Ontario Geological Survey
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MDI000000000928
| Record Name(s) | McNugget (MN10-90 & MN10-91) - 2010, Butler (MN10-90 &MN10-91) - 2010 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2010-Nov-03 |
| Date Last Modified | 2022-Jan-05 |
| Created By | N Bennett |
| Revised By | Shannon Zurevinski |
Primary Commodities: Copper, Zinc
Secondary Commodities: Silver
Township or Area: BMA 527 864
Latitude: 52° 45' 17.43" Longitude: -86° 49' 4.44"
UTM Zone: 16 Easting: 512290 Northing: 5845015 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 43D15
Point Location Description: Drill collar located with GPS from 2010 drill program.
Location Method: Other Literature
Access Description: The claim group is situated on the western fringe of the James Bay lowlands and is located about 40 kms east of the First Nations community of Webequie. Property is centered about the UTM coordinate 5842000 north and 514000 east (NAD83, Zone 16). Access is by air.
Historically, there has been no comprehensive government geologic mapping conducted in the Property area due to the overall lack of outcrop and the presence of Paleozoic cover units. Regionally, however, Ontario Geological Survey (OGS) mapping by Thurston et al. (1979) and Buse et al. (2009), covers parts of NTS map sheet 43D which includes the westernmost Area 1 claims. In recent years, the OGS has undertaken a program of aeromagnetic interpretation studies to characterize the Precambrian basement under cover rocks of the James Bay and the Hudson Bay Lowlands (Stott and Berdusco, 2000; Stott and Rainsford, 2006; Stott et al., 2007; Stott 2008a; 2008b; 2008c; Stott et al., 2008). The aeromagnetic base data used for these compilations were derived from their Operation Treasure Hunt initiative (OGS, 2003a; 2003b; 2005). The OGS has published two main indicator mineral sampling surveys (Crabtree, 2003; Crabtree and Gleason, 2003) covering portions of the Property Area 1 and Area 2. Crabtree (2003) presents results for kimberlite indicator minerals (KIMs), metamorphic/magmatic massive sulphide indicator minerals, and gold grains in alluvial samples, while the data in Crabtree and Gleason (2003) include a full geochemical analytical suite that is applicable for base and precious metals exploration, in addition to KIMs. The James Bay lowlands were put on the “exploration radar screen” by the discovery of diamonds at the Victor Pipe west of Attawapiskat. Spider/KWG had a VMS discovery and staked an area surrounding it to cover an average sized VMS camp. Freewest and Noront staked to the southwest attaching their claim blocks to the Spider/KWG block also targeting VMS potential. Macdonald Mines then staked in the area based on GSC and their own airborne magnetics data. 2012- MacDonald Mines Exploration: An overview of past and current work indicated that the company collected airborne EM, magnetic and gravity data from a HeliGeoTEM survey covering 261 line-km. Surface EM and 7 ground mag surveys (covering 81.1 line-km) were also completed over the Burtler 1,3,5,6,a nd 7. Down Hole EM was conducted on 64 DDH and geophysical modelling of the results were completed. To date- 157 holes have been drilled on the Butler property totalling 28,862 m and over $18 million has been spent on the property since 2003. (News Release, MacDonald Mines Exploration Ltd. Feb 14, 2012). Assay highlights from ongoing drilling at the Butler Property include 41.5 m of 0.4% Cu, 3.26% Zn and 6 g/t Ag in hole BP12-Cu14.
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Geological Age: Archean
Nov 03, 2010 (N Bennett) - The James Bay Lowland Property is located in the Archean-aged Superior Province of Northern Ontario, which has been stable tectonically since ca. 2.6 Ga and represents the core of the Canadian Shield. It is divided into distinct subprovinces based on lithology, structure, tectonic and metamorphic conditions. The present amalgamation of these subprovinces is thought to be a collection of small Mesoarchean continental fragments and Neoarchean oceanic plates which have been aggregated during a series of accretionary processes spanning ~40 Ma through five separate accretionary orogenic events (Percival et al., 2006). This initially resulted in a tectonic regime dominantly north-verging in the southern half of the province and south-verging in the far north. This regime then became a dextral transgressive regime that led to the formation of large E-W trending strike-slip faults (Davis, 2003). Post-tectonic granitic magmatism spans the period 2.68-2.64 Ga, and deep crustal high-grade metamorphism is recorded at 2.66-2.62 Ga (Helmstaedt and Harrap, 2000). The resulting terrane distribution is that of large-scale east-west trending belts of alternating granite-greenstone and metasedimentary subprovinces. Alternate theories based on cross-terrane lithologic overlaps suggest that the present terrane distribution may represent the effect of late differential uplift of a complexly layered accretionary complex (Davis, 2003). The James Bay Lowland claim blocks lie within the subprovince known as the Sachigo Superterrane. The Sachigo Superterrane is composed of old plutonic rocks of the ~3.0 Ga North Caribou Terrane that may have acted as a protocontinental nucleus around which other terranes accreted during assembly of the Superior Province (Percival et al., 2006). Early (2.98-2.85 Ga) minor mafic to ultramafic rocks associated with the North Caribou Terrane have been interpreted as mainly platformal or rift-type sequences (Percival et al., 2006), with a later (2.85-2.71 Ga) contribution of arc-related material. Continental arc magmatism caused severe reworking at 2.75-2.70 Ga (Percival and Easton, 2007). Central portions of the Terrane underwent plutonic intrusion (2.74-2.70 Ga), remnants of which are caught up and preserved in younger magmatism. Overall, the North Caribou terrane was reworked sporadically over a 300 Ma period.
| 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 | Sphalerite | Economic | Ore |
Nov 03, 2010 (N Bennett) - Mineralization encountered in MN10-90 includes, 1.11% Cu over 5 metres. From 39.62m to 40.38m =304ppm Zn, 9990ppm Cu From 40.38m to 41.38m = 239ppm Zn, 11300ppm Cu From 41.38m to 42.38m = 361ppm Zn, 8000ppm Cu From 42.38m to 43.38m = 2540ppm Zn, 14000ppm Cu, 9.1ppm Ag From 43.38m to 44.38m = 21200ppm Zn, 15900ppm Cu, 11.6ppm Ag From 44.38m to 45.38m = 16800ppm Zn, 6330ppm Cu, 6.3ppm Ag From 47.47m to 48.47m = 16400ppm Zn, 235ppm Cu Mineralization encountered in MN10-91 includes: From 16.76m to 17.76m = 187ppm Zn, 7580ppm Cu From 17.76m to 18.76m = 577ppm Zn, 7150ppm Cu From 18.76m to 19.76m = 1330ppm Zn, 17700ppm Cu From 19.76m to 20.89m = 26200ppm Zn, 11200ppm Cu From 20.89m to 21.89m = 8850ppm Zn, 521ppm Cu
| Rank | Classification |
|---|---|
| 1 | VMS Base Metal |
| Rank | Characteristic |
|---|---|
| 2 | Disseminated |
| 1 | Massive |
Publication - Macdonald Mines news release: June 22, 2010
Publication Number: Scale: Date:
Author:
Publisher Name: Macdonald Mines
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