Ontario Geological Survey
Permanent Link to this Record:
MDI000000002055
| Record Name(s) | Span Lake South - 2010, F Zone - 1990 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2017-Feb-03 |
| Date Last Modified | 2023-Jan-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Moss
Latitude: 48° 33' 23.24" Longitude: -90° 40' 26.71"
UTM Zone: 15 Easting: 671623 Northing: 5380763 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B10SE
Point Location Description: DDH location and log
Location Method: Based on Assessment
Access Description: Access to the Span Lake area is by the old Hermia Lake Road to Burchell Creek and then by an overgrown drill road leading south for approximately 500 m to the area of Inco/Foundation work sites.
1902: The North Coldstream deposit first began production in 1902 as the Tip-Top Mine. Approximately 1 312 000 lbs of copper were produced in between 1902 and 1917. 1943: Frobisher Exploration Company completed extensive exploration in the area of the North Coldstream Mine and in 1943 the company estimated at least a million tons of ore in the ground. 1950’s and early 1960: Consolidated Mining and Smelting Company of Canada Ltd., Martin McNelly Mines Exploration and Canico, conducted geophysical surveys. 1957: Coldstream Copper Mines Ltd, later known as North Coldstream Mines, purchased the mine and began operations in June. 1960-67: Noranda operated the mine producing 103 million pounds of copper, 22,000 ounces of gold, and 440,000 ounces of silver from 2.7 million tonnes of ore. Reserves were depleted and the mine was closed in 1967. In the Span Lake Area: 1982: Canico carried out airborne electromagnetic, magnetic and radiometric surveys with follow-up prospecting program. 1983: Canico undertook grid cutting, VLF and magnetometer surveys were completed with a geological reconnaissance and rock-sampling program. 1987-90: Inco prospecting, mapping, trenching, and diamond drilling identifing 9 gold zones, termed from A through I. Eight DDH (1 225m) in 1987, 18 DDH (3 407 m) and 13 DDH (2 132 m) in 1989. 1990: Central Crude Ltd (“Central Crude”) optioned Inco¿s claims over the Span Lake with Noranda the operator. The area was referred as the Broad Horizon property. 2006: Alto Ventures purchased 26 claims covering the Span Lake area from Inco Ltd. 2009: Foundation Resources Inc. focused on confirming some of the better Inco channel samples at the A, B and C Zones with some channel sampling. 2010: A 38-hole, 10 107 m drill program was completed by Foundation of which two-holes, SL10-01 and SL10-TW, drilled 377 m testing the Span lake showing.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52B10SE0175 | 52B10SE0175 | 52B10SE0175 |
| 2.43994 | 20000004522 | 20000004522 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Shebandowan
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Shesred |
|---|
Feb 03, 2017 (Andrew Tims) - The Span Lake Block mainly consists of aphyric to quartz porphyritic flows (dacite and rhyolite), minor fragmental rocks, and their derived schists. These rocks show shades of gray, cream, light green and pink colours depending upon the type of alteration that has affected them. Intermediate to felsic intrusive rocks, including sills/dykes of aphyric to feldspar-porphyritic diorite, quartz and quartz-feldspar porphyries, intrude the volcanic rocks. The intrusive rocks are also affected by alteration similar to that of their volcanic host. In addition to the said alteration, these rocks are also variably chloritized, albitized and silicified. Minor dykes and sills of granodiorite to granite, syenite and lamprophyre intrude sub-concordantly to volcanic strata and earlier fabrics.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
Feb 03, 2017 (Andrew Tims) - Inco DDH 78458 yielded 2.44 gpt over 1.5 m at 68 m depth and 3.39 gpt over 0.35 m at 247.8 m.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
MonoMap - Geology of the Moss Lake area, District of Thunder Bay
Publication Number: R085 Date: 1970
Author: Harris F.R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Moss Township
Publication Number: M2624 Scale: 1:20,000 Date: 1997
Author: Osmani I.A.
Publisher Name: Ontario Geological Survey
Location:
Book - A technical review of the Moss Lake gold property, including a mineral resource estimate, Moss Township, Northwestern Ontario. Report prepared for Moss Lake Gold Mines Ltd by Watts, Griffis and McOuat Ltd, 98p.
Publication Number: 43-101 Date: 2006
Author: Sullivan, J. R., El-Rassi, D. A., and Kociumbas, M. W.,
Publisher Name: SEDAR
Location:
MonoMap - Geology and Mineral Potential of Moss Township, District of Thunder Bay
Publication Number: OFR5865 Date: 1993
Author: Osmani I.A.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology and Mineral Potential, Greenwater Lake Area, West-Central Shebandowan Greenstone Belt
Publication Number: R296 Date: 1997
Author: Osmani I.A.
Publisher Name: Ontario Geological Survey
Location:
Thesis - Petrogenesis of the late Archean Quetico alkaline suite intrusions, western Superior Province, Canada
Publication Number: M.Sc. Date: 2004
Author: Lassen, B.,
Publisher Name: University of Ottawa
Location: RGP Files
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