GeologyOntario has moved. You will be redirected to the new site in 10 seconds. If you are not immediately redirected please follow the below link to the new GeologyOntario platform. For assistance please contact us.
Ontario Geological Survey
Permanent Link to this Record:
MDI42A08NW00151
Record Name(s) | Devil's Elbow - South - 1966, Pollock - Briscoe Occurrence - 1966 |
---|---|
Related Record Type | Simple |
Related Record(s) | |
Record Status | Occurrence |
Date Created | 1992-Mar-05 |
Date Last Modified | 2023-Jan-23 |
Created By | |
Revised By |
Primary Commodities: Gold, Zinc
Secondary Commodities: Copper, Lead
Township or Area: Bowman
Latitude: 48° 28' 22.1" Longitude: -80° 29' 20.92"
UTM Zone: 17 Easting: 537758.02 Northing: 5368978.73 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A08NW
Point Location Description: Pits
Location Method: Data Compilation
Access Description: Access to within a few hundred metres of pits exposing sulfide mineralization associated with chlorite schist in the north half of lot 7, concession II, Bowman Township may be made via a gravel road from Matheson. The remaining distance must be traversed by foot through openly wooded but rugged terrain. The approximate location of the pits is indicated by Leahy (1965) and Jensen (1985).
1915: Free gold is reported to have been discovered in the south half of lots 6 and 7, concession 2, Bowman Township (The Northern Miner, December 11, 1915). 1947: Three holes were diamond drilled beneath a surface occurrence of chalcopyrite hosted by porphyry. 1956-1958: Sylvanite Gold Mines Ltd.- trenching, sampling, DD-3-711 ft. 1966: Devil's Elbow Mines Ltd.- EM, magnetometer surveys, DD-4-1504 ft., assays. 1970: E. Foster- trenching. 1973-1975: Driftex Ltd.- EM, Mag, HLEM surveys, mapping. 1981: Prospection Ltd.- ground magnetomer, HLEM, VLF-EM, DD-1-388 ft. 1986: Placer Development Ltd. - mapping, sampling, ground geophysics (magnetics, EM, HLEM).
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
---|---|---|
KL-0666/10 | 42A08NW0121 | 42A08NW0121 |
KL-0728/ 2.1652 | 42A08NW0114 | 42A08NW0114 |
KL-0728/ 2.1447 | 42A08NW0117 | 42A08NW0117 |
KL-0877/ W7108-126 | 42A09SW5183 | 42A09SW5183 |
2.9870 | 42A08NW0102 | 42A08NW0102 |
KL-0728/ 2.2013 | 42A08NW0112 | 42A08NW0112 |
KL-0666/63.2035 | 42A08NW0118 | 42A08NW0118 |
KL-0877/W7108-127 | 42A09SW5182 | 42A09SW5182 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean
Dec 15, 2015 (D Guidon) - Geological mapping indicates that bedrock in the area consists mainly of weakly metamorphosed (greenschist or lower metamorphic facies) intermediate to mafic subaqueously deposited tholeiitic volcanic rocks and minor intercalated interflow tuffaceous and/or sedimentary rocks of the (Archean) Kinojevis Group. Local bedrock stratigraphy is east southeast striking, steeply dipping, south facing, and occupies part of the north limb of the east striking and east plunging Blake River Synclinorium. Intrusive rocks near the sulfide occurrence include a felsic granodioritic batholith (the northern contact of which is about 1.2 km southwest of the trenches) and ubiquitous narrow (generally tens of metres in width) north northeast striking diabase dikes of the (Proterozoic) Matachewan swarm, which intrude both Kinojevis Group rocks and the felsic batholith. A recent geophysical survey of Bowman Township failed to detect any significant bedrock conductors to occur in the area of known sulfide mineralization.
Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Fe Dolomotized | Hanging Wall |
---|---|---|---|---|
Schist-Unsubdivided | 2 | Chlorite-Amphibole-Carbonate | Host | |
Sandstone | 3 | Wacke | Footwall |
Dec 15, 2015 (D Guidon) - Mineralization exposed in a shallow trench blasted into bedrock near the north edge of an outcrop mass in the north half of lot 7, concession 2, Bowman Township consists of variably sheared pyritic and pyrrhotitic(?) chlorite-amphibole-carbonate schist. The 2 m wide rusty weathering schist strikes 100, dips irregularly north at an average angle of about 55 º. Angular, brecciated pyrrhotite(?) and fine grained disseminated to 2 cm size idioblastic pyrite cubes occur within the chlorite-carbonate schist and within an undulose, marginal, and less intensely sheared 25-35 cm wide zone of Fe-dolomitized leucoxenitic basalt (to the north) and wacke (to the south). The presence of cherty and clastic detrital sedimentary horizons within the schist indicates that the shear was developed within an interflow sedimentary and/or tuffaceous sedimentary horizon, with only minor shearing developed in marginal (now leucoxenitic) basalt. Shearing resulted in recrystallization of the sulfide component, with later hydrothermal fluids causing carbonatization (as Fe-dolomite and calcite).
Dec 15, 2015 (A Wilson) - ) A 6.9 foot long trench chip sample is reported to have averaged 1.8% copper, another chip sample is reported to have averaged 0.6% copper along 5.6 feet and additional (grab?) samples assaying as much as 11.42% copper, 6.21% lead, 4.31% zinc and 0.6 ounce of silver per ton are reported. One drill hole is reported to have intersected material which averaged 0.5% copper along a 4 foot core length.
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
---|---|---|---|---|---|---|---|
1 | Chalcopyrite | Economic | Ore | ||||
2 | Pyrrhotite | Economic | Ore | ||||
3 | Sphalerite | Economic | Ore | ||||
4 | Galena | Economic | Ore | ||||
8 | Pyrite | Economic | Ore | ||||
1 | Quartz | Economic | Gangue | ||||
2 | Hematite | Economic | Gangue | ||||
5 | Epidote | Economic | Gangue | ||||
6 | Chlorite | Economic | Gangue | ||||
7 | Calcite | Economic | Gangue | ||||
Dolomite | Alteration | Carbonatization | 1 | Medium | Disseminated |
Dec 15, 2015 (D Guidon) - Information in the assessment files, indicates that in the southeast quarter of the north half of lot 7, concession 2, Bowman Township, a series of pits exposes splashes of massive chalcopyrite hosted by a conformable horizon of grey feldspar porphyry. Geological mapping by Driftex Ltd. indicates that the porphyry is mappable along 1,800 feet of strike, that it ranges from 20-100 feet in thickness, and that it is a conformable tuffaceous horizon which strikes 105º and dips 80º north (contrary to well established regional trends as delineated by Leahy and Jensen. Sulfide mineralization is described to consist of disseminated chalcopyrite splashes and sphalerite in the feldspar tuff; of stringers and disseminations of chalcopyrite, sphalerite and galena along bedding planes and confined to fractures within thinly bedded tuff near the southern tuff contact; and of as much as 25% of nodular pyrite in tuff. This drilling is reported to have intersected a 10 and 2 foot core length each of which averaged 0.5% copper, with additional associated anomalously elevated lead, zinc and silver values. A 2 foot section of the 10 foot core section is reported to have averaged 1.17 oz./t Au.
Dec 15, 2015 (A Wilson) - Samples collected in 1986 by Placer Development returned values up to 2270 ppb Au in a quartz vein.
Rank | Characteristic |
---|---|
1 | Disseminated |
File - Resident Geologist files KL-2273, KL-2307, KL-2604
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Page: 60-70 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Currie and Bowman townships, District of Cochrane
Publication Number: R040 Page: 18 Date: 1997
Author: Leahy E.J.
Publisher Name: Ontario Dept. of Mines
Location:
Folio - Bowman Township, District of Cochrane
Publication Number: GDIF271 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location: Kirkland Lake RGP office
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 131 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology of the Highway 101 Area, East of Matheson, Ontario
Publication Number: M2676 Scale: 1:50,000 Date: 2003
Author: Berger B.R., Luinstra B., Ropchan J.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt
Publication Number: P3398 Scale: 1:100,000 Date: 1999
Author: Ayer J.A., Berger B.R., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office