Ontario Geological Survey
Permanent Link to this Record:
MDI42A06NE00113
| Record Name(s) | Collin-Grant Trenches # 4 and 5 - 1994 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2002-Oct-30 |
| Date Last Modified | 2023-Mar-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Deloro
Latitude: 48° 25' 15.89" Longitude: -81° 13' 33.68"
UTM Zone: 17 Easting: 483277.39 Northing: 5363128.079 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A06NE
Point Location Description: Trenches # 4 and # 5 as shown on Geology map for the B. D. Extension property is assess. file T-3673
Location Method: Based on Assessment
Access Description: A gravel road leads south from the community of houses to the west of the Buffalo Ankerite mine. About 1 km south of the community, a secondary road leads east to the Powell prospect. Just before the Powell prospect stripped area, a brush road leads south to the Big Dyke Extension property with a winter road providing walkable passage to the north boundary of the claim group.
In 1994, J. Grant and Y. Collin conducted an OPAP funded program on a group of claims known as the Big Dyke Extension property. The work program included geological mapping, magnetometer and VLF surveys and the excavation, washing, mapping and sampling of 5 trenches. Samples from trenches 3, 4 and 5 returned occurrence grade gold values.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-3673, 2.15637 | 42A06NE0022 | 42A06NE0022 |
| OP92-070, T-3673 | 42A06NE0023 | 42A06NE0023 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Deloro
Geological Age: Archean
Dec 07, 2005 (G Seim) - This occurrence is contained within mafic to intermediate, calc-alkaline mafic metavolcanic flows. Mapping by J.Grant in 1994 found the volcanic rock varied in composition from basalt to andesitic basalt from the northwest to the southeast. Trenches #4 and 5 are located within an area of andesitic basalt. Minor interflow iron formation is also present. J. Grant reports that Trench #4 exposed a mafic metavolcanic rock cut by a quartz vein system carrying smears and stringers of sulphide along the contacts. The trench map shows a NE trending quartz-sulphide-bearing shear zone dipping 60-70 degrees north. Two thin, 1-2 ft. iron formation bands containing quartz and py are intercalated with the andesitic basalt. The southern iron formation band returend a gold value of 773 ppb. Locally the basalt is carbonatized. Trench 5 was located 25 m east of Trench 4, with the quartz-sulphide-bearing shear zone occurring in the center of the trench. Two samples from along the S side of the shear zone returned 216 and 482 ppb Au while a 3rd sample 3 m to the south in pillowed andesitic basalt returned 720 ppb au.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt To Andesitic Basalt | Host |
|---|---|---|---|---|
| Ironstone-unsubdivided | 2 | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue | ||||
| Carbonate | Alteration | Carbonatization | 1 | Medium | Replacement |
Dec 07, 2005 (G Seim) - See Geology Screen.
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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office