanied the gold mineralization. The relationships between alteration minerals and mineralized veins suggest a close temporal relationship between the alteration and gold mineralization processes. The proposed occurrence model for gold mineralization and the available data suggest that two broad regions of greenstone in the Archean Superior province in north-central United States are particularly favorable for gold deposits: (1) the Upper Peninsula of Michigan, and (2) northeastern Minnesota. The Ishpeming greenstone belt of the Wawa subprovince in Michigan contains the important Ropes deposit and several other known gold occurrences, and the Vermilion district (Wawa subprovince) in northeastern Minnesota contains highly anomalous gold in soils and minor known bedrock occurrences. Transcurrent faults in both areas should be favorable sites for gold mineralization

Download or read book Summary of Field Work and Other Activities 1988 written by Ontario Geological Survey and published by . This book was released on 1988 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ontario Geological Survey Miscellaneous Paper written by and published by . This book was released on 1993 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Paper Ontario Geological Survey written by Ontario Geological Survey and published by . This book was released on 1986 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: