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:
MDI52K13NW00003
| Record Name(s) | Derlak Red Lake - 1983, Oaks - 1983 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1983-Mar-04 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Heyson
Latitude: 50° 59' 8.89" Longitude: -93° 53' 19.84"
UTM Zone: 15 Easting: 437611.596 Northing: 5648622.014 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52K13NW
Point Location Description: N/A
Location Method: Conversion from MDI
Derlak Red Lake Gold Mines Ltd. wa incorporated in 1936 and took over a claim group that formerly was called the Oaks Property. In 1943 an agreement was made with central Patricia Gold MInes Ltd., and this company obtained the right to provide funds to patent the claims and develop the property. Around 1967 Madsen Red Lake Gold MInes drilled the property looking for an extension to their orebody. From 1936 to 1937, surface work, a mag survey and diamond drilling were completed. Nine holes were drilled totalling 518.5 m. In 1944, Central Patricia completed a geolgical survey and drilled 8 holes totalling 1557 m. In 1967, Madsen Red Lake Gold Mines drilled 10 holes, totalling 943 m. The diamond driling complteted in 1937 returned assays ranging from 0.028 oz/ ton (0.95 g/tonne) Au to 0.05 oz/ton (1.71 g/tonne) Au. from 3 holes accross 1.5 m. In 1967 several assays ranging between 0.06 (2.06 g/tonne) Au and 0.08 oz/ton (2.74 g/toone) Au. accross 1.5 m. The best Assay obtained was 0.12 oz/tonne (4.11 g/tonne).
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: U. Greenschist
Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The claims are pricipally underlain by mafic volcanixs which strike E-NE and dip steeply to the S. NE trending dikes of qtz porphyry and hornblende diorite have also been observed. Gold mineralization occurs in shear zones in mafic volcanics. The mafic volcanic rocks in the mineralized shear zones are comprised of biotite, garnet, chlorite and carbonate. A few quartz veins as well as minor amounts of disseminated pyrite, pyrrhotite and chalcopyrite are present in the altered and deformed mafic flows. DEPOSIT DESCRIPTION: The mineralized zones on this property are very similar to those in the Madsen Mine a few km. the the SW. The prospect appears to be in a similar geological environment as the Madsen ore deposit. Anomalous gold values were found in altered and deformed mafic metavolcanics close to and along the contact with a quartz-feldspar porphyry dike. Pyrite and pyrrhotite appear to be closely associated with the gold mineralization. Small quartz-carbonate zones in the metavolcanics are also auriferous. GEOCHEMICAL DATA: Sodium depletion and CO2 enrichment. GEOPHYSICAL DATA: The MAG survey delineated an anomalous zone cutting throug the centre of claim KRL 12751 in a SW-NE direction.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Unsubdivided | Altered | Adjacent |
|---|---|---|---|---|
| Mylonite/Fault Gouge/Pseudotachylite | 2 | Mafic Volcanics | Shear Zone | Host |
| Quartz-Feldspar Porphyry | 3 | Quartz And Quartz-Feldspar | Porphyritic | Intrudes |
| Vein | 4 | Quartz | Host |
Dec 07, 2005 (K R Kettles) - The claims are pricipally underlain by mafic volcanixs which strike E-NE and dip steeply to the S. NE trending dikes of qtz porphyry and hornblende diorite have also been observed. Gold mineralization occurs in shear zones in mafic volcanics. The mafic volcanic rocks in the mineralized shear zones are comprised of biotite, garnet, chlorite and carbonate. A few quartz veins as well as minor amounts of disseminated pyrite, pyrrhotite and chalcopyrite are present in the altered and deformed mafic flows. The prospect appears to be in a similar geological environment as the Madsen ore deposit. Anomalous gold values were found in altered and deformed mafic metavolcanics close to and along the contact with a quartz-feldspar porphyry dike. Pyrite and pyrrhotite appear to be closely associated with the gold mineralization. Small quartz-carbonate zones in the metavolcanics are also auriferous.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Chlorite | Economic | Gangue | ||||
| 3 | Biotite | Economic | Gangue | ||||
| 4 | Garnet | Economic | Gangue | ||||
| 5 | Carbonate | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Medium | Replacement | ||
| Carbonate | Alteration | Carbonatization | 2 | Medium | Replacement |
Dec 07, 2005 (K R Kettles) - Gold mineralization occurs in shear zones in mafic volcanics. The mafic volcanic rocks in the mineralized shear zones are comprised of biotite, garnet, chlorite and carbonate. A few quartz veins as well as minor amounts of disseminated pyrite, pyrrhotite and chalcopyrite are present in the altered and deformed mafic flows. The prospect appears to be in a similar geological environment as the Madsen ore deposit. Anomalous gold values were found in altered and deformed mafic metavolcanics close to and along the contact with a quartz-feldspar porphyry dike. Pyrite and pyrrhotite appear to be closely associated with the gold mineralization. Small quartz-carbonate zones in the metavolcanics are also auriferous. MDI 1 DATA: GRADE 1937 - 3 DDH'S: 0.028-0.05 OPT AU / 1.5 M, GRADE 1967 - DDH: SEVERAL ASSAYS: 0.06-0.08 OPT AU/1.5 M, BEST:0.12 OPT AU/1.5 M The diamond driling complteted in 1937 returned assays ranging from 0.028 oz/ ton (0.95 g/tonne) Au to 0.05 oz/ton (1.71 g/tonne) Au. from 3 holes accross 1.5 m. In 1967 several assays ranging between 0.06 (2.06 g/tonne) Au and 0.08 oz/ton (2.74 g/toone) Au. accross 1.5 m. The best Assay obtained was 0.12 oz/tonne (4.11 g/tonne).
Dec 07, 2005 (K R Kettles) - The altered and deformed mafic volcanics have been variable silicified and carbonatized and depleted in Na02 and enriched in C02.
File - Resident Geologist files AF RL 1937-67 Heyson #3
Publication Number: AF RL 1937 Date: 1937
Author:
Publisher Name:
Location: Red Lake RGP
Part - Geology and mineral deposits of the Red Lake area
Publication Number: ARV49-02 Page: 101-102 Date: 1998
Author: Horwood H.C.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the northern part of Heyson Township, District of Kenora
Publication Number: R056 Page: 38-39 Date: 1968
Author: Ferguson S.A.
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: 223 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Page: 534-535 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
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 Red Lake Resident Geologist District Office