Ontario Geological Survey
Permanent Link to this Record:
MDI53C07NW00023
| Record Name(s) | Kichiminitik Island - 1938, W Island - 1938, Derby Gold Syndicate - 1979, Spirit Lake - 1936 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1979-Apr-06 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Arsenic
Township or Area: Hewitt Lake Area
Latitude: 52° 29' 58.21" Longitude: -92° 55' 3.02"
UTM Zone: 15 Easting: 505600 Northing: 5816600 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C07NW
Point Location Description: From Bateman (1939).
Location Method: Data Compilation
1936-37: Spirit Lake Gold Mines carried out trenching, pitting, and EM surveys, and drilled more than 30 drill holes. 1955-56: Spirit Lake Gold Mines Ltd. carried out magnetometer and EM geophysical surveys and drilled 8 short DDH totalling 380.7 m. 1971-73: Spirit Lake Mines Ltd. carried out geophysical surveys, trenching, geological mapping, and 954 m of drilling in several holes. 1976: Hilltop Minerals Ltd. drilled 2 DDH.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.3417 | 53C10SW0014 | 53C10SW0014 |
| 2.390 | 53C07NW0011 | 53C07NW0011 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: North Spirit Lake
Geological Age: Neoarchean
May 24, 2007 (Mark Puumala) - The area geology is described in MDI53C07NW00025.
| Rock Type | Rank | Composition | Texture | Relationship | Diorite | 1 | Diorite | Contains |
|---|---|---|---|---|
| Quartz Arenite | 2 | Quartzite | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Arsenopyrite | Economic | Ore | ||||
| 4 | Magnetite | Economic | Ore | ||||
| 1 | Tourmaline | Economic | Gangue | ||||
| 2 | Epidote | Economic | Gangue |
May 24, 2007 (Mark Puumala) - The mineralized zone on Kichiminitik (W) Island is reported by Bateman (1939) to consist of a minimum of three parallel northwest-striking fracture zones hosted within a diorite intrusion. Bateman (1939) indicates that these mineralized zones parallel the dominant joint orientation within the intrusion, and has mapped them as typically dipping moderately (40-60 degrees) to the southwest. Based on the results of prospecting and diamond drilling carried out at the site in 1937 by Spirit Lake Gold Mines, Bateman (1938) suggests that the mineralized area covers a strike length of greater than 290 m, and a width of approximately 75 m. The mineralized fractures range from 5 to 30 cm in width and contain massive arsenopyrite (Bateman 1939). Disseminated arsenopyrite mineralization has also been observed to occur in the wall rocks for distances of up to 30 cm from the fractures. Bateman (1939) also indicates that the mineralized zone contains narrow (1 to 8 cm) tourmaline-quartz stringers that are mineralized with arsenopyrite. In addition to arsenopyrite, Bateman (1939) reports the presence of small quantities of pyrite, chalcopyrite, magnetite and epidote. Bateman (1939) reports chlorite alteration on the fracture walls, as well as secondary biotite and muscovite, albitized potassium feldspar, allanite and tourmaline within the mass of the diorite wall rock. According to Wood (1977), significant portions of the host intrusion (Bijou Point Complex) have been sheared and altered. Bateman (1939) reports the following significant assay results from this occurrence: A 91.6 kg bulk sample of massive sulphide material assayed 2.35 oz/ton Au and 21.83% As; grab sample gold assays of 0.83. 0.87 and 2.83 oz/ton.
| Rank | Classification |
|---|---|
| 1 | Alkalic Porphyry |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
MonoMap - Geology of North Spirit Lake area, District of Kenora (Patricia Portion)
Publication Number: R150 Scale: Date: 1977
Author: Wood J.
Publisher Name: Ontario Division of Mines
Location:
Part - Geology of the North Spirit Lake area
Publication Number: ARV47-07.002 Scale: Date: 1997
Author: Bateman J.D.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Scale: Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
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