Ontario Geological Survey
Permanent Link to this Record:
MDI000000002070
| Record Name(s) | Central Zone - 1987 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 2017-Mar-03 |
| Date Last Modified | 2022-May-17 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Dome, Heyson
Latitude: 51° 0' 57.8" Longitude: -93° 50' 41.93"
UTM Zone: 15 Easting: 440729 Northing: 5651950 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SW
Point Location Description: DDH HLD004 from Assessment report 20000014412
Location Method: Data Compilation
Access Description: The Property partly covers the community of Red Lake and is easily accessed, year round via provincial Highway 105 and Highway 618, which transects the southern part of the Property. Various secondary dirt roads and trails provide access to the remainder of the property.
1987-88: Lac Minerals (later Barrick Gold Corp.) carried out geological mapping, geophysical surveys, and drilled 9 DDH totalling approximately 5000 m. 2016: Premier completed 96 DDH totalling 45,881 m; four trenches exposing 6488 m2 were completed with 338 channel samples taken. A phase one 6 sample composite was run in a metallurgical testing. A follow-up phase 2 metallurgical test involved 4 samples for heap leaching potential.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.57108 | 20000014412 | 20000014412 |
| 27399 | 20000017046 | 20000017046 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Nov 30, 2020 (Andrew Tims) - Gold mineralization is represented by the Central Sector, which hosts the Laverty Dyke. The Central Sector is in the southern part of the Dome Stock where a series of conjugate structures occur within a roughly circular, silicic-altered, pseudo-breccia zone that is enveloped by a broader calcitic-altered zone. The sub-vertical Laverty Dyke strikes north-northwest across the Central Sector, which is characterized by wide-spread gold mineralization. The conjugate structures and their subordinate fracture system are occupied by gold-bearing quartz+/-tourmaline veins and veinlets, typically less than 2 cm wide. Gold is associated with quartz±tourmaline veins in felsic intrusions. These are characteristically small, narrow, laterally extensive, fault-fill and extensional veins, within and proximal to felsic and intermediate intrusions and dykes.
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 | Contains |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Tourmaline | Economic | Gangue |
Nov 30, 2020 (Andrew Tims) - The Central Zone, which hosts the Laverty Dyke, and is characterized by wide-spread gold mineralization. The Central Zone is in the southern part of the Dome Stock where a series of conjugate structures occur within a roughly circular, silicic-altered, pseudo-breccia zone that is enveloped by a broader calcitic-altered zone. The conjugate structures and their subordinate fracture system are occupied by gold-bearing quartz+-tourmaline veins and veinlets. The Laverty Dyke is characterized by widespread persistent mineralization associated with silicification, weakly disseminated sulphides and variably distributed quartz veinlets.
Nov 30, 2020 (Therese Pettigrew) - A hole drilled by Lac Minerals in 1987 returned up to 1.49 g/t Au over 48.7 m and 0.95 g/t Au over 32 m. The ore host is a locally silicified and mineralized Dome Stock Granodiorite. Visible gold is common in glassy-blue quartz veinlets. In intercepts with the typical strong silica alteration with chalcopyrite, occasional visible gold was intersected. The Dome Stock granodiorite remains open to exploration to both the north and east. Central zone highlight intercepts include 0.94 g/t Au - 305.5m incl. 1.61 g/t Au - 122.5m in HLD004, 0.80 g/t Au over 246.7 m (including. 2.16 g/t Au - 25.0 m) in HLD003, 0.98 g/t Au over 118.0 m (including. 3.08 g/t Au - 14.0 m) in HLD005, 0.79 g/t Au over 172.5 m (including 1.25 g/t Au over 50.8 m) in HLD011, 1.06 g/t Au over 93.0 m and 1.04 g/t Au over 10.0 m in HLD012 and 0.84 g/t Au across 101.0 m in HLD030 (Assessment report 20000014412). Drill core from the Central zone shows visible gold in glassy blue quartz-carbonate ± tourmaline ± pyrite ± chalcopyrite veins with silicified, sericitized and/or potassic altered granodiorite. Trace molybdenite has also been observed in drill core. Significant mineralization also occurs within the north-northeast trending Laverty dyke (Assessment report 20000017046).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Central Zone | 2017 | Indicated Mineral Resource | 31613000 | 2017 NI 43-101 Technical Report: Hasaga Project p. 95 | 31,613,000 tonnes @ 0.79 g/t for 803,900 oz contained Au | Gold 0.79 Grams per Tonne |
| Central Zone | 2017 | Inferred Mineral Resource | 23733000 | 2017 NI 43-101 Technical Report: Hasaga Project p. 95 | 23,733,000 tonnes @ 0.76 g/t for 582,700 oz contained Au | Gold 0.76 Grams per Tonne |
Publication - Greenstone-hosted Quartz-Carbonate Vein Deposits, in Goodfellow, W.D., ed., Mineral Deposits of Canada: A Synthesis of Major Deposit-Types, District Metallogeny, the Evolution of Geological Provinces, and Exploration Methods. pp. 49-73
Publication Number: Sp No. 5 Date: 2007
Author: Dubé, B. and Gosselin, P.
Publisher Name: Geological Association of Canada, Mineral Deposits Division
Location: GAC Website
Map - Howey-Hasaga area, Dome and Heyson townships, Red Lake area, District of Kenora (Patricia Portion), Ontario
Publication Number: ARM49E Scale: 1:3,600 Date: 1998
Author: Horwood H.C.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geology, Red Lake greenstone belt, western Superior Province, Ontario
Publication Number: OF 4594 Scale: 1:50,000 Date: 2004
Author: Sanborn-Barrie, Skulski, T; Parker, J
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/215568
Publication - Technical Report: Hasaga Project
Publication Number: 2017 NI 43-101 Date: 2017
Author: Jourdain, V., Langton, J., Ladidi, A.
Publisher Name: MRB & Associates for Premier Gold Mines
Location: SEDAR
MonoMap - Geology of the northern part of Heyson Township, District of Kenora
Publication Number: R056 Page: 37-38 Date: 1968
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Dome Township
Publication Number: OFM0231 Scale: 1:12,000 Date: 1993
Author: Atkinson B.T.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Red Lake
Publication Number: P3227 Scale: 1:50,000 Date: 1993
Author: Atkinson B.T., Stone D.
Publisher Name: Ontario Geological Survey
Location:
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