Ontario Geological Survey
Permanent Link to this Record:
MDI52O12NE00007
| Record Name(s) | Saddle Creek - 1979, Baggy Lake A - 1979, Mextor (Kennco) - 1979 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1979-Sep-28 |
| Date Last Modified | 2022-Jun-07 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Zinc
Township or Area: Baggy Lake Area
Latitude: 51° 37' 51.11" Longitude: -91° 34' 37.46"
UTM Zone: 15 Easting: 598483.818 Northing: 5720942.113 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O12NE
Point Location Description: General
Location Method: Conversion from MDI
1960: Diamond drilling by Castlebar Silver & Cobalt Mines in the area between Lang Lake and Saddle Lake. 1968-1972: Bochawna Copper Mines Ltd. and the Hanna Mining Company conducted an extensive exploration program in the area north of Lang Lake, including a diamond drilling program that outlined a copper deposit. 1969-1971: The Algoma Steel Corporation Ltd. conducted extensive diamond drilling and geophysics in northwest of Lang Lake for iron ore. 1969-1970: Card Lake Copper Mines Limited conducted grid mapping geophysics and diamond drilling for gold and base metals in the Saddle Lake, Boyes Lake, Card-Cannon Lakes, and Heinz Lake areas. 1970: Mextor Mineral Ltd. and Kennco Exploration Limited conducted geophysics and diamond drilling for base metals in the Saddle Lake area. 1984-1986: Duration Mines conducted geophysics, grid mapping and diamond drilling on the southern arm of the Lang Lake greenstone belt for base metals mineralization. 1985-1986: Geological, geochemical and geophysical surveys in the western Lang Lake area by Utah Mines. 1991-1992: Noranda Exploration Company Limited conducted grid mapping, geophysics and diamond drilling for base metals in the Lang Lake and Saddle Lake areas. 2003-2007: East-West Resource Corporation conducted geological and geophysical surveys and diamond drilling of the Lang Lake copper deposit.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52O12NE0011 | 52O12NE0006 | 52O12NE0006 |
| 14 | 52O12NE8941 | 52O12NE8941 |
| 52O11SW0047 | 52O11SW0028 | 52O11SW0028 |
| 52O12NE0010D1 | 52O12NE0002 | 52O12NE0002 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Lang Lake
Geological Age: Neoarchean
Mar 30, 2007 (Mark Puumala) - The area geology is described in MDI52O12SE00012.
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| Silica | Alteration | Silicification | 1 | ||||
| Chlorite | Alteration | Chloritic | 2 | ||||
| Sericite | Alteration | Sericitization | 3 | ||||
| Garnet | Alteration | Garnetization | 4 | ||||
| Actinolite | Alteration | 5 |
Mar 30, 2007 (Mark Puumala) - MacDougall (1992) indicates that the Saddle Lake/Saddle Creek area is largely underlain by pillowed mafic metavolcanic rocks. These mafic flows are intercalated with felsic metavolcanics (quartz crystal tuff and rhyolite) and chert exhalite horizons. A relatively wide felsic metavolcanic sequence (300 to 400 m wide) consisting of strongly chloritized blue quartz-eye porphyritic rhyolite and coarse-grained volcanic fragmental rocks is exposed along the northwest shore of Saddle Lake. This sequence extends for a minimum of 1 km to the west-northwest, and is also interpreted to extend to the southeast below the surface of Saddle Lake (MacDougall 1992). Alteration mineral assemblages that have been observed by MacDougall (1992) include chlorite-garnet-actinolite, silicification and local sericitization. The Saddle Creek occurrence is exposed at surface in a small pit, and is interpreted by MacDougall (1992) to be located on the flank of the felsic metavolcanic sequence. Mineralization is described by MacDougall (1992) as consisting of banded semi-massive to stringer pyrrhotite-pyrite with trace chalcopyrite, while alteration reportedly consists of intense chlorite-garnet alteration and localized silicification and sericitization. Preliminary whole-rock analysis of samples collected from the mineralized zone and adjacent felsic metavolcanics was reported by MacDougall (1992) to have been indicative of sodium depletion, which is considered to be a favourable indication for volcanogenic massive sulphide-type (VMS) mineralization. MacDougall (1992) reports that assays for samples collected from this occurrence produced anomalous copper and zinc values. However, these results were not provided. Mextor Minerals and Kennco Exploration (AFRI# 52O12NE0002) reported assay values of up to 0.09% Cu, 0.02% Ni and 0.01% Zn over 1.3 m in ddh K-4 during a 1970 diamond drilling program at this location.
| Rank | Classification |
|---|---|
| 1 | VMS Base Metal |
| Rank | Characteristic |
|---|---|
| 1 | Massive |
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