Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000002293

Record: MDI000000002293

General

Commodities

Primary Commodities: Cobalt, Nickel

Secondary Commodities: Copper, Manganese, Titanium

Location

Township or Area: Leckie Lake Area

Latitude: 49° 6' 11.7"    Longitude: -88° 57' 57.76"

UTM Zone: 16    Easting: 356500   Northing: 5440795    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52H02SW

Point Location Description: Collar of DDH U-17-02 from Assessment file 20000007729

Location Method: Data Compilation

Access Description: The Disraeli Lake Property can be reached by traveling east along the TransCanada Highway 17 and then North on Provincial Highway 527 to the Mawn Lake Road. Travel east a distance of 24.2 kilometers on the Mawn Lake Road into the central part of the property, which is within 500 meters of the site of diamond drill holes U-17-01 and U-17-02.

Exploration History

2000: Avalon Ventures Ltd. drilled 5 DDH totaling 678 m in the general area. 2002: Avalon conducted an EM ground geophysical survey. 2010: Ursa Major Minerals Inc. acquired the property from Rio Tinto and carried out an airborne EM and mag survey. 2011: Ursa Major drilled 2 DDH totaling 513 m. 2014: Ursa Major carried out soil sampling and prospecting. 2015: Ursa Major carried out EM, IP and resistivity surveys.

Assessment Work on File

Geology

Province: Southern

Subprovince: Nipigon Basin

Formation Group: Sibley Group

Geological Age: Paleoproterozoic  

Lithology

Lithology Comments

May 17, 2019 (Therese Pettigrew) - The geology of diamond drill hole U-17-01 is best described as multiple laminated, somewhat flat-lying sequences of Sibley Group sedimentary rocks consisting of a variation of alternating greywackes and finer grained undifferentiated clastic sediments. These sedimentary rocks have been intruded by sill or dyke like injections of diabase, gabbro, and olivine bearing gabbro rocks. The thicknesses of these rocks in cross section seem to vary from 3 meters to 35 and 40 m in the particular area (Assessment file 20000007729).

Mineralization

Mineralization Comments

May 17, 2019 (Therese Pettigrew) - An intersection of magnetite, pyrite, pyrrhotite, and chalcopyrite was encountered in the U-17-01 DDH from 130.80-138.95 m. The same mineralized unit was encountered in DDH U-17-02 at a depth of 114.95-120 m, and it assayed up to 1640 ppm Co, 1298 ppm Ni, 1753 ppm Cu, 2172 ppm Mn, 12901 ppm (1.29%) Ti. A preliminary review of the mineralization encountered within these initial drilling efforts might suggest that the drill holes have encountered a possible “IOCG“-“skarn-” like unit whose orientation lies parallel to the bedding of underlying Sibley group sediments. The “IOCG”-“skarn” unit may be associated with the evolution of known mafic – ultramafic sill like intrusions in the same area (Assessment file 20000007729). The vuggy, copperiferous magnetite unit was believed to represent a replacement of the stromatolitic carbonate unit that outcrops at surface to the west of the Fox Mountain property (Assessment file 20000014680).

Mineral Record Details

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Ministry Contact Information

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