Ontario Geological Survey
Permanent Link to this Record:
MDI52F05SE00011
| Record Name(s) | Kuryliw - Sullivan Bay - 1980, T33 - 2015 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Sep-25 |
| Date Last Modified | 2022-Sep-16 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Rowan Lake Area
Latitude: 49° 17' 33.04" Longitude: -93° 38' 35.67"
UTM Zone: 15 Easting: 453227.84 Northing: 5460172.64 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F05SE
Point Location Description: Northeast of Cameron Lake; Southwest end of Rowan Lake - Sullivan Bay, west.
Location Method: Conversion from MDI
Access Description: Best reached by float or ski-equipped aircraft from air base at Nestor Falls or by a winter road over a chain of lakes and portages from Whitefish bay Indian Reserve near Sioux narrows, ON.
1930s: Trenching and sampling with some assaying of samples. Work by Sylvanite Gold Mines Ltd. 1973: Sampling, magnetometer and geological surveys. Work by Chester J. Kuryliw. ? : Six DDHs totalling 134 m (439 ft). 2015: Stripping and channel sampling by Chalice Gold.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.56730 | 20000014049 | 20000014049 |
Province: Superior
Geological Age: Precambrian
Aug 08, 2016 (J Bongfelt) - 'The western Sullivan Bay area is predominantly underlain by metavolcanic rocks with some gabbro, all Early Precambrian rocks of the Superior Structural Province.' (Kenora Historical File 52F/05SE00011, Kuryliw-Sullivan Bay, Doc. SMDR 00143 9) Gabbro and mafic plagioclase-rich tuff display brittle ductile deformation with strongest pyrite content has an unusual feature in the sense that on the west side of the trench shearing is displayed as two distinct small shear zones striking towards each other as they migrate eastward with a 1-2m block of undeformed gabbro between them. The trench is on the north side of the Monte Cristo Shear Zone and the south limb of the Shingwak Lake anticline.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Host |
|---|---|---|---|---|
| Gabbro | 2 | Medium To Fine Grained, | Adjacent | |
| Mafic lava flow-unsubdivided | 3 | Near |
Mar 10, 2011 (J Bongfelt) - 'Local Geology: The main rock type is a steeply inclined Keewatin rhyolite that trends north-easterly. Tuffaceous rhyolite occurs just to the west of Sullivan Bay. A broad intrusion of gabbro, over ½ mile think runs northeasterly under Sullivan Bay. Three quartz porphyry dykes cut both rhyolite and gabbro and run north-westerly with local jogs in strike.' 'Claim #315355 - The mineralization occurs as quartz stringers and permiating silicification in the fractured porphyry dyke with 2-4% dissiminated pyrite. There is no obvious trend to the mineralization although it generally occurs zoned in a N-W direction across the NE trending dyke…' (Kenora AF 52F/05SE, P-1, Kuryliew, C., Geologic Mapping Report)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue | ||||
| 3 | Tourmaline | Economic | Gangue |
Sep 26, 2017 (J Bongfelt) - 'A second gold occurrence was exposed in several trenches on claim 315355 at the west side of Sullivan Bay. This was trenched and sampled by Sylvanite Gold Mines Ltd. in the late 1930's where a width of 7.1 feet of 0.20 ounce gold was reported. Assays taken from the sides of the filled trenches by this writer ran 0.03 ounce gold per ton.' (Kenora AF 52F/05SE, P-1, Kuryliw, C., Geologic Mapping Report). Sampling across altered quartz breccia veins and quartz-tourmaline veins in a hydrothermally fractured gabbro ran 3.05 g/t over 1 m and 1.29 g/t gold over 1 m, as well as three samples that ran 11.95 g/t Au over 1 m, 2.56 g/t over 1 m, and 1.34 g/t over 1 m. The strike of mineralization trends NW, oblique to the Monte Cristo shear zone (AFRI 2.56730).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| 1 | Vein |
File - Resident Geologist files 52F/05SE, P-1, Kuryliw, C. (Rowan Lake); 52F/05SE, FF-1, Sylvanite Gold Mines, (Rowan Lake)
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Author:
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Location: Kenora RGP office
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