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Porcupine gold district

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Journal Article
Journal: Economic Geology
Published: 01 May 1952
Economic Geology (1952) 47 (3): 260-304.
... of about three miles and a depth of over 5,000 feet, and one of the major deposits in the Porcupine gold district, Ontario, to a depth of 5,375 feet.The studies included conventional direct current arc methods using different techniques, but standardized conditions for samples from individual deposits...
Journal Article
Journal: Economic Geology
Published: 01 September 2008
Economic Geology (2008) 103 (6): 1341-1363.
...Etienne Dinel; Anthony D. Fowler; John Ayer; Alastair Still; Ken Tylee; Erik Barr Abstract The Hoyle Pond gold deposit is hosted in complexly deformed mafic-ultramafic volcanic rocks of the Hersey Lake and Central Formations (Tisdale assemblage) in the Porcupine gold camp, located approximately 15...
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Journal Article
Journal: Economic Geology
Published: 01 May 2001
Economic Geology (2001) 96 (3): 453-475.
...Matthew D. Gray; Richard W. Hutchinson Abstract The Porcupine mining district is the largest lode gold-producing district in North America, with production in excess of 62,000,000 troy oz. Nearly all of the Au has come from quartz-carbonate lode systems hosted by metamorphic rocks of greenschist...
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Journal Article
Published: 01 September 1989
The Canadian Mineralogist (1989) 27 (3): 419-426.
Journal Article
Journal: Economic Geology
Published: 01 August 1913
Economic Geology (1913) 8 (5): 482-488.
Series: Society of Economic Geologists
Published: 01 January 2017
DOI: 10.5382/Rev.19.02
EISBN: 9781629491172
... ). The 99 massive flow has yielded a U-Pb zircon age of 2707 ± 3 Ma. This age overlaps with that of the 2708 ± 2 Ma Hersey Lake Formation, and thus suggests that the Tisdale assemblage was formed over a duration of a few million years ( Ayer et al., 2002a ). The bulk of the gold in the Timmins-Porcupine...
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Journal Article
Journal: Economic Geology
Published: 01 September 1936
Economic Geology (1936) 31 (6): 600-609.
Journal Article
Journal: Economic Geology
Published: 01 September 2008
Economic Geology (2008) 103 (6): 1285-1308.
...Roger Bateman; J. A. Ayer; B. Dubé Abstract New structural and geochronological data and interpretations from the Timmins-Porcupine gold camp, Abitibi subprovince, more precisely define the stratigraphy and the generation, timing, and effects of deformation. Tisdale (basalts) and Porcupine...
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Journal Article
Published: 21 November 2018
Canadian Journal of Earth Sciences (2019) 56 (4): 399-418.
... there were two separate gold mineralization events in the Timmins–Porcupine camp: an early porphyry-related Cu–Au event (i.e., magmatic–hydrothermal) followed by a younger, structural event (i.e., orogenic) that was responsible for the bulk of the gold mineralization in the district. Corresponding...
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Series: Economic Geology Monograph Series
Published: 01 January 1989
DOI: 10.5382/Mono.06.08
EISBN: 9781629490014
... Abstract The Dome mine, in the Porcupine district of the Abitibi greenstone belt, has produced about 360 metric tons of gold from a variety of ore types in a block of ground 2.5 km long, 1.2 km wide, and 1.4 km deep. The ore zones are hosted in regionally metamorphosed, greenschist facies...
Journal Article
Journal: Economic Geology
Published: 01 September 1939
Economic Geology (1939) 34 (6): 622-653.
...Ellsworth Young Dougherty Abstract This paper is a comparative study of certain geological features of three of the world's important pre-Cambrian gold-quartz producing districts. Special interest is given to the study because of the productivity and depth persistence of the ore deposits. Features...
Journal Article
Journal: Economic Geology
Published: 01 November 2014
Economic Geology (2014) 109 (7): 2035-2050.
... Porcupine Volcanics dome underlying the mine district. Not only would caldera heat have warmed the brine and lowered its density, but more importantly it would have produced a remarkable decrease in the brine viscosity. An increase in temperature from 15° to 100°C could have increased the brine infiltration...
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Series: Reviews in Economic Geology
Published: 01 January 2000
DOI: 10.5382/Rev.13.01
EISBN: 9781629490205
... proximity of world-class lode gold deposits to “crustal-scale” deformation zones (e.g., Boulder-Lefroy, Destor-Porcupine). Linking of active faults is important for fluid focusing and effective transport of hydrothermal fluids. The hydrothermal fluids transport gold along the pathways as one or more neutral...
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Journal Article
Published: 01 March 1979
Canadian Journal of Earth Sciences (1979) 16 (3): 440-458.
...R. Kerrich; B. J. Fryer Abstract The Porcupine District, Abitibi Greenstone Belt, is one of the most extensive areas of Archaean auriferous mineralisation. At least two stages of lode-gold emplacement are recognised: the first stage involves gold-bearing carbonate–chert chemical sediments within...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1966
AAPG Bulletin (1966) 50 (9): 1868-1889.
.... Survey Canada Map 10-1963, scale 1:1,000,000 . Payne , T. G. , 1955 , Mesozoic and Cenozoic tectonic elements of Alaska : U. S. Geol. Survey Misc. Geol. Inv. Map I-84 . Spurr , J. E. , 1898 , The geology of the Yukon gold district, Alaska : U. S. Geol. Survey 18th Ann. Rept., pt...
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Journal Article
Published: 01 June 1946
American Mineralogist (1946) 31 (5-6): 313-316.
...J. K. Gustafson Abstract Chloritoid occurs as a hydrothermal alteration mineral in pre-Cambrian lavas in the Porcupine district, Ontario, and Kalgoorlie district, Western Australia, and as a vein mineral in occasional quartz veins in the Porcupine district. These occurrences contradict geologic...
Series: Society of Economic Geologists
Published: 01 January 1991
DOI: 10.5382/GB.11
EISBN: 9781934969649
... Abstract The Matachewan-Kirkland Lake-Larder Lake gold-copper-ironasbestos-barite mining district is situated in Late Archean rocks of the Canadian Precambrian Shield’s Superior Province, -Abitibi sub-province, southwestern part. The structural setting seems to be comparable to Nevada’s Carlin...
Series: Reviews in Economic Geology
Published: 01 January 2001
DOI: 10.5382/Rev.14.05
EISBN: 9781629490212
... ). Greenstone gold districts and deposits occur along crustal-scale, first-order fault zones at boundaries between contrasting lithological domains (e.g., Eisenlohr et al., 1989 ; Hodgson, 1993 ). Examples include the Boulder-Lefroy fault in Western Australia, the Porcupine-Destor and Larder Lake-Cadillac...
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Journal Article
Journal: Economic Geology
Published: 01 January 2003
Economic Geology (2003) 98 (1): 1-29.
... intrusion-related deposits appear to be best distinguished by their near-craton setting, in locations more distal from subduction zones than most orogenic gold deposits and in provinces that also commonly contain Sn and/or W deposits; relatively low gold grades ( < 1–2 g/t Au); and district-scale zoning...
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Series: Economic Geology
Published: 01 January 2005
DOI: 10.5382/AV100.14
EISBN: 9781934969519
... of gold deposits in the same environments. Although possessing an argentiferous base metal-rich metallogeny, Neoproterozoic through Mesozoic vein systems in districts such as Coeur d’Alene, Idaho; Kokanee Range, British Columbia; Cobar, NSW; and Harz Mountains, Germany, occur in metamorphic belts, were...