Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SW00024

Record: MDI42D14SW00024

General

Commodities

Primary Commodities: Gold, Sulphur/Pyrite, Zinc

Secondary Commodities: Cobalt

Location

Township or Area: Priske

Latitude: 48° 47' 7.25"    Longitude: -87° 15' 4.13"

UTM Zone: 16    Easting: 481551.66   Northing: 5403624.73    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SE, 42D14SW

Point Location Description: Trenches, diamond drill holes.

Location Method: Conversion from MDI

Access Description: The occurrence is located in Priske Township approximately 2 km south-southeast of Schreiber (Mining Location R609, claim map G-631, Priske Township). Access may be gained via the old Schreiber dump (Worthington Bay) road which branches off Highway 17 at a point approximately 4.4 km east of Schreiber. The road extends approximately 3 km south and west to a small claearing. The old pits are located on the north side of the road in an are of gossan.

Exploration History

1897: A prospector named Morley sold claim R606 to the Davis Sulphur Ore Co. who carried out bulk sampling, trenching, test pitting and shallow shaft sinking. Several small trenches were blasted on the Morley Road occurrence, probably around this time. 1923: R.E. Horton carried out surface work on R608, R609 and R610 under the direction of W. Longworth. 1948: Base metal sampling was undertaken by Ironlake Exploration Ltd. 1955-1956: The property was mapped and sampled by Thorncrest Explorations. One diamond drill hole, 119.5 m in length, was drilled near the showings as part of a drill program to test extension(s) of the nearby Morley Pyrite occurrence. 1960: Temanda Mines Limited conducted geological programs and diamond drilling, and wrote a report on the Schreiber Property. 1983: Morley pyrite claims (R606, R608, R609, R610, R660, R665), formerly owned by T. Armstrong, were optioned to J.E. Bond II and D. Mocnik. The occurrence was optioned and investigated by New Ambrose Resources Inc. following an airborne geophysical (VLF EM magnetometer, EM) survey by Aerodat Ltd. 1984: Lincoln Resources Limited optioned the property and conducted line cutting and geophysical surveys (Magnetometer and Max Min II). 1985: Lincoln Resources Limited carried out stripping, trenching, geological mapping and prospecting on the property. D.E. Christianson discovered gold by prospecting in the vicinity of the Line 20 W trench. 1986: Drilling by Lincoln Resources was carried out in 1986. Further stripping and trenching was conducted in the Line 20 W trench area. 1989: D.E. Christianson conducted prospecting, and sampling with assistance from an OPAP grant. 1994: D.E. Christianson conducted a VLF geophysical survey, mapping, prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - A fairly large area of gossan occurs on the south east side of a hill on the way to the Morley Pyrite occurrences. A trench or pit is on the north side of the access road. A second pit or trench is located about 30 m (100 ft.) west and about 2 m north of the road. These sulphide occurrences are associated with rhyolite to rhyodacite (rhyolite agglomerate?) type volcanic rocks. Felsic fragmental (pyroclastic) rocks also occur in the immediate area. The Road Showing appears to occupy a north south trending fracture zone approximately 3 m (10 ft.) wide. The Morley Road occurrence may represent a highly fractured, brecciated and contorted section of the main Morley iron formation, a thrust faulted and possibly stacked section of the main iron formation or a separate iron formation. Harper and Holbrooke (1960) described the Morley property as consisting of two separate iron formations from 30 to 110 feet wide. The Morley Road iron formation is said to trend east to southeast for 1,700 feet across the south central part of claim R 606 and extends an additional 550 feet southeasterly into claim R 609 to where it is cut off b a major N35?E striking fault. This iron formation varies in width from 50 to 120 feet and, near its southeastern end on claim R 609, is mineralized by a gossan area 200 feet long by 100 feet wide (Harper and Holbrooke 1960). Secondary recrystallization and pyrrhotite replacement appears to have occurred at the Morley Road occurrence. In other areas of the Schreiber greenstone belt, oxide facies iron formation which has been faulted, fractured and brecciated commonly displays sulphide replacement of the oxide layers (Twomey B.I.F., Schreiber Pyramid, Joa Walton, Otisse). Occasionally gold mineralization is associated with the replacement sulphides.

Lithology

Lithology Comments

Dec 07, 2005 (B Nelson) - The sulphide occurrences are associated with rhyolite to rhyodacite (rhyolite agglomerate?) type volcanic rocks. Felsic fragmental (pyroclastic) rocks also occur in the immediate area. Flood (1986) described high gold values occurring in a gossan layer stratigraphically below a chert unit and directly above massive sulphides. Two laminated chert units 0.5 to 1.2 m wide and relatively flat lying were observed in the area. A sulphide poor unit (<1% py) is underlain by a grey, sulphide rich (5 10% sulphides) chert unit. Several styles of gold mineralization are suggested and detailed sampling has identified gold values in massive pyrite, gossan, laminated chert and pyritic quartz veins. Flood (1986) also stresses the importance of pyrite as a major contributor to the gold content of various lithologies.

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - Samples (86 BDM 01-05) collected by D. Mochnik and submitted to the Resident Geologist Program from the Morley Road occurrence assayed up to 0.09 ounce per ton Au from a graphitic pyroclastic and 0.06 ounce per ton Au from the upper gossan. Diamond drill hole No. 1 of the Thorncrest Exploration Ltd. 1956 drill program intersected several mineralized zones. Assays from the drilling included a 61 cm section assayed 0.15 ounce per ton Au and trace copper near surface, while a 10 cm section at depth assayed 0.08% Cu, 16.69% Zn and 2.07% Pb. Harper and Holbrooke (1960) took six representative samples of the Morley Road or 'second' iron formation including the sulphides and gossan material average 2.7% zinc. D.E. Christianson discovered economic gold values by prospecting northwest of the Morley Road occurrence. The L 20W trench at 7 + 00 N was stripped and trenched in 1985 and 1986. Flood (1986) described high gold values of up to 4.2 g/t Au across 7.1 m (23.5 feet), and Gow (1986) described anomalous gold values of 4.6 ppm Au and 2.8 ppm Ag over 7.16 m, including 1.22 m grading 18.6 ppm gold and 7.8 ppm silver. Assay highlights include 12580 ppb Au across 0.69 m in gossan, 5215 ppb Au across 0.30 m in gossan and 4250 ppb Au across 0.69 m of iron stained chert and pyritized quartz vein (Flood, 1986). Of 36 samples taken from the stripped area at the L20 W trench, 10 of the samples assayed over 500 ppb Au (Flood 1986). Diamond drilling in 1986 failed to intersect significant gold mineralization (Gow 1986) possibly due to the structural complexity of this area. Harper and Holbrooke (1960) describe three types of mineralization on the Morley Property: 1) Sulphide bodies such as the Morley Pyrite and Morley High Grade; 2) Quartz carbonate veins such as the Morley High Grade Vein, and; 3) Copper gold mineralization in a shear zone such as the McKenzie Vein.

Mineral Record Details

Site Visit Information

Date: Feb 25, 1997

Geologist: B Nelson

Notes: Resident Geologist personnel visited the occurrence May 19, 1983; June 17, 1983; June 29, 1983; August of 1984; July 4, 1985; October of 1985; July of 1987; August of 1989; June of 1990. Samples taken by Resident Geologist personnel returned the following results: 83-BMR-1: 0.01 oz/ton Au, 0.13 oz/ton Ag, 660 ppm Zn, 158 ppm Co (No. 1 Trench). 83-BMR-2: <0.01 oz/ton Au, 0.17 oz./ton Ag, 101 ppm Zn, 22 ppm Co (No. 1 Trench). 83-BMR-3: <0.01 oz/ton Au, 0.11 oz/ton Ag, 91 ppm Zn, 720 ppm Co (No. 2 Trench (west road trench).

References

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440    Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Page: 515-520  Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

Map - Schreiber area, District of Thunder Bay, Ontario

Publication Number: ARM47J Scale: 1:31,680    Date: 1997

Author: Bartley M.W., Harcourt G.A.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Geology of Schreiber-Terrace Bay area, District of Thunder Bay

Publication Number: OFR5692 Page: 129-131  Date: 1988

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Part - The southwestern part of the Schreiber area

Publication Number: ARV47-09.001 Page: 23-25  Date: 1998

Author: Harcourt G.A.

Publisher Name: Ontario Dept. of Mines

Location:

Compend - Report of activities, 1983, Regional and Resident Geologists

Publication Number: MP117 Page: 93  Date: 1984

Author: Kustra C.R.

Publisher Name: Ontario Geological Survey

Location:

Map - Schreiber-Duck Lake area, District of Thunder Bay

Publication Number: ARM30A Scale: 1:63,360    Date: 1998

Author: Hopkins P.E., Tanton T.L.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Schreiber sheet, District of Thunder Bay, geological compilation series

Publication Number: P0360 Scale: 1:126,720    Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Precambrian geology of the Schreiber area, east part, Thunder Bay District

Publication Number: P2391 Scale: 1:15,840    Date: 1981

Author: Carter M.W.

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