Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52H09NE00015

Record: MDI52H09NE00015

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Summers

Latitude: 49° 37' 47.13"    Longitude: -88° 0' 37.62"

UTM Zone: 16    Easting: 427030   Northing: 5497957    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E12NW, 42E12SW, 52H09NE, 52H09SE

Point Location Description: AMIS location

Location Method: Data Compilation

Exploration History

1929-1930: Mining Corporation of Canada Limited prospected the area and carried out an electromagnetic survey. 1961: Ventures Limited carried out geologic mapping of the Cryderman claim group which consisted of 20 claims adjoining the east boundary of the Leitch Gold Mine property. In conjunction with this mapping, a study of the Leitch Gold Mine vein controls was carried out. 1994: J. McMahon completed a program of prospecting, sampling, geology and VLF-EM. 1994: Morning Dew Exploration carried out a program of prospecting, mechanical stripping and sampling for J. McMahon and M. Rentz on the latter two's claim group. 2008: Kodiak Exploration Ltd. drilled 2 DDH totalling 314 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Geology Comments

Nov 04, 2019 (Therese Pettigrew) - The East Leitch Project property is situated on the contact between a finger of the central volcanic panel and the overlying southern sedimentary panel within the Beardmore Geraldton belt (Assessment report 20000004212).

Lithology

Lithology Comments

Nov 04, 2019 (Therese Pettigrew) - The property is underlain by predominantly mafic to intermediate volcanics. Clastic sediments dominated by feldspathic wacke occur along the northern boundary of the property. The volcanics occupy the nose of a westerly plunging anticline. The dominant rocks are massive, dark green, fine grained to aphanitic, mafic to intermediate flows. Within the flows are thin lapilli tuff units with fragments more felsic than the groundmass, capped with thin pillow tops. Occasional amygdaloidal intercalations of similar composition to the massive flows, contain up to 30% amygdules 2-4 cm in size and composed commonly of quartz, carbonate and chlorite. Both clastic and chemical sediments underlay the northwest portion of the property as well as the immediate surrounding area. The clastic sediments are dominated by feldspathic wackes with lesser thin argillite and polymictic conglomerate interbeds. The conglomerate consists of sub-pebble to cobble sized clasts in a fine to very coarse sand groundmass. Clast compositions include unfoliated granite, fine-grained felsic volcanic, quartz porphyry, fine-grained mafic volcanic, vesicular buff-white volcanic, jasper pebbles and quartz. The chemical sediments in the southern sedimentary panel consist of oxide facies (hematite and/or magnetite±jasper) banded iron formation. The width of the formation is variable up to the approximate 15 metre width south of the East Leitch Project property. Late stage dikes include synvolcanic feldspar and quartz feldspar porphyry dykes as well as diabase dykes. The porphyritic dykes are narrow «4 metres) and contain rounded, 3 to 5 mm. quartz eyes and 1 to 3 mm anhedral feldspar phenocrysts. The diabase occurs on the property as a northerly trending dyke which transects the property. This diabase is texturally and compositionally similar to diabase sheets intersected at both the Northern Empire Mine and the Leitch Gold Mine (Assessment report 20000004212).

Mineralization

Mineralization Comments

Nov 04, 2019 (Therese Pettigrew) - The No. 1 Vein has been exposed by trenching for 152 m in an E-W direction. The quartz varies between 30 cm to 2 m in width and is accompanied by a pronounced wall rock alteration (Assessment report 42E12SW0094). DDH EL08-01 returned up to 9.92 g/t Au over 1.6 m from quartz veining in a sheared mafic metavolcanic (Assessment report 20000004212).

Mineral Record Details

References

Part - The western part of the Sturgeon River area (Sturgeon R.-Beardmore section)

Publication Number: ARV45-02.002 Date: 1998

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date: 1996

Author:

Publisher Name:

Location: Thunder Bay RGP

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Ministry Contact Information

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