Ontario Geological Survey
Permanent Link to this Record:
MDI000000000280
| Record Name(s) | Shonia #6 - 2004 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2007-Mar-28 |
| Date Last Modified | 2022-Jun-08 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: McVicar Lake Area
Latitude: 51° 34' 39.35" Longitude: -91° 27' .78"
UTM Zone: 15 Easting: 607388.998 Northing: 5715196.998 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O11SW
Point Location Description: Assessment file map (McKay 2004).
Location Method: Data Compilation
1950: Chellow Gold Mines Ltd. Conducted geological mapping, trenching and diamond drilling in the Lower McVicar Lake area. 1959-1961: Kenlew Mines Ltd conducted geological mapping, stripping, trenching and diamond drilling in the lower McVicar Lake area and the area to the east of McVicar Lake. 1968-1969 New Jersey Zinc Exploration Company (Canada) Limited conducted geological mapping, geophysics, trenching and limited diamond drilling for VMS mineralization in the area north of north of McVicar Lake. 1971 Hoey Syndicate conducted geological mapping, trenching and geophysics for Cu-Ni-PGE mineralization in the lower half of the McVicar Lake area. 1977-1981, 1987, 1991 Cominco Ltd conducted extensive airborne geophysical surveys as well as diamond drilling over the McVicar Lake and Andy lake areas, well as limited diamond drilling in McVicar and Cannon Lake areas for gold and base metals. 1985-1994 Utah Mines, later BHP-Utah Mines, and then simply BHP conducted extensive grid mapping, geophysics and diamond drilling on the area surrounding McVicar Lake resulting in the discovery of the Altered Zone and Lower McVicar Lake structural zones and several associated gold showings. Utah Mines also conducted extensive work in the western Lang Lake area. 2001-2003 Prospector Consolidated Inc and Continuum Resources Ltd, conducted extensive trenching and limited diamond drilling for gold on the old BHP-Utah Mines property in the McVicar Lake area.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.27178 | 52O11SW2003 | 52O11SW2003 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Lang Lake
Geological Age: Neoarchean
Mar 28, 2007 (Mark Puumala) - A description of the area geology is provided in MDI52O11SW00007.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Host |
|---|---|---|---|---|
| Tonalite | 2 | Contains | ||
| Mafic lava flow-unsubdivided | 3 | Near | ||
| Gabbro | 4 | Gabbro | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| Carbonate | Alteration | Carbonatization | 1 |
Mar 28, 2007 (Mark Puumala) - McKay (2004) indicates that the Shonia #6 gold mineralization occurs in narrow (2 to 20 cm) quartz +/- Fe-carbonate veins hosted by sheared and altered tonalite. The mineralization occurs in a portion is an approximately 140 m wide tonalite sill that is bounded to the north by mafic metavolcanics and to the south by gabbro. The tonalite is reported to be cross-cut by narrow mafic dikes and contains possible xenoliths of gabbro. The tonalite is cross-cut by a number of westerly- to northwesterly-trending shear zones and variably-oriented quartz veins. McKay (2004) indicates that the shear zones exhibit iron carbonate alteration and contain disseminated pyrite, while the quartz veins are typically mineralized with minor quantities of disseminated pyrite. The most significant quartz vein is up to 1.1 m wide, is exposed over a strike-length of 70 m, and has an orientation ranging between 110-120/70-75. Surface sampling of this showing and another stripped area approximately 50 m to the west is reported by McKay (2004) to have returned erratic gold assay values, with the most notable channel sample result being 4598 ppb Au over 0.2 m from the wide vein, and the most significant grab sample assay being 21,585 ppb Au from a pyrite-rich sample collected from a 3 cm wide vein. Gold mineralization is reported to have been largely confined to the quartz veins. Sampling reported by Janes et al. (1989) did not return any significant gold values.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Article - Sioux Lookout Resident Geologist's District - 1988
Publication Number: MP142.004 Page: 65-91 Date: 1997
Author: Janes D.A., Seim G.Wm., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
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