Ontario Geological Survey
Permanent Link to this Record:
MDI52F15SE00050
| Record Name(s) | Laval Township Silver - 1977, Diamond Lake - 1977 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Feb-28 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Silver
Secondary Commodities: Zinc, Lead
Township or Area: Laval
Latitude: 49° 49' .08" Longitude: -92° 31' 12.55"
UTM Zone: 15 Easting: 534519.84 Northing: 5518360.15 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F15SE
Point Location Description: Trenches on map in Assessment report 52F15SE0005
Location Method: Based on Assessment
1964: Penarroya Canada Ltd. conducted airborne magnetica and EM surveys and drilled 1 DDH. 1977: Hollinger Mines Ltd. carried out ground magnetic, HEM, and geological surveys, trenching, and sampling. 1978: Hollinger Mines drilled 4 DDH totalling 483.54 m. 1984: Jalna Resources carried out prospecting, mapping, and sampling. 1985: A. Glatz conducted sampling, and magnetometer and VLF-EM surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.2523 | 52F15SE0005 | 52F15SE0005 |
| 14 | 52F15SE0359 | 52F15SE0359 |
| 63.4403 | 52F16SW0034 | 52F16SW0034 |
| 2.8193 | 52F15SE0001 | 52F15SE0001 |
| 2.2458 | 52F15SE8292 | 52F15SE8292 |
| 2.8249 | 52F16SW0032 | 52F16SW0032 |
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 |
Jun 16, 2020 (Therese Pettigrew) - At the main showing is a narrow sequence of intercalated felsic flow units and volcanogenic sediments or tuffs. The sediments consist of alternate black and buff-white bands up to 6.4 cm (2.5 inches) wide, striking 085° az. (average), dipping vertical to steeply south, with local crenulations and possible small scale cross-bedding. The pattern suggesting cross-bedding is indistinct, and may be due solely to small arcuate fractures. Within the banded sequence, in the south half of the main trench, is a 12 inch (30 cm) bed of fine-grained, dark grey rhyolite that weathers smooth and buff. There is a hint of graphite or black carbonaceous material in some of the dark bands, particularly near a quartz vein at the north end of the pit. Many of the rocks within this sequence are magnetic, a feature due to disseminated crystals of magnetite (Assessment report 52F15SE0005).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Sphalerite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Pyrrhotite | Economic | Ore | ||||
| 6 | Graphite | Economic | Ore | ||||
| 7 | Magnetite | Economic | Ore |
Jun 16, 2020 (Therese Pettigrew) - The showing consists of up to 10% fine-grained sulphides (pyrite, galena, some sphalerite and chalcopyrite, and traces of pyrrhotite) within volcanogenic tuffs or sediments, and near the contacts with fine felsic fragmentals. A 15 ft. by 5 ft. (4.5 by 1.5 metre) blasted pit exposed the mineralization and has been subjected to grab, channel, and plugger dust sampling (Assessment report 52F15SE0005). Samples taken by A. Glatz show silver values ranging from 0.44 to 12.02 oz/t Ag (Assessment report 52F15SE0001).
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