Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000002987

Record: MDI000000002987

General

Commodities

Primary Commodities: Copper, Palladium, Nickel

Secondary Commodities: Platinum, Cobalt, Chromium, Gold, Silver

Location

Township or Area: Fullerton Lake Area

Latitude: 49° 57' 33.02"    Longitude: -87° 19' 31.08"

UTM Zone: 16    Easting: 476667   Northing: 5534142    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E14NW

Point Location Description: Sample 357720 location from Assessment report 20000018139

Location Method: Data Compilation

Exploration History

2008: Sage Gold Inc. conducted helicopter-borne magnetic and electromagnetic-VTEM surveys. 2009: Sage Gold completed mapping, prospecting, stripping, and channel sampling. 2018: Noronex Ltd. carried out prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Eastern Wabigoon

Geological Age: Archean  

Lithology

Lithology Comments

Mar 23, 2022 (Therese Pettigrew) - The Headway Block A claims are within the Onaman pluton which is comprised of tonalite to granodiorite gneiss: fine to medium grained, foliated to banded gneiss with late granite dikes and amphibole inclusions; east of Onaman Lake to Nakina and north of Longlac (Stott et al. 2022). The geology of the Headway Block A property is “homogenous in its hetergenity”- a result of gneissification/migmitization processes, deformation, xenolith distribution and intrusion of multiple and texturally variable granites, pegmatites, aplites and mafic dykes. The vast majority of the property is underlain by biotite tonalite gneiss (Quartz-plagioclase-biotite +/- Kspar) which can vary significantly in texture and composition at the outcrop scale. Other early intrusive phases also appear to be present within the tonalite. It is possible these are melts derived from partial melting during the gneissification/migmitization processes that accompanied regional metamorphism. Consequently, the term biotite tonalite gneiss does not always apply; however, it has been used for simplicity given the heterogeneous nature of the early intrusive phase. The biotite tonalite gneiss commonly contains xenoliths or rafts of ultramafic material that, from and outcrop perspective, can constitute anywhere from 0-100% of the rock, the ultramafic rafts are supracrustal, possibly of komatiitic origin. They have subsequently been recrystallized to a pyroxenite composed almost exclusively of coarse pyroxene crystals with lesser plagioclase and (alteration related) talc/serpentine and biotite/phlogopite. Magnetite-chromite bands are locally present. Less mafic xenoliths (gabbros and diorite) are also present throughout the property. Iron formation xenoliths have also been identified. Crosscutting the early intrusive phase is a suite of granitoid, pegmatite and aplite dykes and plugs. Less common lithologies on the property include mafic dykes, diabase dykes and quartz veins. The primary fabric on the property is the gneissocity within the biotite tonalite gneiss. In the central part of the property it is oriented approximately north-south while in the north it is more commonly east-west and northeast-southwest. Northwest fabric dominates in the southern part of the property. Change in the fabric’s orientation are due to folding and fault block rotation. The main set of faults on the property trend northeast while mapped diabase dykes trend northwest (Assessment report 20000004572).

Mineralization

Mineralization Comments

Mar 23, 2022 (Therese Pettigrew) - Mineralization on the property identified to date consists of elevated Pt-Pd-Cu-Ni-Co-Cr-Au-Ag values within ultramafic rocks. The primary sulphides consist of pyrite, pyrrhotite, chalcopyrite and pentlandite (?). All sulphides are typically fine grained occurring as disseminations or clots interstitial to pyroxene grains. The sulphides rarely constitute more than 5% of the rock, but locally, can form up to 20%. There is a direct association between sulphide-bearing ultramafics and anomalous metal contents. Local examples or semi-massive magnetite +/- chromite have also been observed within the ultramafic unit. These samples typically contain elevated Cr and Co in addition to the other metals mentioned earlier. The mineralized zones can be up to several metres wide and continuous along strike for several 10s of metres to the limits of the stripped areas. Mineralization is hosted exclusively within the skarned and recrystallized ultramafic enclaves and their immediate hybridized border with the intrusive. All mineralized zones discovered to date have a north-south trend - a result of xenolith reorientation during gneissification. Pyrite and pyrrhotite are also found within quartz veins throughout the property, however, they are not associated with elevated PGE, base or precious metal values Sample 09RTB028 returned 1.02% Cu, 0.35% Ni, 0.19% Zn, 1.66 g/t Pd, 0.33 g/t Pt, 14.31 g/t Ag, and 0.14 g/t Au. Sample 09RCB326 returned 2.15% Cr, 0.14 g/t Pd, and 0.08 g/t Pt (Assessment report 20000004572). Sample 357720 collected in 2018 by Noronex returned 2.29% Cu, 6730 ppm Ni, 2090 ppm Cr, 224 ppb Au, 3640 ppb Pd, and 481 ppb Pt (Assessment report 20000018139).

Assay Samples

Mineral Record Details

References

Map - Geology and Tectonostratigraphic Assemblages, eastern Wabigoon Subprovince, Ontario

Publication Number: P3449 Scale: 1:250,000    Date: 2002

Author: Stott G.M., Davis D.W., Parker J.R., Straub K.H., Tomlinson K.Y.

Publisher Name: Geological Survey of Canada, 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