Ontario Geological Survey
Permanent Link to this Record:
MDI52F10NW00036
| Record Name(s) | Long Lead Prospect - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-22 |
| Date Last Modified | 2023-Aug-16 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Contact Bay Area
Latitude: 49° 41' 6.32" Longitude: -92° 52' 56.39"
UTM Zone: 15 Easting: 508488 Northing: 5503625 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F10NW
Point Location Description: A
Location Method: Conversion from MDI
Access Description: The prospect is accessible by several old logging trails branching east from Highway 502 and extending across an extensive swampy area. (OFR5723, p.233)
Work was reported to have been done at the Long Lead Prospect in 1917 (Thomson 1917) but no other published information is currently available, and the location of the workings was uncertain until A. Kozowy (Prospector, Dryden) staked and rediscovered them in 1987. *See 'Deposit Comment - Mineralization' for assay results. (MP138, ROA 1987, p21)
Province: Superior
Geological Age: Precambrian
Mar 25, 2010 (J Bongfelt) - The prospect is situated within massive, amphibolitized, mafic metavolcanic flows intruded by medium-grained gabbro dikes and stocks. The prospect is 800 m north of the contact between granitic rocks of the Atikwa Batholith and metavolcanic rocks of the Eagle Lake Volcanics. The Eagle Lake Volcanics consist predominantly of monotonous, massive and pillowed, mafic metavolcanic flows.' (MP138, p.22)
Mar 25, 2010 (J Bongfelt) - The Long Lead Prospect consists of a 1.2 m to 6.1m wide shear zone striking 350°-360° for approximately 365 m and hosting wide (0.3 m-0.9 m), white, sugary, quartz veins, veinlets, and numerous lensoid and discontinuous stringers which are intimately intermixed with the wall rocks. The majority of quartz veins do not contain significant amounts of pyrite but are rusty and contain some chlorite and hematite. Wallrocks are silicified, variably chloritized, weakly carbonatized, and contain 1-1070 disseminated pyrite with minor chalcopyrite. Wallrocks are commonly fractured and strongly foliated but are not fissile, although narrow fissile zones do occur.' (OFR 5723, p.233)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Hematite | Economic | Ore | ||||
| 15 | Pyrite | Economic | Ore |
Mar 25, 2010 (J Bongfelt) - Grab and chip samples taken by J.R. Parker from the majority of the test pits assayed trace and low anomalous gold values. A 1.5 m chip sample taken by the author in the open cut assayed 120 ppb gold. Grab samples of the wall rock and quartz vein in the first test pit north of the open cut assayed 465 ppb gold and 340 ppb gold respectively. Grab samples of the pyritic wall rock in one of the first test pits at the south end of the shear zone assayed 0.12, 0.14, and 0.15 ounce gold per ton. A grab sample taken by A. Kozowy (prospector, Dryden, personal communication, 1987) from a quartz vein immediately north of the pit assayed 0.26 ounce gold per ton, while a grab sample of the quartz vein taken by the author assayed 0.11 ounce gold per ton. Approx. eight deep test pits and a narrow open cut have been sunk along the entire strike length of the shear zone. (OFR 5723, p.233) Although gold mineralization is erratic and of low grade at the Long Lead Prospect, the fact that consistent gold values have been obtained from altered wall rocks is encouraging. More, careful sampling and prospecting should be done along the strike of the shear zone, especially at the south end of the zone, to determine if there is any extent to the goldbearing wall rocks. (MP138, p.22)
Part - Dryden gold area
Publication Number: ARV26.005 Page: 186 Date: 1998
Author: Thomson E.
Publisher Name: Ontario Bureau of Mines
Location:
Article - Kenora Resident Geologist's area - 1987
Publication Number: MP138.001 Page: 21-22 Date: 1997
Author: Blackburn C.E., Hailstone M.H., Parker J.R., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987
Publication Number: OFR5723 Page: 233 Date: 1989
Author: Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
Journal - Kenora Property Visit File, F10NW00036, Long Lead (proof of assay results)
Publication Number: Date: 2010
Author:
Publisher Name:
Location: Kenora RGP office
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