Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001739

Record: MDI000000001739

General

Commodities

Primary Commodities: Nickel, Platinum, Palladium

Secondary Commodities: Copper, Iron

Location

Township or Area: BMA 524 861

Latitude: 52° 25' 40.21"    Longitude: -86° 13' 17.56"

UTM Zone: 16    Easting: 552930   Northing: 5808909.99    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 43D08NE

Point Location Description: drill collar for 07HB-01

Location Method: Based on Assessment

Exploration History

2003-06: Northern Shield Resources Ltd. - ground geophysics, GC, airborne geophysics, - DD-1-733m

Assessment Work on File

Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Domain: Oxford-Stull

Geological Age: Archean  

Lithology

Lithology Comments

Aug 11, 2014 (A Wilson) - Hole 07HB-01 intersected layering at relatively high angles, generally between 30° and 40° to perpendicular. Layering is defined by compositional variations from anorthosite or leucogabbro to melagabbro and pyroxenite (metamorphosed to mostly amphiboles), where contacts between the lithologies are relatively sharp (or from mafic-felsic banding . The lithologies intersected are very coarse- and coarse-grained gabbro and melagabbro, coarse-grained pyroxenite with cumulate textures, anorthosite, and a variety of medium-grained leucogabbro to melagabbro. Pegmatitic gabbros are also present and some intersections display well preserved cumulate textures.

Mineralization

Mineralization Comments

Aug 11, 2014 (A Wilson) - A 1.09 m section of drill core returned an assay of 0.124 ppm Pt, 0.02 ppm Pd, 0.144ppm Pt+Pd, 12 ppm Cu and 158 ppm Ni These mineralized intervals are very inconspicuous with little to no visible sulphides accompanying the platinum mineralization. Infill sampling was subsequently conducted on large intervals of drill-core that had not yet been sampled at the bottom of holes 07HB-01 and the top of hole 07HB-05, which could have contain more PGE mineralization. The assay results confirmed the presence of small reefs with anomalous PGE values where the first values were obtained although not returning higher values. The coarse-grained gabbro is generally composed of large plagioclase crystals partly recrystallized but displaying what could be remnant core of original plagioclase grains with a purplish color. Mafic minerals are generally hornblende with subsidiary chlorite, actinolite and biotite, which may indicate metamorphism at the upper greenschist to lower amphibolite facies. As noted in previous holes, the pyroxenitic horizons generally contain 1 to 3% sulphides (mostly pyrite but local pyrrhotite and chalcopyrite whereas the gabbros have typically none to less than 1%.

Mineral Record Details

References

Publication - Press releases Northern Shield Resources Inc.

Publication Number: Scale:     Date: 2006

Author:

Publisher Name:

Publication - Report on Diamond Drilling, Highbank Lake Property, Northern Ontario.

Publication Number: NI 43-101 Scale:     Date: 2007

Author: C. Vaillancourt and I. Bliss

Publisher Name:

Map - Precambrian Geology of the Hudson Bay and James Bay Lowlands Region Interpreted from Aeromagnetic Data-South Sheet

Publication Number: P3599-REV Scale: 1:500,000    Date: 2009

Author: Stott G.M.

Publisher Name: Ontario Geological Survey

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Ministry Contact Information

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