Ontario Geological Survey
Permanent Link to this Record:
MDI52N02SE00013
| Record Name(s) | Northgate Prospect - 1959, Bobjo - 1928, Woco - 1939, Earngey - 1985 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1985-Oct-30 |
| Date Last Modified | 2023-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Earngey
Latitude: 51° 2' 38.07" Longitude: -92° 37' 16.63"
UTM Zone: 15 Easting: 526549 Northing: 5654776 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N02SE
Point Location Description: Drillhole locations from Assessment report 52N02SE0050
Location Method: Data Compilation
Access Description: The property can be accessed by air and is approximately 100 kilometers from the Town of Red Lake. An east-west gravel road is 3.6 km to the north. Local trails and gravel timber roads exist on the property during the summer months. During winter months South Bay Mine road is ploughed due to forestry activities in the area.
1925: Gold was discovered on the claims and the property,"Laidley Claims", were optioned to Coniasgas Mines Ltd. 1928-1929: Bobjo Mines Ltd. was formed in order to develop the property. 1939: Woco Gold Developments conducted stripping, trenching, and channel sampling, DD. 1949-1952: 7 DDH totalling 220 m. 1959: Northgate Exploration drilled 7 DDH totalling 901 m. 1969-70: The Red Lake Syndicate conducted an EM survey. 1981: Northgate conducted geological mapping, magnetic and EM survey. 1983: Orofino Resources conducted airborne magnetic and EM survey, geochemical and geological survey. 2006: Claim owned jointly with Kings Bay Gold and Perry English optioned by Mainstream Minerals. A line cutting program was conducted over 105 line-kilometers in addition to VLF-EM and Ground Magnetic geophysical surveys. 2009: Claim staked by Perry English. 2010-2011: Premier Gold Mines Ltd. optioned the property and conducted a 2882 line-km Mag/ VTEM survey and an 8 DDH program, 3227 m, with 3 of the holes (totalling 1548 m) drilled on the Northgate showing. 2016: Argo Gold acquired the property. 2017: Argo Gold carried out prospecting, mapping, and sampling. 2019: Argo Gold drilled 3 DDH. 200: Argo Gold completed outcrop stripping and channel sampling, with 121 samples collected over 83 m. 2021: Argo Gold completed 7 diamond drill holes.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| RL AF # Earngey 17 / 2.7823 | 52N02SE9888 | 52N02SE9888 |
| 2.50290 | 20000006394 | 20000006394 |
| 2.7823 | 52N02SE9888 | 52N02SE9888 |
| 23 | 52N02SE0050 | 52N02SE0050 |
| 2.49474 | 20000007642 | 20000007642 |
| 2.22 | 52N02SE9902 | 52N02SE9902 |
| 20000019402 | 20000019402 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Nov 17, 2016 (Andrew Tims) - The Bobjo property is underlain by intermediate to mafic, massive to pillowed, locally variolitic volcanics and associated fragmentals. The rock units typically strike northeast to southwest and are mainly composed of homogenous mafic metavolcanic flows and pillow lavas.
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Intrudes |
|---|---|---|---|---|
| Felsic lava flow-unsubdivided | 1 | |||
| Mafic lava flow-unsubdivided | 1 |
Jun 13, 2019 (Therese Pettigrew) - The Northgate property is underlain by locally intercalated metasediments and metavolcanics. Metasediments include argillite, siltstone, sandstone, and pebble conglomerate. Metavolcanics include intermediate to mafic flows and fragmentals (Assessment report 20000006394).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
Nov 17, 2016 (Syed Ali) - GRADE - 1930'S: AVE. $17.40/0.9 M FOR 61 M (AU @ $35/OZ), GRADE - 1959 - DDH: TR. TO 1.50 OPT AU, 0.4 OPT AU AT 500' (DEEPEST), Northgate DD - 0.28 oz/t Au across 2.7 ft., 1.5 oz/t Au across 1.5 ft., 0.52 oz/t Au across 1 ft. Woco Gold Development - vein sampled 0.497 oz/t Au across 3 ft width and 200 ft length. Gold found on the Bobjo property is typically associated with pyrite mineralization within and proximal to shear-hosted quartz +/- carbonate +/- chlorite veins, or as cryptocrystalline mineralization within what look like barren, milky quartz veins.
Jun 13, 2019 (Therese Pettigrew) - DDH AGN-19-011 returned 6.83 g/t Au over 1.5 m including 14.70 g/t Au over 0.5 m. DDH AGN-19-012 returned 34.40 g/t Au over 0.5 m (Argo Gold April 4, 2019 press release). Assays from the Premier Gold 2011 drill program returned values up to 3.168 g/t Au over 1.0 m from DDH RG11009 (Assessment file 20000006394).
May 09, 2023 (Paul Malegus) - Diamond drilling by Argo Gold in 2021 intersected multiple high grade intercepts, typically within quartz veins. AGN-21-025 returned grades of 0.24 g/t over 0.95 m and AGN-21-024 returned grades of 26.26 g/t Au over 2.65 m. 2021 diamond drilling also increased the strike length of the mineralization from 225 m to 500 m.
May 09, 2023 (Paul Malegus) - Mineralization is typically found in a chloritized shear zone, with pervasive carbonate alteration.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Northgate Prospect | 1984 | Unclassified | 58600 | Assessment file 52N02SE9888 (2.7823), Page 8 | Grade: 9.8 g/t (64 600 tons of 0.28 opt Au) | Gold 9.8 g/t |
Book - Northern Miner 85-03-14, Orofino, p. 21
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Mono - Gold occurrences, prospects and past-producing mines of the Birch-Confederation lakes area
Publication Number: OFR5835 Date: 1992
Author: Parker J.R., Atkinson B.T.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Earngey-Costello area, District of Kenora, Patricia Portion
Publication Number: R234 Page: 101-102 Date: 1985
Author: Thurston P.C.
Publisher Name: Ontario Geological Survey
Location:
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