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Ontario Geological Survey
Permanent Link to this Record:
MDI52B14SE00017
| Record Name(s) | Abiwin - 1979, W.H. Meakin - 1979 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1979-Jun-11 |
| Date Last Modified | 2024-Apr-30 |
| Created By | |
| Revised By |
Primary Commodities: Platinum, Copper, Palladium
Secondary Commodities: Nickel
Township or Area: Trottier
Latitude: 48° 45' 34.86" Longitude: -91° 5' 51.42"
UTM Zone: 15 Easting: 639810 Northing: 5402487 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B14SE
Point Location Description: Conversion from map in OFR 5997
Location Method: Data Compilation
1956: International Nickel Co. carried out geological mapping and a ground-based magnetic/electromagnetic survey. 1987-1988: St. Joe Minerals Canada/Fleck Resources conducted diamond drilling, trenching, geological mapping, and soil sampling. 2014: James Brown and Michael Frymire conducted a small prospecting program (no assays reported). 2022: Allan Onchulenko and Peter Gehrels carried out a prospecting program
| Rock Type | Rank | Composition | Texture | Relationship | Hornblendite | 1 | Feldspathic | Host |
|---|---|---|---|---|
| Hornblende Gabbro | 2 |
Apr 30, 2024 (Justin Jonsson) - The Abiwin Intrusion is small, highly deformed, and approximately 200 m long and 40 m wide. It comprises two main units composed of locally sheared, altered feldspathic hornblendite to hornblendite and hornblende gabbro to hornblende melagabbro, respectively. The ultramafic rocks are massive, medium- to coarse-grained, and sometimes contain interstitial plagioclase that forms irregular zones of hornblende melagabbro. Well-developed appinite patches are common, particularly within the feldspathic hornblendites. The mafic rocks are fine- to medium-grained, generally massive to hornblende porphyritic, and exhibit a localized, weak to moderate igneous foliation. Contacts between the two main units are generally sharp, but within each contacts are irregular and gradational. Intrusion/country rock contracts are sharp, but undulatory, and no chilled margins were observed (MacTavish, 1999)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| Pentlandite | Economic | ||||||
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Pyrite | Economic | Ore | ||||
| 15 | Pyrrhotite | Economic | Ore |
Apr 30, 2024 (Justin Jonsson) - Mineralization occurs within three irregular sulphide zones, the largest of which is 40 m long and up to 10 m wide. The zones are associated with ultramafic rock contacts and contain 2 to 30% disseminated pyrrhotite, chalcopyrite, pentlandite, and minor pyrite. Two zones contain up to 2.04% Cu, 0.24% Ni, 720 ppb Pt, and 45 to 650 ppb Pd. One sample contained 2.20% Cu, 0.08% Ni, 39,500 ppb Pt, and 3.75 ppm Pd. Drilling by the St. Joe Canada/Fleck Resources JV determined that the mineralization exhibited minimal continuity in any direction (MacTavish, 1999)
Mono - Copper, nickel, lead and zinc deposits in Ontario (revised to February, 1957)
Publication Number: MDC002 Page: 11-12 Date: 1957
Author: Thomson J.E., Ferguson S.A., Johnston W.G.Q., Pye E.G., Savage W.S., Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 222 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Geology of the Crooked Pine Lake area, District of Rainy River
Publication Number: R179 Page: 60-61 Date: 1978
Author: Pirie J.
Publisher Name: Ontario Geological Survey
Location:
Mono - The Mafic-Ultramafic Intrusions of the Atikokan-Quetico Area, Northwestern Ontario
Publication Number: OFR5997 Page: 11-12 Date: 1999
Author: MacTavish A.D.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office