Ontario Geological Survey
Permanent Link to this Record:
MDI41O16NW00007
| Record Name(s) | Deburmac - 1946, Gould Dunn - 1933 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jul-29 |
| Date Last Modified | 2023-Mar-28 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Horwood
Latitude: 47° 59' 15.87" Longitude: -82° 16' 45.97"
UTM Zone: 17 Easting: 404538.12 Northing: 5315729.911 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 41O16NW
Point Location Description: The point is a very small cove between two shear outcrops.
Location Method: Field Visit with GPS
Access Description: The mineralization is located on the west shore of Hardiman Bay and access is easiest via boat from the north end of Horwood Lake.
1933 F. Gould staked the ground and tested a quartz vein in a series of trenches for over 120m and reported some gold values. 1946 There are some imprecise records which suggest Deburmac Gold Mines carried out a diamond drill program and channel sampled the main vein in a long trench. 1961 Ajax minerals mapped the area and sampled a 2.5m wide vein hosted in a shear zone. Though the vein contained significant mineralization only minor gold values were obtained. 1981 An airborne magnetic and VLF-EM survey flown by Kennco Exploration covered the area.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-2469 | 42B01SE0055 | 42B01SE0055 |
| T-2111 | 41O16NW0036 | 41O16NW0036 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Geological Age: Neoarchean Geochronological Age: 2700 MA Geochron. Age Ref.: GOO VOL 1
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (S Fumerton) - There are a number of parallel faults and shear zones less than 5m thick with sharp contacts with the adjacent metavolcanics. All these shear zones are parallel to Hardiman Bay and may form part of the Hardiman Bay Fault.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Vein | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Schist | Host | |
| Mafic lava flow-unsubdivided | 3 | Basalt | Tholeiitic Mg | N/A |
| Intermediate lava flow-unsubdivided | 4 | Andesite | Adjacent | |
| Mylonite/Fault Gouge/Pseudotachylite | 5 | Shear Zone | Contains |
Dec 07, 2005 (S Fumerton) - The quartz veining is confined to a strongly foliated and schistose metavolcanic shear zone which is parallel to the regional northeast trend and the Hardiman Bay Fault. Away from the shear zone the host basaltic flows are a fine grained light greyish green colour and may be Mg tholeiitic. Away from the shear hosted quartz vein there are numerous, thin, undulating strongly foliated zones transecting the metavolcanics.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue | ||||
| Calcite | Alteration | Carbonatization | 1 | Medium | Replacement | ||
| Sericite | Alteration | Potassic | 2 | Medium | Replacement | ||
| Chlorite | Alteration | Chloritic | 3 | Weak |
Dec 07, 2005 (S Fumerton) - The vein structure is composite. There are a number of smaller parallel veins centred on a larger vein with pinches and swells and varies between 1 and 2m. The main vein is banded and contains thin chloritic metavolcanic selvedges parallel to the walls. The veins are composed of a coarse grained smoky quartz combined with finer milky quartz which together form a mottled texture. In addition there is some calcite and actinolite. Locally the adjacent metavolcanics are schistose and highly altered to a carbonate sericite schist, in which case very fine, disseminated pyrite forms between 3 and 5% of the rock. Disseminated fine grained, anhedral pyrite is abundant in the veins though the concentrations are variable up to a maximum of about 5%.
Dec 07, 2005 (A Wilson) - Grab samples collected from this site range from 0.4 oz/t Au to 1.5 g/t Au from surface samples. Diamond drilling returned disappointing results.
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Gold | Unknown | ppm | BDL | |||
| Gold | Unknown | ppm | BDL | |||
| Gold | Unknown | ppm | BDL | |||
| Gold | Unknown | ppm | BDL | |||
| Silver | Unknown | ppm | BDL | |||
| Silver | Unknown | ppm | BDL | |||
| Silver | Unknown | .35 | ppm | |||
| Silver | Unknown | ppm | BDL |
| Rank | Classification |
|---|---|
| 5 | Mesothermal |
| Rank | Characteristic |
|---|---|
| 5 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Tabular | 120 | 2 | N/A | N/A |
Date: Aug 05, 1992
Geologist: S Fumerton
Notes: The trenches consist of a series along a line part way down the hill towards the lake and generally parallel to the shore. The trenches are locally filled with a lot of decaying vegetation, have numerous young spruce trees growing in them, or are partially covered by windfall. There is a long semi continuous trench less than two metres wide and up to a metre deep which may correspond to the work of Deburmac Gold Mines except of the orientation. Local cross trenches correspond to the original trenches by F. Gould. The position was fixed with a Garmin 50 which unlike the Garmin 100 which has been used in all other occasions does not have an averaging function and could not fix on enough satellites to get a position in the bush. Consequently a position was taken off shore.
File - Resident Geologist file T-2114
Publication Number: Date:
Author:
Publisher Name:
Location: Timmins RGP office
Map - Geological series, Horwood Township, District of Sudbury
Publication Number: P0748 Scale: 1:15,840 Date: 1997
Author: Milne V.G., Breaks F.W.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Publication - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Date: 1985
Author: Rose, D.G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Map - Horwood Lake, Sudbury District
Publication Number: M2329 Scale: 1:31,680 Date: 1975
Author: Breaks F.W.
Publisher Name: Ontario Division of Mines
Location:
Map - Geology, Swayze greenstone belt, Rush Lake, Ontario
Publication Number: OF3384c Scale: 1:50,000 Date: 1999
Author: Heather, K B; Shore, G T
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/210451
Part - Horwood Lake area
Publication Number: ARV44-07.002 Page: 35 Date: 1997
Author: Laird H.C.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geology, Swayze Greenstone Belt, Ontario [legend and figures]
Publication Number: OF 3384A Date: 1999
Author: Heather, K B; Shore, G T
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/210446
MonoMap - Geology of the Horwood Lake Area, Sudbury District
Publication Number: R169 Page: 45 Date: 1978
Author: Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist files 1946, air photo
Publication Number: Date: 1996
Author:
Publisher Name:
Location:
Part - Geology of the Horwood Lake area
Publication Number: ARV46-02 Date: 1997
Author: Harding W.D.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Chapleau area, districts of Algoma, Sudbury, and Cochrane
Publication Number: R157 Date: 1977
Author: Thurston P.C., Siragusa G.M., Sage R.P.
Publisher Name: Ontario Division of Mines
Location:
Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario
Publication Number: MDC018 Page: 65 Date: 1979
Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.
Publisher Name: Ontario Geological Survey
Location:
Book - Horwood Township - unpublished GDIF
Publication Number: GDIF Date: 1990
Author: Resident Geologist Staff
Publisher Name:
Location: Timmins RGP
Map - Geology, Swayze greenstone belt, Rollo Lake, Ontario
Publication Number: OF 3384b Scale: 1:50,000 Date: 1999
Author: Heather, K B; Shore, G T
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/210450
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