Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001740

Record: MDI000000001740

General

Commodities

Primary Commodities: Platinum, Palladium

Location

Township or Area: BMA 524 861

Latitude: 52° 26' 2.02"    Longitude: -86° 13' 17.55"

UTM Zone: 16    Easting: 552923   Northing: 5809584    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 43D08NE

Point Location Description: GPS co-ordinate of DDH 07HB-05

Location Method: Based on Assessment

Exploration History

2003-06: Northern Shield Resources Ltd. - ground geophysics, GC, airborne geophysics, - DD-1-815m

Assessment Work on File

Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Geological Age: Archean  

Lithology

Lithology Comments

Aug 11, 2014 (A Wilson) - Mela to leucogabbro, anorthosite and pyroxenite were intersected in this hole. Anorthosite and leucogabbro are significantly more abundant in the lower portion of the hole. Grain size is typically coarse to very coarse but some occasional fine to medium-grained gabbros are also present. As in previous holes, the gabbros and pyroxenites display a metamorphic assemblage of hornblende and plagioclase with locally variable amounts of chlorite, actinolite and epidote. Oxides and sulphides are also present in most units in variable percentages. Metamorphic overprint on primary texture varies significantly from complete replacement to recognisable primary cumulate texture. Ultramafic layers including pyroxenite and possibly peridotite were intersected in the hole. The pyroxenites are similar as those described in previous holes and are composed mostly of hornblende with different proportions of actinolite, chlorite, oxides and sulphides. As in other holes, deformation appears to typically concentrate in the pyroxenitic sections, as they are softer. Some nice coarse pyroxene cumulate textures are however well preserved locally. Soft layers containing talc are interpreted to be derived from peridotites and/or olivine bearing gabbros and gabbronorites. These rocks are now metamorphosed into an assemblage of chlorite, hornblende, biotite, actinolite, talc and up to several percent of magnetite. Layering in this hole was mostly intersected at near perpendicular to about 20º to perpendicular from top to bottom. Rhythmic layering is locally well defined with anorthosite and pyroxenite centimetric bands. There are very few indications of top direction in this hole but the close observation of contacts between different composition layers may indicate an upright sequence.

Mineralization

Mineralization Comments

Aug 11, 2014 (A Wilson) - Hole 07HB-05 intersected 0.53 grams/tonne Pt+Pd over 0.34 meters in association with trace amounts of pyrrhotite, chalcopyrite and pentlandite

Mineral Record Details

References

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

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:

Publication - Press releases Northern Shield Resources Inc.

Publication Number: 3 Scale:     Date: 2009

Author: Northern Shield Resources Inc.

Publisher Name:

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Ministry Contact Information

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