Ontario Geological Survey
Permanent Link to this Record:
MDI52N04NE00010
| Record Name(s) | Dewson Mines Ltd. - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1991-Mar-13 |
| Date Last Modified | 2022-Jun-28 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Bateman
Latitude: 51° 11' 9.35" Longitude: -93° 40' 52.59"
UTM Zone: 15 Easting: 452386.72 Northing: 5670722.033 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04NE
Point Location Description: Centre DDH of 4 just north of property symbol 12 map P.1569
Location Method: Conversion from MDI
1948: The property was held by Dewson Mines Ltd. who drilled 4 diamond drill holes for a total of 611.53 m.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Amphibolite
Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The area is underlain by mafic metavolcanic flows. These flow units are massive to foliated, strike just north of east, and dip at approximately 65 deg. to the south. A thin lense of garnitiferous metagreywacke occurs within the metavolcanics. This unit contains a thin, discontinuous dike of feldspar porphyry, which has been fractured and silicified. The feldspar porphyry dike is slightly auriferous. DEPOSIT DESCRIPTION: Diamond drill hole number 1 intersected a 2.75 m wide feldspar porphyry dike which contains anomalous values of gold.
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Greywacke | Adjacent |
|---|---|---|---|---|
| Feldspar Porphyry | 2 | Feldspar | Porphyry | Host |
| Mafic lava flow-unsubdivided | 3 | Flows | Adjacent |
Dec 07, 2005 (K R Kettles) - The area is underlain by mafic metavolcanic flows. These flow units are massive to foliated, strike just north of east, and dip at approximately 65 deg. to the south. A thin lense of garnitiferous metagreywacke occurs within the metavolcanics. This unit contains a thin, discontinuous dike of feldspar porphyry, which has been fractured and silicified. The feldspar porphyry dike is slightly auriferous.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Marcasite | Economic | Ore | ||||
| 4 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Biotite | Alteration | Biotitic | 1 | ||||
| Garnet | Alteration | Unknown | 2 | ||||
| Quartz | Alteration | Silicification | 3 | ||||
| Carbonate | Alteration | Carbonatization | 4 | ||||
| Epidote | Alteration | Epidotization | 5 |
Dec 07, 2005 (K R Kettles) - MDI1 DATA: GRADE 1948 DDH#1: AVE. OF 0.025 OPT AU FROM 15.71M TO 18.76M(0.03/5' + 0.02/5'), GRADE 1987 1 DDH TO SOUTH: NO ASSAYS AVAILABLE Drill hole number 1 was the only hole to return gold assays. From 15.71 m to 18.76 m, an average of 0.025 oz/ton (0.857 g/tonne)Au was obtained.
Dec 07, 2005 (K R Kettles) - Both the metasedimentary and metavolcanic units are biotite-rich and garnitiferous. The metavolcanics have been silicified and carbonatized and epidote occurs close to diorite intrusions. The feldspar porphyry unit has been silicified.
File - Resident Geologist files AF RL 1948 Bateman #2
Publication Number: AF RL 1948 Date: 1948
Author: Stanford, R.A.
Publisher Name:
Location: Red Lake RGP
Map - Geological series, Bateman Township, District of Kenora (Patricia Portion)
Publication Number: P1569A Scale: 1:12,000 Date: 1978
Author: Pirie J., Grant A.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist files AF RL 1986 Bateman #73, 78
Publication Number: AF RL 1986 Date: 1986
Author:
Publisher Name:
Location: Red Lake RGP
File - Resident Geologist files AF RL 1987 Bateman #79, 82
Publication Number: AF RL 1987 Date: 1987
Author:
Publisher Name:
Location: Red Lake RGP
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Page: 296-297 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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