Ontario Geological Survey
Permanent Link to this Record:
MDI52K14SE00004
| Record Name(s) | Bluffy Lake - 1979, Karas Anomaly - 2010 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1979-Mar-30 |
| Date Last Modified | 2022-Jun-23 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Karas Lake Area
Latitude: 50° 47' 12.1" Longitude: -93° 8' 56.71"
UTM Zone: 15 Easting: 489490.9 Northing: 5626115.62 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52K14SE
Point Location Description: Precise
Location Method: Data Compilation
Access Description: The Karas property is easily accessed by a well maintained network of logging roads branching from the main road between Ear Falls and Goldpines (Goldpine Rd.). To reach the property from Ear Falls Goldpine road is taken northeast from highway 105 for approximately 2km, then the Wenesaga logging road is taken going northeast for approximately 5km, then the South Bay logging road is taken for approximately 13km going north
1956 - Dome Exploration Ltd. conducted a ground based dip needle survey over a known banded iron formation. 1957 - Dome Exploration Ltd. contracted Koulzine and Brossard Ltd. who conducted an aeromagnetic survey over a considerable section of terrain covering the entire Karas property in order to identify other possible targets for exploration. 1957 - Dome Exploration Ltd. drilled 3 holes totalling 600 metres to explore the Karas anomaly west of Emarton Lake. 1976 - Hudson Bay Exploration conducted an airborne electromagnetic survey over a large part of the Karas claim block in the northeast. 1977 - Hudson Bay Exploration and Development Company Ltd. contracted Northwest Geophysics Ltd. who conducted over a dozen individual ground based electromagnetic surveys over various areas to the southeast of Red Lake, including a portion of the northern Karas property. 2008 Perry English acquired the property. 2010 Northern Iron Corp. held the property, conducted a moderate exploration program on the property including geological mapping, rock sampling and assaying, ground based geophysics, and one drill hole and assaying of drill core (history taken from assessment file 2.47074). 2011 - Northern Iron Corp conducted a 16 hole drill programs from the summer of 2011, totalling 5934 m to test the Karas South magnetic occurrence.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| RL3396 / 2.47074 | 20000006081 | 20000006081 |
| RL3475 | 20000007860 | 20000007860 |
| RL3544 | 20000014760 | 20000014760 |
| 10 | 52K14SE0028 | 52K14SE0028 |
| 63.903 | 52K14SE0035 | 52K14SE0035 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Birch-Uchi
Geological Age: Neoarchean Geochronological Age: 2800-2600 Ma Geochron. Age Ref.: GSC Open File 4256
Metamorphism Type: Regional
Metamorphism Grade: U. GS-Amphib
Jan 16, 2014 (Syed Ali) - Property bedrock geology is comprised of volcano-sedimentary rocks, respectively of the Confederation and English River assemblage affinities and felsic/mafic intrusives. Schistose submarine metasediments are predominant, tapering in a wedgeshaped contact with pink granite and granodiorite. Banded iron formation (BIF), primarily silicate and iron oxide facies, occur within the metasedimentary unit stratigraphy, possibly within the same broad stratigraphic horizon. Several faults, having similar trends, occur in vicinity of the BIF unit, particularly in proximity to areas of multiple or offset bands.
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Migmatite, Gabbro | Brecciated, Sills, Dykes | Intrudes |
|---|---|---|---|---|
| Pegmatite | 1 | Intrudes | ||
| Terrigenous-Clastic-Unsubdivided | 1 | Cherty Mudstone, Greywackes, Schistose Sandstone | Schistose | Host |
| Tonalite | 2 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Magnetite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Tourmaline | Alteration | Tourmalinization | 1 | Medium | Veins |
Feb 13, 2012 (A McKee) - 1979 estimated reserves: 21 million tons @ 22.8% Fe to depth of 150 m. 2010: The highest grades of Fe intersected were 8.5m of mineralization grading 32.87% Fe beginning at 34.9m depth, 12m of mineralization grading 30.68% Fe beginning at 61m depth, and 9m of mineralization grading 33.39% Fe beginning at 127m depth. The average grade of all sampled sections was 22.61% Fe of the mineralized banded iron formation.
Jun 23, 2022 (Q Unknown) - All three DDH drilled in 1957 by Dome intersected magnetite as banded iron formation (massive magnetite interbedded with greenschist facies schists and crosscut by syenite dykes) from the top to the bottom of the hole with average grades of 23-29% Fe. All three holes intersected multiple 4 m to 8 m intervals of massive magnetite grading 36-38% Fe. Northern Iron Corp drilled 16 holes during the summer of 2011, totalling 5934 m to test the Karas South magnetic occurrence. Magnetite was encountered in every hole, with the best intersection averaging 34.37% Fe2O3 across 97.52 m (2011-2012 Drilling report on the Karas Iron project).
| Rank | Classification |
|---|---|
| 1 | Igneous Contact |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Bluffy Lake Deposit | 1954 | Unclassified | 19050880 | OFR 6180, Table 14: Prelim Map P. 1189 (Breaks et al. 1976) | @ 22.86% Fe to a depth of 150 m |
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 218-219 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
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