Ontario Geological Survey
Permanent Link to this Record:
MDI52E11NE00056
| Record Name(s) | Electrum A,B,C,D Zones - 1980, Electrum Lake - 1980, Contact Zone - 9999 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1980-Jul-30 |
| Date Last Modified | 2022-May-11 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Copper
Township or Area: Ewart
Latitude: 49° 42' 54.01" Longitude: -95° 6' 14.85"
UTM Zone: 15 Easting: 348319.62 Northing: 5509069.25 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E11NE
Point Location Description: Cu, Au symbol in SE corner of claim K23943 and Au symbol in SW corner of claim K23942
Location Method: Conversion from MDI
Access Description: The occurrence can be accessed by travelling 2.8 km south of the junction of the Shoal Lake Road and Highway 17 to the High Lake Road. Take the High Lake Road west to the gate. The prospect is located 500m southwest of the western shore of Electrum Lake. The area may be reached via a trail leading north from High Lake.
1953: R. Longe discovered gold on the B Zone. San Antonio Gold Mines optioned the property and conducted geological and geophysical survey and drilled 1857 m of DD in 24 holes, including 6 holes totalling 1211 ft on the B Zone and 4 holes totalling 980 ft on the C Zone. San Antonio dropped their option at the end of the year. 1956-58: Green Bay Mines Ltd. drilled 605 m of DD in 6 holes, including 1 hole on the A Zone. 1958-61: Electrum Lake Gold Mines Ltd. conducted trenching, stripping, geological and geophysical surveys and drilled 3951 m of DD in 71 holes, including 13 holes totalling 4036 ft on the A Zone, 18 holes totalling 3471 ft on the B Zone, and 7 holes totalling 1111 ft on the C Zone. Electrum dropped their option in 1961. 1965-66: geological and geophysical surveys. 312 m of DD in 3 holes. 1981-82: Sherritt Gordon Mines Ltd. optioned two claims and conducted stripping, trenching, sampling, geological and geophysical surveys and drilled 380 m of DD in 6 holes on the C Zone. Sherritt dropped their option in 1982. 1983-88: Barrier Reef Resources Ltd. optioned the property and conducted trenching and sampling, geological, geophysical and geochemical surveys and drilled 2365 m of DD in 22 holes. 1984: Barrier assigned its rights in the High Lake Property to a subsidiary company Francis Resources Ltd. 1985: Francis Resources was merged with Northcal Resources Ltd. to form Calnor Resources Ltd. 1986: Calnor Resources Ltd. drilled 22 DDH totalling 7594 ft (4 DDH totalling 1025 ft on the C Zone). 1987: Laramide Service Corp. conducted a trenching, mapping and sampling program. 2006: mining lease owned by Canadian Star Minerals Ltd. 2011: Canadian Star transferred the adjacent claims to International Millennium Mining Corp.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.5114 | 52E11NE9032 | 52E11NE9032 |
| 63.1996 | 52E11NE9069 | 52E11NE9069 |
| 33 | 52E11NE9222 | 52E11NE9222 |
| 10 | 52E11NE9080 | 52E11NE9080 |
| 63.6038 | 52E11NE9300 | 52E11NE9300 |
Province: Superior
Subprovince: Wabigoon
Belt: Lake of the Woods
Geological Age: Precambrian Geochronological Age: 2.728GA Geochron. Age Ref.: SMITH, 1987
Dec 07, 2005 (P Hinz) - The area is underlain by the High Lake porphyritic granodiorite stock, which intrudes Archean mafic metavolcanic rocks. The stock has been interpreted to be two intrusive phases (Davies 1965, Colvine 1979). 'Archean mafic metavolcanic flows have been intruded by porphyritic granodiorite and associated quartz and feldpsar porphyry dikes. Lower to upper amphibolite facies metamorphism prevailed during intrusion, but lower grade mineral assemblages occur in fault zones. Davies (1965, p.40) stated, 'Basic lavas, probabaly all basaltic, have been recrystallized to massive hornblende-rich hornfelses. These in places are veined by carbonate, quartz and epidote, and in places are sheared. Biotite is abundant in the more schistose phases. Evidence of original pillows can be seen.' Numerous east-trending, quartz and feldspar porphyry dikes extend east from the intrusion. Large blocks of mafic metavolcanic rocks are enclosed by the dikes and can be considered as inclusions in the porphyry. Such is the case at the Electrum A, B, C, and D zones, where the mineralized zones are proximal to the basalt-porphyry contacts.' (Davies and Smith, 1988)'.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Adjacent |
|---|---|---|---|---|
| Mylonite/Fault Gouge/Pseudotachylite | 2 | Hornblende-Biotite Schist | Shear Zone | Contains |
| Granodiorite | 3 | Porphyritic | Adjacent |
Mar 10, 2015 (Therese Pettigrew) - Central zone of volcanics flanked by porphyry, with some interfingering of volcanics and porphyry. The mineralization is almost all confined to the volcanics, with the best grade material being along section 4100 East along a contact with the south-flanking porphyry (AFRI 52E11NE9032).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore | ||||
| Carbonate | Alteration | Carbonatization | 1 | Unknown | Disseminated | ||
| Chlorite | Alteration | Chloritic | 2 | Unknown | Disseminated | ||
| Epidote | Alteration | Epidotization | 3 | Unknown | Disseminated | ||
| Sericite | Alteration | Sericitization | 4 | Unknown | Disseminated | ||
| Silica | Alteration | Silicification | 5 | Unknown | Disseminated |
Dec 07, 2005 (P Hinz) - In all 4 zones, there is an apparent spatial relationship between the magnetic highs, porphyry-basalt contacts and gold mineralization. Mineralization appears to be associated with quartz veins, shear zones, and sulphides. Whether the mineralization is exhalative, as postulated by Forsgren (1982), or is hydrothermally controlled, is unknown. The gold seems to be located in zones of increased permeability, indicating epigenetic fluid migration. (Davies and Smith, 1988)
Mar 10, 2015 (C Ravnaas) - 1953 drilling best intersections assayed: 3.42% Cu over 1.0m; 2.28% Cu over 0.3m; and 1.14% Cu over 1.5 m. Mineralization included py, cpy, asp, mo and po. 1958 drilling best intersections assayed: 8.76% Cu over 0.6m; 4.38% Cu over 1.2m; 1.78% Cu over 4.3 m. Mineralization included py, po, cpy and visible gold. 1965 drilling best intersection assayed 0.22% Cu over 1.8 m. Mineralization included py and cpy.
Mar 10, 2015 (Therese Pettigrew) - A Zone assays include the following: E-1: 0.12 opt Au from 195.0-197.0 ft and 0.94 opt Au from 219.3-231.4 ft;E-2: 1.94 opt Au from 155.2-156.7 ft; E-6: 0.42 opt Au from 245.6-247.2 ft; E-7: 0.175 opt Au from 60.2-63.3 ft and 0.127 opt Au from 81.0-94.3 ft; E-28: 0.095 opt Au from 136.4-149.5 ft; 0.39 opt Au from 182.4-184.3 ft, 0.089 opt Au from 191.1-198.6 ft, and 0.116 opt Au from 249.0-264.8 ft; E-30: 0.14 opt Au from 349.6-352.6 ft, 0.213 opt Au from 403.0-412.8 ft, and 0.17 opt Au from 453.5-458.3 ft. The best mineralization is mainly confined to the volcanics and occurs along a contact between the volcanics and porphyry (AFRI 52E11NE9032). B Zone assays range from 0.045 to 0.641 opt Au and include the following: SA-10: 0.19 opt Au from 152.8-156.0 ft; E-11: 0.36 opt Au from 47.0-49.0 ft; E-13: 0.641 opt Au from 117.0-141.0 ft; E-15: 0.045 opt Au from 127.0-130.6 ft; and E-22: 0.24 opt Au from 303-306 ft. The best mineralization occurs in both rock types along a contact zone between volcanics and porphyry (AFRI 52E11NE9032). C Zone assays range from 0.08 to 3.51 opt Au and including the following: SA-6: 0.080 opt Au from 75-80 ft; SA-8: 0.38 opt Au from 172.3-176.6 ft; E-36: 0.15 opt from 45.8-46.7 ft and 3.510 opt from 50.3-55.5 ft; 0.449 opt Au from 59.5-61 ft; SG-3: 0.961 opt Au from 45-51 ft; SG-5: 0.072 opt Au from 121-127 ft; SG-6: 1.48 opt Au from 155-156 ft. Mineralization is confined to the volcanics and trends away from the contact with the porphyry (AFRI 52E11NE9032). Pyrite always accompanies the gold mineralization, though sulphide content is not a good guide to gold content and some pyrite-bearing rock contains little or no gold. Typically, within the volcanic rocks the best mineralization occurs in zones with narrow bands and lenses of massive pyrite, often with significant amounts of chalcopyrite. In the porphyry, on the other hand, high-grade mineralization is often associated with only minor amounts of pyrite (AFRI 52E11NE9032).
Mar 10, 2015 (Therese Pettigrew) - The well-mineralized rocks are always strongly altered. In the volcanics the alteration consists of carbonate and quartz-carbonate veining, chloritization and epidotization. In the porphyry the alteration consists of sericitization and silicification, which is often accompanied by vein quartz in irregular masses and lenses together with varying amounts of black tourmaline (AFRI 52E11NE9032).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| A Zone | 1987 | Unclassified | 11308 | AFRI 52E11NE9032, p. 21 | average width of 8.27 feet using a tonnage factor of 11.50 cubic feet per ton | Gold 0.26 Ounce per Ton |
| B Zone | 1987 | Unclassified | 25815 | AFRI 52E11NE9032, p. 21 | average width of 6.26 feet using a tonnage factor of 11.50 cubic feet per ton | Gold 0.29 Ounce per Ton |
| R Zone | 1987 | Unclassified | 25000 | AFRI 52E11NE9032, p. 21 | average width of 11.8 feet using a tonnage factor of 11.50 cubic feet per ton | Gold 0.46 Ounce per Ton |
| Electrum A, B, C, P, R and W Zones | 1987 | Unclassified | 100005 | AFRI 52E11NE9032, p. 21 | average width of 8.73 feet | Gold 0.33 Ounce per Ton |
| C Zone | 1987 | Unclassified | 15390 | AFRI 52E11NE9032, p. 21 | average width of 4.88 feet using a tonnage factor of 11.50 cubic feet per ton | Gold 0.43 Ounce per Ton |
Map - Ewart-Forgie area, Kenora District
Publication Number: M2069 Scale: 1:31,680 Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
Location:
Book - George Cross Newsletter 83-07-21, Barrier
Publication Number: G Cross News Page: 1 Date: 1983
Author:
Publisher Name:
Location:
Book - George Cross Newsletter 83-08-09, Barrier
Publication Number: G Cross News Page: 2 Date: 1983
Author:
Publisher Name:
Location:
Book - George Cross Newsletter 83-09-23, Barrier
Publication Number: G Cross News Date: 1983
Author:
Publisher Name:
Location:
Book - George Cross Newsletter 85-05-10, Nothcal
Publication Number: G Cross News Page: 2 Date: 1985
Author:
Publisher Name:
Location:
Book - Northern Miner 83-08-11, Barrier
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Book - Northern Miner 83-08-13, Barrier
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Book - Northern Miner 84-05-03, Barrier Reef
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
MonoMap - Geology of High Lake-Rush Bay area, District of Kenora
Publication Number: R041 Page: 15, 40-42 Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Page: 142-143 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Page: 15 Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Location:
Mono - The geological setting of gold occurrences in the Lake of the Woods area
Publication Number: OFR5695 Page: 101-105 Date: 1988
Author: Davies J.C., Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
File - Mineral Deposit Files Kenora
Publication Number: Date:
Author:
Publisher Name:
Location:
Map - Precambrian Geology of the Lake of the Woods Area-North Sheet
Publication Number: P2675 Scale: 1:50,000 Date: 2009
Author: Ayer J.A.
Publisher Name: Ontario Geological Survey
Location:
Article - Geology of the High Lake area, Ewart Township, District of Kenora
Publication Number: MP137.010 Date: 1997
Author: Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
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