Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI53B14NE00012

Record: MDI53B14NE00012

General

Mineral Record Identification
Record Name(s) Pyrotex - 1967, Agutua Arm - 1967, Recoskie No. 1 - 1995
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1995-May-23
Date Last Modified 2023-Aug-03
Created By
Revised By

Commodities

Primary Commodities: Gold, Silver, Copper



Location

Township or Area: Keeyask Lake Area

Latitude: 52° 53' 19.22"    Longitude: -91° 10' 14.35"

UTM Zone: 15    Easting: 623077.95   Northing: 5861453.53    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 53B14NE

Point Location Description: Map in Assessment report 53B14NE0028

Location Method: Data Compilation



Exploration History

Pre-1966: an unknown party discovered and performed limited work on sulphide-bearing quartz veins in sheared metavolcanics located along the southeast shore of the northern part of Agutua arm of Wagamow Lake. 1967: Pyrotex Mining and Exploration Company carried out trenching stripping, and drilled 4 DDH totalling 256 m. 1985: Moss Resources Ltd. conducted prospecting, trenching, mapping, and soil and rock sampling. 1986-87: Moss Resources drilled 14 DDH totalling 1146.4 m.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
13 / 53B14NE0013 53B14NE0039 53B14NE0039
53B14NE0010D1 53B14NE0035 53B14NE0035
53B14SE0020 53B14NE0028 53B14NE0028
2.8098 53B14NE9438 53B14NE9438

Geology

Province: Superior

Subprovince: Berens River

Terrane: North Caribou

Geological Age: Mesoarchean  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Intermediate lava flow-unsubdivided 1 Host
Tonalite 2 Trondhjemite Dykes

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1ArsenopyriteEconomicOre
2PyriteEconomicOre
3ChalcopyriteEconomicOre
4BorniteEconomicOre
5TetrahedriteEconomicOre
1QuartzEconomicGangue
2AnkeriteEconomicGangue
3CalciteEconomicGangue
4ChloriteEconomicGangue
5FuchsiteEconomicGangue
6SericiteEconomicGangue

Mineralization Comments

Aug 16, 2019 (Therese Pettigrew) - On the northeastern shore of Agutua Arm, gold mineralization occurs in a set of en echelon, quartz-arsenopyrite-pyrite-chalcopyrite veins up to 25 cm wide within a 1-3 m wide, east-trending, quartz-Fe carbonate-chlorite bearing zone. The carbonate-bearing rock grades into massive, actinolite-rich, mafic volcanics over a distance of less than 25 cm. The vein set can be traced for 25 m along strike. Veins, which typically overlap in a right-handed sense, dip vertically and consist of massive quartz with minor disseminated pyrite, arsenopyrite and chalcopyrite, and localized pods of massive arsenopyrite and chalcopyrite. Minor (less than 5%) chalcopyrite and pyrite occur intergrown with arsenopyrite in the massive pods. Gold values are highest within the arsenopyrite pods (up to 43 ppm, 1.3 oz/ton). Quartz veins that are relatively barren of sulphides and the silicified wall rock both returned insignificant gold values (25 to 80 ppb) (Piroshco et al., 1989). The highest values reported by Pyrotex were 2.54 ounces/ton over 0.3 m for Au, 18.8 ounces/ton over 1.2 m for Ag, and 2.50% Cu over 1.2 m (Breaks and Bartlett, 1991). Samples collected by Moss Resources in 1985 returned results of 0.67 oz/t Au (23.0 g/t Au), 0.71 oz/t Ag (24.3 g/t Ag), and 2360 ppm Cu (Assessment report 53B14NE0028).



Mineral Record Details

Classification
RankClassification            
1 Vein (Polymetallic)
Characteristics
Rank Characteristic            
1 Vein

References

Article - Geology and gold mineralization of the Eyapamikama Lake area of the North Caribou Lake greenstone belt, District of Kenora (Patricia Portion)

Publication Number: MP126.055S Page: 283  Date: 1997

Author: Piroshco D.W., Shields H.N.

Publisher Name: Ontario Geological Survey

Location:


Map - Geological series, Precambrian geology, Eyapamikama Lake area, (Opapimiskan Lake project), Kenora District (Patricia Portion)

Publication Number: P2834 Scale: 1:31,680    Date: 1985

Author: Bartlett J.R., Breaks F.W., de Kemp E.A., Shields H.N.

Publisher Name: Ontario Geological Survey

Location:


Article - Sioux Lookout Resident Geologist's District - 1990

Publication Number: MP152.004 Page: 78-80  Date: 1997

Author: Janes D.A., Seim G.Wm., Storey C.C.

Publisher Name: Ontario Geological Survey

Location:


Mono - Geology of the Eyapamikama Lake area

Publication Number: OFR5792 Page: 65-68  Date: 1991

Author: Breaks F.W., Bartlett J.R.

Publisher Name: Ontario Geological Survey

Location:


Mono - The geology of gold prospects in the North Caribou Lake greenstone belt, District of Kenora, northwestern Ontario

Publication Number: OFR5698 Page: 23-25  Date: 1989

Author: Piroshco D.W., Breaks F.W., Osmani I.A.

Publisher Name: Ontario Geological Survey

Location:


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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office