Ontario Geological Survey
Permanent Link to this Record:
MDI42B01NW00007
| Record Name(s) | Boulder Lake - 1985, Utah Mines Ltd. - 1985, BHP-Utah Mines Ltd - 1987, BHP Minerals Canada Ltd. - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1993-May-19 |
| Date Last Modified | 2022-May-11 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Muskego
Latitude: 48° 11' 50.13" Longitude: -82° 15' 6.31"
UTM Zone: 17 Easting: 406982.29 Northing: 5338982.67 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42B01NW
Point Location Description: Centre of large 30m trench about 25m north of a small lake.
Location Method: Field Visit with GPS
Access Description: Old drill road approximately 2 km south of Bryce Creek along Highway 101. Trench lies at about 500m along this drill road about 10m south of the drill road.
1980 Noranda Mines staked some ground to the east based on a 5 g/t Au (0.15opt) and carried out a ground magnetic and HL electromagnetic survey over the property. 1985 Utah Mines Ltd. outlined a number of geophysical and geochemical anomalies. 1986 Utah Mines Ltd. completed a 12 hole 1767m DDH program to test geophysical and geochemical anomalies. A second drill program consisting of 5 holes, totalling 490m was undertaken to confirm continuity of mineralized zone. 1987 Detailed Induced Polarization survey was undertaken by Utah Mines over the southwestern claim group to delineate southwest extension of mineralized zone. 1988 Soil geochemistry and induced polarization survey was carried out by Utah Mines in north and northwest parts of claim group. 1989 A four hole DDH program was undertaken to test western extension of mineralization.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-2991 / 2.8556 | 42B01NE0013 | 42B01NE0013 |
| T-2991 / 2.8613 | 42B01NE0012 | 42B01NE0012 |
| T-2991 / 2.8811 | 42B01NE0010 | 42B01NE0010 |
| T-2991 / | 42B01NE0009 | 42B01NE0009 |
| T-2547 / 2.4748 | 42B01NE0015 | 42B01NE0015 |
| T-2991 / 2.8384 | 42B01NW8540 | 42B01NW8540 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Tectonic Assemblage: Muskego-Reeves
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (K Houle) - Quartz vein in a well foliated to highly sheared zone.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host |
Dec 07, 2005 (K Houle) - Quartz vein with predominantly sugary texture in a moderately to highly sheared mafic to intermediate metavolcanic. Metavolcanics are reported as moderately chloritized and highly carbonatized.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 1 | Tourmaline | Economic | Gangue | ||||
| 2 | Pyrite | Economic | Gangue | ||||
| 3 | Arsenopyrite | Economic | Gangue | ||||
| Silica | Alteration | Silicification | 1 | Medium | Replacement | ||
| Ankerite | Alteration | Carbonatization | 2 | Strong | Replacement | ||
| Chlorite | Alteration | Chloritic | 3 | Medium | Replacement |
Dec 07, 2005 (K Houle) - Primarily pyrrhotite and pyrite associated with quartz vein. Sulphides occur mainly as disseminates up to 2% with traces of chalcopyrite. Minor amounts of tourmaline have also been reported associated with the quartz veining.
Dec 07, 2005 (A Wilson) - Assays up to 3.7 g/t Au have been obtained from this site. A grab sample from a trench (OGS) returned 0.497 g/t Au, 0.2 g/t Ag. The sample was a mafic to intermediate metavolcanic rock in contact with a quartz vein containing 1/2% disseminated pyrrhotite and pyrite.
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Copper | Unknown | .0116 | % | |||
| Gold | Unknown | .497 | ppm | |||
| Lead | Unknown | .0003 | % | |||
| Nickel | Unknown | .0116 | % | |||
| Silver | Unknown | .2 | ppm | |||
| Zinc | Unknown | .005 | % |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 10 | 1 | 70 | N/A | N/A |
Date: May 16, 1986
Geologist: J Ireland
Notes: The writer, accompanied by Lorne Luhta, Resident Geologist, met with Duncan McIvor of Utah Mines to view some of the core from the most recent drilling on Utah's Boulder Lake property located in Muskego and Keith Townships. Three additional holes numbered BL-13-86, 14-86, 15-86 were drilled to test the sericite carbonate pyrite quartz arsenopyrite zone both east and west of the original discovery hole BL-5-86 located at L56W/1+00N on the grid 1600 ft west of the intersection of the baseline and Highway 101W. Hole BL-13-86 Drilled 800' east of BL-5-86. Viewed mineralized section and footwall rocks. 100-104.5 assay 0.13 opt Au - Qtz/Carb vein. 104.5-108 assay 0.05 opt Au carbonatized sericitized - 3% py/aspy. This lower section occurs within the lower portion of the sericitized silicified horizon. Footwall rocks lie immediately below the mineralized section and consist of the extremely carbonatized (ankerite) chlorite basalts. A 1:1 relationship between gold mineralization and arsenopyrite exists. Hole BL-15-86 148' - 154' chloritized, foliated basalt. 154' - 158' basalt progressively carbonatized and contains minor pyrite disseminations. 158' - 166' qtz carbonate zone - abundant pyrite and arsenopyrite averages 5% with local 15% accumulations. 166' - 186' altered basalt, carbonatized and sericitized with 1-5% disseminated pyrite and arsenopyrite plus numerous sulphide filled fractures and qtz-carbonate veinlets. 186' - 206' foliated, banded basalts cut by numerous carbonate stringers. The alteration assemblage hosting gold mineralization is open at depth and in both directions along strike. The horizon is present in all 5 holes drilled to date. [ PRECIS ]
Date: May 25, 1993
Geologist: K Houle
Notes: The occurrence consists of an approximately 30m long trench with an exposed quartz vein running down the centre. This trench is referred to as the Main Vein in both the Utah Mines geology plan and drill logs. The quartz vein of interest has a predominantly sugary texture and narrows from approximately 0.8m to 0.2m in an easterly direction over the length of the trench. The sulphide mineralogy consists primarily of disseminated pyrite and pyrrhotite along the margin of the quartz vein as well as within the metavolcanic host rock. Pyrite veinlets 1-5mm have been observed proximal to the quartz vein within the metavolcanic. The metavolcanic host rock is of mafic to intermediate composition and is well foliated to highly sheared. Small 1-3mm subangular fragments have been observed in the trenched area indicating tuffaceous origin.
File - Resident Geologist files 1971, air photo
Publication Number: Date: 1996
Author:
Publisher Name:
Location:
Map - Precambrian Geology, Northern Swayze Greenstone Belt
Publication Number: M2627 Scale: 1:50,000 Date: 1995
Author: Ayer J.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Parts of Keith and Muskego townships, District of Sudbury, Ontario
Publication Number: M1950-04 Date: 1997
Author: Prest V.K., Hogg N.
Publisher Name: Ontario Dept. of Mines
Location:
Core - Resident Geologist Core Library
Publication Number: Drill Core Date: 1996
Author:
Publisher Name:
Location:
MonoMap - Precambrian Geology, Northern Swayze Greenstone Belt
Publication Number: R297 Date: 1995
Author: Ayer J.A.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)
Publication Number: OFR5912 Page: 584-585 Date: 1995
Author: Fumerton S.L., Houle K.A.
Publisher Name: Ontario Geological Survey
Location:
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