Ontario Geological Survey
Permanent Link to this Record:
MDI53C13SE00018
| Record Name(s) | North Rock 22 Vein - 1963, Patnora - 1945 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1984-Jan-31 |
| Date Last Modified | 2022-May-31 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Silver
Township or Area: Setting Net Lake Area
Latitude: 52° 52' 4.23" Longitude: -93° 37' 34.71"
UTM Zone: 15 Easting: 457840.286 Northing: 5857752.758 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C13SE
Point Location Description: General
Location Method: Data Compilation
Access Description: 200 Km N Of Red Lake
1945: Trenching and diamond drilling by Patnora Mines. 1960: Diamond drilling by Roche Mines. 1963-1969: Trenching, sampling and geophysical surveying by North Rock Explorations. 1982: Prospecting, sampling and geological mapping by Getty Canadian Metals. 2007: Anaconda Gold Corp. Conducted a prospecting program. They suggest that further drilling be completed in this area. No significant assays reported at this time
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.37754 | 20000002839 | 20000002839 |
| 53C13SE0500 | 20000004850 | 20000004850 |
| 2.1748 | 53C13SE0508 | 53C13SE0508 |
| 2.1164 | 53C13NE0070 | 53C13NE0070 |
| 63.4272 | 53C13SE0008 | 53C13SE0008 |
| 20 | 53C13SE0060 | 53C13SE0060 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Favourable Lake
Geological Age: Mesoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Sheared And Mineralized | Host |
|---|---|---|---|---|
| Vein | 2 | Host | ||
| Gabbro | 3 | Near | ||
| Felsic lava flow-unsubdivided | 4 | Non-Mineralized | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Arsenopyrite | Economic | Ore | ||||
| 10 | Pyrite | Economic | Ore | ||||
| 15 | Pyrrhotite | Economic | Ore |
Oct 24, 2007 (Mark Puumala) - Ayres (1974) indicates that the North Rock 22 Vein occurrence consists of two trench-exposed, northwest-striking, en-echelon quartz veins hosted by a gold-bearing shear zone that cross-cuts intermediate metavolcanic tuff. However, Coll (1982) has interpreted the occurrence as consisting of a single quartz vein hosted within a 135-striking shear zone. The orientation of the quartz vein is reported to be variable, ranging in strike from 116 to 155, and dipping 66 to 77 degrees to the northeast. The tuff is intruded by gabbro approximately 20 m east and 80 m south of the surface expression of the quartz vein (Coll 1982). The quartz vein zone(s) are reported by Ayres (1974) to be 30 to 90 cm wide, and consist of white saccharoidal quartz. Ayres (1974) indicates that the westernmost trench exposes a discrete quartz vein, while the eastern exposure consists of 30 to 60% quartz that occurs as 2.5 to 5 cm wide lenses hosted within sheared metavolcanics. Mineralization consists of arsenopyrite that is reported to occur mostly in the sheared host rock, and extends up to 60 cm from the quartz vein material. The arsenopyrite found in the sheared tuff occurs as fine- to medium-grained disseminations, and as irregular blebs that comprise up to 50% of the wall rock. Arsenopyrite mineralization is rare in the quartz veins, but locally occurs as irregular fracture-filling veinlets up to 5 mm wide (Ayres 1974). Ayres (1974) reported gold assays of up to 0.23 oz/ton in seven grab samples containing arsenopyrite-mineralized tuff. The highest assay reported from two samples made up exclusively of quartz vein material was 0.02 oz/ton Au. Ayres (1974) also notes that gold values are proportional to arsenopyrite content. Coll (1982) reports grab sample assays of up to 0.42 oz/ton Au and 0.74 oz/ton Ag, with maximum quartz vein values of 0.17 oz/ton Au and 0.31 oz/ton Ag. Three diamond drill holes advanced by Roche Mines at this location in 1960 did not encounter any significant mineralization (Ayres 1974).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
Map - Trout Lakes, Kenora District
Publication Number: M2270 Scale: 1:31,680 Date: 1973
Author: Ayres L.D.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of the Trout Lakes area, District of Kenora (Patricia Portion)
Publication Number: R113 Page: 127-131 Date: 1974
Author: Ayres L.D.
Publisher Name: Ontario Division of Mines
Location:
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