Ontario Geological Survey
Permanent Link to this Record:
MDI52J02SE00023
| Record Name(s) | Rainbow Island NW - 1986, Mistango DDH #M-86-1 - 1986 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1995-May-29 |
| Date Last Modified | 2022-Jul-20 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Squash Lake Area
Latitude: 50° 2' 13.02" Longitude: -90° 44' 44.03"
UTM Zone: 15 Easting: 661437.74 Northing: 5545173.83 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52J02SE
Point Location Description: Diamond drill holes
Location Method: Conversion from MDI
Access Description: Light aircraft can land on the lake near the showing in summer and winter. Boat and snowmobile access to the site is possible from access roads off Hwy. 599 from Cobb Bay to Horizontal Bay of Sturgeon Lake.
1978: J.R. Nixon drilled 1 DDH totalling 81.7 m. 1986: Exploration drill program conducted by Mistango Consolidated Resources Ltd. to sample a number of targets that had been outlined by magnetic and VLF-EM ground surveys over the area. Drill holes were designed to cover the west side of the North Arm of Sturgeon Lake to the north of Rainbow Island. Two DDH totalling 197.2 m were drilled on this showing. M-86-1 was drilled at -40 degrees due south to a depth of 350 feet and M-86-2 was drilled at -40 degrees due north to 297 feet.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52J02SE M-0014B1 | 52J02SE9253 | 52J02SE9253 |
| 52J02SE 0141 | 52J02SE9260 | 52J02SE9260 |
| 2.12094 | 52J02SE8657 | 52J02SE8657 |
| 52J02SE-0060 | 52J02SE9261 | 52J02SE9261 |
| 52J02SE-0059 | 52J02SE8659 | 52J02SE8659 |
Province: Superior
Subprovince: Wabigoon
Belt: Sturgeon Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Tonalite | 1 | Silicified Trondhjemite | Host |
|---|---|---|---|---|
| Tonalite | 2 | Trondhjemite | Host | |
| Felsic lava flow-unsubdivided | 3 | Rhyolite | Host | |
| Mafic lava flow-unsubdivided | 4 | Basalt | Near | |
| Gabbro | 5 | Gabbro | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 1 | Carbonate | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue | ||||
| Carbonate | Alteration | Carbonatization | 1 | Unknown | Disseminated | ||
| Quartz | Alteration | Silicification | 2 | Unknown | Disseminated |
Apr 29, 2020 (R Tuomi) - DDH M-86-1 passed through coarse grained trondhjemite into a chilled contact with fine grained metabasalt. Down hole the felsic sills became less frequent and massive metabasalt sections predominated. Carbonate alteration and calcite veins were present in the contact zone. The hole ended in coarse metagabbro. The best assay was 0.02 ounce gold per ton (0.69 g/t Au) over 0.25 m (Assessment report 52J02SE8659).
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