Ontario Geological Survey
Permanent Link to this Record:
MDI42D14NE00008
| Record Name(s) | Owl Lake Molybdenum - 1920, Pipawa - 1971 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Jan-09 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Molybdenum
Secondary Commodities: Gold, Copper
Township or Area: Lower Aguasabon Lake Area
Latitude: 48° 56' 19.91" Longitude: -87° 1' 50.56"
UTM Zone: 16 Easting: 497751 Northing: 5420659.99 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D14NE
Point Location Description: Showing location in Assessment report 20000007661
Location Method: Data Compilation
Access Description: The occurrence is located approximately 0.8 km south of the southwest corner of Owl Lake, about 17.7 km north-northeast of Terrace Bay (claim TB3809, claim map G-599, Lower Aguasabon Lake). Access may be gained by air to Owl Lake or by all-weather road which extends north from Terrace Bay to the Aguasabon River, which can be crossed by boat. The showings are approximately 0.8 km (on foot) from the eastern shore of the river along a trail (old drill road).
1920: Surface trenching, pitting and diamond drilling carried out on patented claims TB3694 and TB3809. 1937: Examination and sampling of showings undertaken by M.W. Bartley. 1958: Stripping, rehabilitation of pits, sampling and geological mapping conducted by G.A. Checklin for Prosco Limited. 1964: Claim group staked by J.E. Halonen. 1965: All interest was transferred to Zenmac Metal Mines Ltd. 1966: 4 diamond drill holes totalling 159.7 m were drilled on TB113457 and a report submitted by M. Ogden. 1969: Soil geochemical and geophysical (magnetometer) surveys were conducted by M. Ogden. 1971: A survey was completed but no lease was issued. 50% interest was transferred to Pipawa Explorations Limited. 1972: A detailed geological property map was prepared by Halet, Broadhurst and Ogden Engineering Ltd. for Zenmac and Pipawa. 1973: The claims lapsed. 1982: H. Burke and D.E. Christianson restaked the showings and all interest was transferred to Pipawa Explorations Ltd. 1983: Soil geochemical survey was conducted by G.L. Mealey and R.H. Morse wrote a compilation report. 1984: Claims lapsed and were restaked by A.H. McLellan. 1990: Claims investigated by E. and D. Christianson as part of D. Fairbairn estate. 1998: B. Fowler carried out prospecting and sampling. 2012: Superior Prospects Inc. carried out a soil survey, prospecting, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 12 | 42D15NW0083 | 42D15NW0083 |
| 2.52445 | 20000007661 | 20000007661 |
| 63.5720 | 42D15NW0002 | 42D15NW0002 |
| 63.2650 | 42D14NE0090 | 42D14NE0090 |
| 2.849 | 42D14NE0089 | 42D14NE0089 |
| 2.6541 | 42D15NW0047 | 42D15NW0047 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The occurrence is classed as a 'calc-alkalic porphyry' deposit. The mineralized zone consists of a plug-like body of granite intruding syenite gneiss and hornblende schists. The schist appear to have been derived from andesite tuffs. Veins of glassy quartz vary in strike. The main veins have a general E-W trend and dip steeply to the south. They range in width from several centimeters to 1 m, and the maximum length is 30 m. The zone has a length of 213 m from north to south. To the north, the veins become shorter and narrower. Mineralization is quite uniform and plentiful. The occurrence of the mo is very general, as it is found in the veins, at the contact of the quartz and granite, in the granite, and along the cleavage planes of some of the feldspars. Carter (1982) notes that mo mineralization occurs in granitic rocks within 91 m of the contact of granitic and mafic rocks in the southeastern part of the map area. The mineralization consists of disseminated mo occurring as blebs and rosettes up to 5 mm, in longest dimension or as irregular stringers, along with disseminated grains of py and minor amounts of cp in massive leucocratic, medium to coarse grained biotite granitic rocks and associated intrusive aplite and pegmatite dykes and quartz veins. The main vein on the property was on average 61 cm wide and about 1 m long. The average strike was east with a dip to the south of 70 to 85 degrees.
| Rock Type | Rank | Composition | Texture | Relationship | Granite | 1 | Host |
|---|---|---|---|---|
| Syenite | 2 | Gneiss | Near | |
| Schist-Unsubdivided | 3 | Hornblende | Near | |
| Vein | 4 | Quartz | Host | |
| Mafic Tuff | 5 | Amphibolitized | Tuff | Near |
Dec 07, 2005 (B Nelson) - The granite is pegmatitic in character, consisting principally of quartz and feldspar with a predominance of quartz.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Molybdenite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Veins |
Dec 07, 2005 (B Nelson) - A grab sample taken by M.W. Bartley in 1937 returned an assay of 1.68% Mo abd 0.03 oz/ton Au. Ogden (1966) reports that the Mo content is a direct function of the amount of quartz in the rock. For example, 2 inches to 7 inches of quartz per 10' of core in the granite assayed 0.01% MoS2, 13 nches of quartz per 10' assayed 0.06% MoS2 and 30 inches per 10' ran 0.2% MoS2. Sampling by Checklin (1958) for Prosco Ltd. yielded assays including 1.05% and 2.87% MoS2. Morse (1984) reports that soil geochemistry returned Mo values commonly over 10 ppm and sometimes exceeding 80 ppm, which delineated the geochemical Mo anomaly in areas of Mo mineralization. Bartley (1939) writes that the showing was explored by trenching and stripping over the whole length of the intrusive and by a series of holes put down to ascertain the extension and values at depth. The drilling results indicated the mineralization to be so scattered that the average content was less than 1% Mo. Samples by Resident Geologist personnel returned: 90-BOW-2: 0.002 oz/ton Au; nil Ag; 0.006% Mo from Granite with less than 1% py and mo. 90-BDC-12: nil Au; nil Ag; 2.566% Mo from quartz vein with 20% Mo.
Jun 14, 2019 (Therese Pettigrew) - A sample collected by B. Fowler in 1998 returned 2.85% Mo from the shaft vein. Samples collected by Superior Prospects in 2012 returned values up to 3360 ppm Mo (Sample 62851), 2080 ppm Mo (Sample 62864) and 2560 ppm Mo (Sample 62866) (Assessment report 20000007661). Molybdenum occurs three ways: 1) disseminated along with other sulphides in granite (+ pyrite + pegmatite + aplite); 2) along fractures and joints in granite; and 3) in quartz veins, with up to 20% moly patches (M. Smyk field notes, 1990).
Date: Feb 06, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the occurrence July 30, 1990 and July 31, 1990.
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:
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 - Cairngorm Lake area, Thunder Bay District
Publication Number: M2112 Scale: 1:31,680 Date: 1997
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
Location:
Part - The northeastern part of the Schreiber area
Publication Number: ARV47-09.002 Page: 40 Date: 1998
Author: Bartley M.W.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Precambrian geology of the Terrace Bay area, northeast sheet, Thunder Bay District
Publication Number: P2557 Scale: 1:15,840 Date: 1982
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Jackfish-Middleton area, District of Thunder Bay
Publication Number: R050 Page: 35 Date: 1997
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
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 - Molybdenum deposits of Ontario
Publication Number: MDC007 Page: 71 Date: 1968
Author: Johnston F.J.
Publisher Name: Ontario Dept. of Mines
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Part - The northeastern part of the Schreiber area
Publication Number: ARV47-09.002 Date: 1998
Author: Bartley M.W.
Publisher Name: Ontario Dept. of Mines
Location:
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