Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001678

Record: MDI000000001678

General

Commodities

Primary Commodities: Gold, Silver, Copper

Location

Township or Area: Syine

Latitude: 48° 49' 30.31"    Longitude: -86° 55' 47.36"

UTM Zone: 16    Easting: 505151   Northing: 5408014    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D15SW

Point Location Description: Central area of Cliff Zone.

Location Method: Field Visit with GPS

Access Description: The Jackfish property is located approximately 20 km east of Terrace Bay. Access to the mineralized zones is obtained via an all-terrain vehicle trail north of the parking lot at Jackfish cabins on Highway 17, approximately 20 km east of Terrace Bay.

Exploration History

1984: Highmark Resources Ltd.& McMillan Energy Ltd.: Geology, Geochemistry, Geophysics, Magnetometer, VLF-EM & IP. 2010-2014: J.R. Hamel, J. Bond, R. Renner, W. Richards: prospecting, sampling, overburden stripping, creek and lake. 2015-16: W. Richards carried out prospecting and stripping. 2018: Sanatana Resources Inc. optioned the property. 2010-2014, J.R. Hamel, J. Bond, R. Renner, W. Richards: prospecting, sampling, overburden stripping, creek and lake sediment sampling, diamond drilling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Mar 27, 2014 (Mark Puumala) - Excerpt from OFR 6293 The Jackfish occurrence consists of two gold mineralized showings known as the Cliff Zone and North Zone. Both showings are located within the Terrace Bay Batholith near its eastern margin. The Terrace Bay Batholith is a large (25 by 8 km) late-tectonic intrusion that is dominated by massive, homogeneous, equigranular, medium-grained granodiorite (Marmont 1984; Beakhouse 2001). Although most of the intrusion is relatively undeformed and does not contain a pervasive penetrative fabric, spatially restricted zones of intense fracturing, shearing and veining have been noted. The intrusion is also cross-cut by numerous dikes of various compositions and ages. These include probable Neoarchean aplite and pegmatite dikes of alkali feldspar granite and quartz diorite composition, and probable Proterozoic lamprophyre and olivine diabase dikes (Marmont 1984). The Terrace Bay Batholith intrudes a metavolcanic rock-dominated supracrustal sequence that is exposed to the southeast of the Cliff Zone. Rock types mapped near this contact by Walker (1967b) include felsic agglomerate and intermediate to mafic fragmental rocks.

Lithology

Mineralization

Mineralization Comments

Jul 15, 2016 (Mark Puumala) - Excerpt from OFR 6293 Cliff Zone The Cliff Zone consists of a series of parallel, sulphide-mineralized quartz veins that are hosted in variably altered granodiorite and are exposed on an east-northeast (070)- trending cliff face whose base was examined over a length of approximately 60 m during the 2013 site visit. The cliff face parallels the inferred contact between the Terrace Bay Batholith and metavolcanic rocks, which is located approximately 70 m to the south (Walker 1967b). In the central portion of the cliff face, four parallel quartz-carbonate veins, spaced roughly 1 to 2 m apart, were noted. The veins are of variable thickness, ranging from a few centimetres to 20 cm wide and occupy brittle fractures in the host granodiorite. The veins strike approximately north, dip 45 degrees west, and are mineralized with varying quantities of pyrite, chalcopyrite, galena, specular hematite, malachite and native silver. Sulphides range from fine-grained disseminated grains to massive pods of coarse-grained material. Between veins, the host granodiorite exhibits strong silicification within a few centimetres immediately adjacent to the veins, while the intervening material appears to be hematitized and is mineralized with disseminated pyrite. Eight grab samples were collected for assay from the Cliff Zone (4 each in 2012 and 2013). The highest assay results obtained were 1.28 and 0.81 ounce Au per ton. Both of these samples were collected from quartz vein material mineralized with disseminated to massive sulphides, including pyrite, chalcopyrite, and galena. Sampled vein material mineralized with lesser quantities of chalcopyrite generally reported lower gold values. A sample of granodiorite collected approximately midway between two of the Cliff Zone veins (MPWR1302) returned 430 ppb Au.

May 04, 2018 (Therese Pettigrew) - Sample MPWR1306 collected by the OGS assayed >25,000 ppm Cu from a quartz-carbonate vein. Sample MPWR1307 collected by the OGS assayed 5625 ppm Cu from a quartz-carbonate vein. Gold at the Cliff Zone occurs in a series of narrow (<20 cm wide), sulphide-mineralized quartz-carbonate veins that strike north and dip 45 degrees towards the west. Anomalous gold values are also obtained from altered granodiorite. The Cliff Zone is located in close proximity to the SE margin of the Terrace Bay Batholith and a north- to northwest-trending fault zone that was mapped by Walker (1967) in the metavolcanics and granodiorites east of Sawmill Lake (AFRI 2.56425).

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Sep 12, 2012

Geologist: Dorothy Campbell

Notes: See deposit comments.

Date: Aug 29, 2013

Geologist: Mark Puumala

Notes: See deposit comments.

References

Mono - The Terrace Bay batholith and associated mineralization

Publication Number: OFR5514 Date: 1984

Author: Marmont S.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of the Jackfish-Middleton area, District of Thunder Bay

Publication Number: R050 Date: 1997

Author: Walker J.W.R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Report of Activities 2013, Resident Geologist Program, Thunder Bay South Regional Resident Geologist Report: Thunder Bay South District

Publication Number: OFR6293 Date: 2014

Author: Puumala M.A., Campbell D.A., Tuomi R.D., Debicki R.L., Wilson A.C., Moses P., Brunelle M.R.

Publisher Name: Ontario Geological Survey

Location:

Mono - Nature, Timing and Significance of Intermediate to Felsic Intrusive Rocks Associated with the Hemlo Greenstone Belt and Implications for the Regional Geological Setting of the Hemlo Gold Deposit

Publication Number: OFR6020 Date: 2001

Author: Beakhouse G.P.

Publisher Name: Ontario Geological Survey

Location:

Map - Jackfish-Middleton area, Thunder Bay District

Publication Number: M2107 Date: 1967

Author: Walker J.W.R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Schreiber-Terrace Bay High Density Regional Lake Sediment and Water Survey, Northwestern Ontario

Publication Number: OFR5964 Date: 1997

Author: Dyer R.D.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Schreiber-Hemlo Area Lake Sediment Survey: Gold and PGE Data - Operation Treasure Hunt

Publication Number: OFR6036 Date: 2000

Author: Ontario Geological Survey

Publisher Name: Ontario Geological Survey

Location:

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