Ontario Geological Survey
Permanent Link to this Record:
MDI000000002341
| Record Name(s) | Phoenix Occurrence - 2001, Eva-Kitto Ni-Cu-PGE - 2002 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2019-Sep-30 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Therese Pettigrew |
| Revised By | S McDonald |
Primary Commodities: Nickel, Platinum Metals
Secondary Commodities: Copper
Township or Area: Kitto
Latitude: 49° 31' 58.48" Longitude: -88° 7' 44.03"
UTM Zone: 16 Easting: 418315 Northing: 5487312 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52H09SE
Point Location Description: Sample L060733 from Assessment report 20000014636
Location Method: Data Compilation
2001: Showing was discovered during and OGS mapping project. 2001: Hunter Dickinson Group Inc. carried out sampling and mapping. 2002-3: Kennecott Canada Exploration Inc. carried out an airborne MegaTEM and magnetics survey, prospecting, sampling, and drilled 4 DDH totaling 900 m. 2008: East West Resource Corp. drilled 1 DDH totaling 246.58 m. 2014: Transition Metals carried out prospecting, sampling, and reassayed historic core.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.24671 | 52H09SE2005 | 52H09SE2005 |
| 2.25855 | 52H09SE2006 | 52H09SE2006 |
| 2.26657 | 52H09SE2007 | 52H09SE2007 |
| 2.40222 | 20000003782 | 20000003782 |
| 2.46550 | 20000005759 | 20000005759 |
| 2.56747 | 20000014636 | 20000014636 |
| 2.22514 | 52H09SE2003 | 52H09SE2003 |
Province: Superior
Subprovince: Wabigoon
Belt: Beardmore-Geraldton
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Peridotite | 1 | Peridotite | Host |
|---|---|---|---|---|
| Diabase | 2 | Diabase | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore |
Sep 30, 2019 (Therese Pettigrew) - Mineralization of the Kitto intrusion is represented by interstitial Ni-Cu-PGE sulphides in one zone at the bottom of the lherzolite-olivine websterite, two zones in the underlying pyroxenite, and one zone at the contact of the melanogabbro and the basement iron formation. On the surface outcrops, high Ni contents in the lherzolites and trends of increasing Ni with MgO in all the lithologies, show that Ni partitioned into olivine as the magma evolved. On the surface outcrops in the central part of the intrusion, lower Ni contents are associated with higher Cu contents in the pyroxene-porphyritic melanogabbros, suggesting the lithologies did not contain sufficient olivine that would partition the Ni. Generally, anomalous PGE contents occur with anomalous Ni and Cu contents in the lithologies. Se and S data suggest that externally derived sulphur resulted in sulphur saturation and the precipitation of Ni-Cu-PGE sulphides. High Se contents are detected in the main mineralized zone at the bottom of the lherzolite-olivine websterite, and in the zones of the underlying pyroxenite (Laarman, 2007). The occurrence is situated on the southern contact between the peridotite and diabase in a stream bed. This occurrence was discovered during the 2001 Phoenix Bedrock Mapping Project in the stream bed located along the contact. The host rock consists of a fine-grained, dark green diabase containing trace to 1% pyrrhotite and pyrite, initially mapped as peridotite. A grab sample of the sulphide mineralized diabase returned 282 ppb Pd and 157 ppb Pt (Hart et al., 2002). While prospecting, a Kennecott employee outcrop of serpentinized, fine-grained peridotite in the vicinity of the OGS's Phoenix prospect, with 1-3% disseminated fine-grained sulphide. An assayed sample of this outcrop ran 901 ppb Pt+Pd. A nearby boulder of similarly serpentinzed peridotite with approximately 1% sulphide assayed 1065 ppb Pt+Pd. DDH 03EK-02 intersected a 30 m long interval of fine-grained disseminated sulphide mineralization in peridotite that returned assays of up to 0.17% Ni, 238 ppm Pt+Pd, and 0.139% Cu over 1.22 m (Assessment report 52H09SE2006). Sample L060733 assayed 1220 ppm Ni and 3110 ppm Cr (Assessment report 20000014636).
MonoMap - Precambrian Geology of Kitto, Eva, Summers, Dorothea and Sandra Townships, Northwestern Ontario: Phoenix Bedrock Mapping Project
Publication Number: OFR6095 Scale: Date: 2002
Author: Hart T.R., ter Meer M., Jolette C.
Publisher Name: Ontario Geological Survey
Thesis - Geochemistry and PGE Mineralization of the Kitto Intrusion: A Product of Mesoproterozoic Plume Magmatism Through Fault-Bounded Archean Crust, East Nipigon Embayment, Northern Ontario
Publication Number: 2007 MSc Scale: Date: 2007
Author: Laarman, J.E.
Publisher Name: Lakehead University
Mono - Report of Activities 1998, Resident Geologist Program, Thunder Bay North Regional Resident Geologist Report: Thunder Bay North and Sioux Lookout Districts
Publication Number: OFR5988 Scale: Date: 1999
Author: Mason J.K., Seim G.Wm., White G.D., O'Brien M.S., Farrow D.G., Walden A., Komar C.L.
Publisher Name: Ontario Geological Survey
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