Ontario Geological Survey
Permanent Link to this Record:
MDI52N04SW00087
| Record Name(s) | Grompo #2 - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-11 |
| Date Last Modified | 2022-Jun-28 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: McDonough
Latitude: 51° 7' 16.98" Longitude: -93° 47' 32.97"
UTM Zone: 15 Easting: 444536.686 Northing: 5663622.026 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SW
Point Location Description: N/A
Location Method: Conversion from MDI
1946: The property was held by Grompo Red Lake Mines Ltd. The area was prospected and a magnetometer survey and one drill hole was completed on the occurrence. 1959: The property was included in a group held by Paul C. Reidy. One drill hole completed near the occurrence. 1981: Goldfields Resources Canada Ltd. held the property in a large claim block. Airborne magnetometer, ground magnetometer and ground EM surveys were completed over the property.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The area in the vicinity of the occurrence is underlain by mafic pillowed and variolitic flows. The flows generally strike northeast-southwest, and dip subvertically. Foliation is parallel to subparallel to the bedding. Stratigraphic tops are to the northwest. To the southeast of the occurrence, thin units of greywackes, arkoses and iron formation are present in the stratigraphic sequence. DEPOSIT DESCRIPTION: Anomalous gold values occur in a thin quartz-carbonate vein, which is located along the contact between iron formation and mafic flows. GEOPHYSICAL DATA: A strong EM anomaly with good magnetic correlation occurs to the northwest of Hole # 2 and probably represents iron formation.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz Carbonate | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Flows | Pillowed And Variolitic | Adjacent |
| Terrigenous-Clastic-Unsubdivided | 3 | Greywackes | Near | |
| Sandstone | 4 | Arkose | Near | |
| Ironstone-unsubdivided | 5 | Iron Formation | Near |
Dec 07, 2005 (K R Kettles) - The area in the vicinity of the occurrence is underlain by mafic pillowed and variolitic flows. The flows generally strike northeast-southwest, and dip subvertically. Foliation is parallel to subparallel to the bedding. Stratigraphic tops are to the northwest. To the southeast of the occurrence, thin units of greywackes, arkoses and iron formation are present in the stratigraphic sequence. Anomalous gold values occur in a thin quartz-carbonate vein, which is located along the contact between iron formation and mafic flows.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue |
Dec 07, 2005 (K R Kettles) - MDI1 DATA: GRADE 1946 DDH#2: 0.4 OPT AU OVER 0.46M Anomalous gold values occur in a thin quartz-carbonate vein, which is located along the contact between iron formation and mafic flows. Drill hole #2 intersected a .46 m section which assayed 0.4 oz/ton (13.714 g/tonne) Au.
Dec 07, 2005 (K R Kettles) - The mafic metavolcanic rocks in the area have been carbonatized.
File - Resident Geologist files AF RL 1946 McDonough #7
Publication Number: AF RL 1946 Date: 1946
Author: Nowlan, J.P.
Publisher Name:
Location: Red Lake RGP
File - Resident Geologist files AF RL 1981 McDonough #32
Publication Number: AF RL 1981 Date: 1981
Author: Annan, et al.
Publisher Name:
Location: Red Lake RGP
File - Resident Geologist files AF RL 1982 McDonough #37
Publication Number: AF RL 1982 Date: 1982
Author:
Publisher Name:
Location: Red Lake RGP
File - Resident Geologist files AF RL 1983 McDonough #38, 41
Publication Number: AF RL 1983 Date: 1983
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: 572-573 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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