Ontario Geological Survey
Permanent Link to this Record:
MDI52C15SE00031
| Record Name(s) | Turtle Tank A - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2003-Nov-14 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper
Township or Area: Little Turtle Lake Area
Latitude: 48° 45' 28.67" Longitude: -92° 32' 36.45"
UTM Zone: 15 Easting: 533554 Northing: 5400651 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52C15SE
Point Location Description: Location from Assessment report 20000006085
Location Method: Based on Assessment
1970: Northgate Exploration Ltd. carried out mapping. 1989: Goldfields Canada Mining Ltd. carried out stripping, mapping, sampling and airborne magnetometer and EM surveys. 1990-93: INCO carried out airborne mag and EM surveys, IP surveys, and sampling. 1993: L. Cousineau and E. Cousineau carried out prospecting, pits, and sampling. 1995: L. Cousineau and E. Cousineau carried out stripping and trenching. 1996: Nuinsco carried out sampling and drilled 2 DDH totalling 202.4 m. 2010: Pathfinder Gold Inc. carried out mapping, channel sampling, and drilled 1 DDH totalling 31.15 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.47183 | 20000006085 | 20000006085 |
| 2.17320 | 52C15SE0029 | 52C15SE0029 |
| 2.15711 | 52C15SE0006 | 52C15SE0006 |
| 2.153 | 52C16SW0031 | 52C16SW0031 |
| 2.15048 | 52C15SE8115 | 52C15SE8115 |
| 2.14873 | 52C16SW8111 | 52C16SW8111 |
| 63.6065 | 52C15SE0001 | 52C15SE0001 |
| W9610-00028 | 52C16SW0011 | 52C16SW0011 |
| OP93-305 | 52C16SW2001 | 52C16SW2001 |
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Fort Frances-Mine Centre
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore |
Sep 15, 2020 (Therese Pettigrew) - At the A Zone, a broad zone of sheared and strongly iron carbonate altered rock is weakly mineralized with pyrite and exhibits local silicification and quartz-carbonate veining. Intense shearing and iron-carbonate alteration occur across a width of 7 to 8 metres, locally up to 12 metres. Pyrite mineralization is sparse, and largely restricted to a few narrow alteration "horizons", well exposed only on the outcrop beneath which drillholes NTT 96-06 and NTT 96-09 tested. Quartz veining is also uncommon in general within the A Zone, and those present appear to contain little other than minor crystalline iron-carbonate and a few percent pyrite from place to place. Only a few (<5 cm to 10-15cm wide) veinlets exhibit extensive strike lengths, mostly through the central portion of the zone A few sizable quartz pods occur toward the eastern end of the zone's exposure, and one small area of intense silicification and quartz flooding was observed, measuring about 30 cm by 1.5 to 2.0 m, around sample 71804. Of the six surface samples collected for Au analysis, only one returned a significant assay value. Sample 71809, a grab sample of a 5 cm wide semi-massive pyrite seam associated with a 10 cm thick bed of cherty material (possibly very fine-grained veining), obtained from the main trench along L 127+00 E, at 98+30 N assayed 23.4 g/t gold. The sample contained 30-40% pyrite, and the high-grade assay likely indicates the presence of native gold within the sulphide seam. DDH NTT9606 returned weakly anomalous gold and copper values from the start of continuous sampling at 27.94 m to 49.74 m. The weighted average of the intersection is 280 ppb gold and 708 ppm copper over a 21.8 m core length. Peak gold analyses of 1500 ppb and 1180 ppb were returned, over intervals of 1.12 m and 0.62 m respectively. Two prominent spikes in the distribution of copper values, 0.245% and 0.53% were recorded over intervals of 0.89 m and 0.84 m. DDH NTT9609 encountered a similar zone from 48.26 m to approximately 66.25 m, followed by a 5.68 m interval of intermediate to felsic altered rock. The maximum assay result received to date is a value of 815 ppb Au over a 0.39 m core length (Assessment report 52C15SE0029). Channel sampling in 2010 retuned 0.4 gpt Au over 1.02 m. DDH TT10-3 returned up to 0.22 gpt Au over 0.53 m and two elevated Cu samples with 234-317 ppm Cu (Assessment report 20000006085). INCO sampling retuned 1.17 gpt to 63.9 gpt Au from iron carbonate altered mafic volcanics (Assessment report 52C15SE8115). Samples collected by prospectors in 1993 returned up to 531 gpt Au over 20 cm from a 3-8 cm quartz stockwork in a >1 m shear with some visible gold. Samples collected by prospectors in 1995 from Trench 23 returned 17.16 g/t Au over 30 cm and 18.71 g/t Au over 30 cm (Assessment report 52C15SE0006).
Map - Precambrian Geology and Mineral Occurrences, Mine Centre-Fort Frances Area
Publication Number: M2525 Scale: 1:50,000 Date: 2000
Author: Poulsen K.H.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Archean Metallogeny of the Mine Centre-Fort Frances Area
Publication Number: R266 Scale: Date: 2000
Author: Poulsen K.H.
Publisher Name: Ontario Geological Survey
Location:
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