Ontario Geological Survey
Permanent Link to this Record:
MDI52F08NW00046
| Record Name(s) | Stormy Lake Iron Formation - 1956, Noranda - 1956 |
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| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2003-Apr-30 |
| Date Last Modified | 2022-May-06 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Revell Lake Area
Latitude: 49° 22' 39.82" Longitude: -92° 14' 32.88"
UTM Zone: 15 Easting: 554987.464 Northing: 5469723.44 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F08NW
Point Location Description: Located on the SW shores of Stormy Lake and proceeds SE to Bending Lake
Location Method: Based on Assessment
Access Description: The property is located in the Stormy Lake area approximately 60 kilometers southeast of Dryden and 40 kilometers west of Ignace. Access to Stormy Lake is readily available by a gravel road (Snake Bay road) which connects Stormy Lake to Hwy 17. The East Bay and Snake Bay grids are accessible by boat in summer and snowmobile in winter from Stormy Lake. Kenora Resident Geologist Office, Assessment File 52F/08 SW-M-2, Noranda Mining and Exploration Inc., 1995.
An airborne electromagnetic survey was flown over the Manitou-Stormy Lake area with a Scintrex/Kenting Tridem system in 1980 for the Ontario Geological Survey. There is no record of previous exploration work within the claim group but Jalna Resources/Voyager Exploration Ltd. worked a property to the west of Stormy Lake in 1984. They carried out linecutting, ground geophysics, geological mapping, soil sampling (Cu, Zn Au) and trenching. The programs were gold oriented. Sulphide showings on their property were drilled, blasted and sampled. No significant results were realized. They did confirm the unconformity between the felsic pyroclastics in the upper part of the Wapageisi Volcanics and the Stormy Lake Group metasediments and located several strongly 'pyritized shear zones' within the felsic metavolcanics. In 1986, Noranda carried out reconnaissance mapping and prospecting for potential gold targets along the Manitou-Stormy Lake volcanic-sedimentary belt. A large area of alteration was outlined along the southern and southeastern margins of Stormy Lake, including chlorite-sericite and trace pyrite. In 1987-88, the Stormy Lake - Bending Lake area was staked by Don McKinnon for gold interests and Noranda acquired the ground as part of the much larger Manitou gold program. The Stormy Lake region was surveyed with airborne radiometrics and VLF. In the early 1990's A. Glatz staked untested AEM anomalies which occur in the region where Snake Bay enters the main body of Stormy Lake. Grab samples of felsic metavolcanics collected by Glatz were reported to contain chloritoid alteration. Noranda staked 11 claims over a number of other untested AEM anomalies in late 1992. In mid 1993 Noranda personnel collected and analyzed samples to assess the exploration potential of the felsic metavolcanic rocks occurring in the region. A lithogeochemical signature similar to that often associated with volcanic massive sulphide deposits was indicated. The Stormy Lake area is entirely underlain by supracrustal rocks of the Manitou-Stormy Lake greenstone belt. NNE facing felsic metavolcanic rocks of the Wapageisi group, consist of proximal coarse tuff, lapilli tuff and tuff breccia which are gradational to the east into more distal, finer grained tuff and lapilli tuff. These metavolcanic rocks are overlain by metasedimentary rocks of the Stormy Lake group. A 2.5 kilometer thick wedge of intermediate to felsic pyroclastic formations within the center of the property suggests a proximal volcanic environment. Mapping by D. Kresz indicates middle to upper greenschist facies metamorphism at Stormy Lake. Reconnaissance mapping has identified hydrothermal alteration evidenced by (a) strong carbonatization in the mafic volcanic assemblage; (b) sericite ± chlorite alteration of the felsic rocks at the narrows connecting Snake Bay to Stormy Lake; (c) chloritoid-bearing felsic tuffs along strike with an interibedded magnetite ± chert iron formation near the top of the Wapageisi volcanics; (d) sulphide burns within the tuff breccias south of the narrow; (e) semi-massive to massive quartz-pyrite float on the south shore of Snake Bay Narrows. Some high SiO2, felsic metavolcanics and moderate VMS whole rock alteration have been identified. There are strong untested AEM anomalies at top of felsic sequence on the narrows connecting Snake Bay to Stormy Lake as well as several weak to moderately strong AEM anomalies beneath Stormy Lake. (Kenora Resident Geologist Office, Assessment File 52F/08 SW-M-2, Noranda Mining and Exploration Inc., 1995).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.16051 / 52F08SW M-2 | 52F08NE0001 | 52F08NE0001 |
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