Ontario Geological Survey
Permanent Link to this Record:
MDI42A07NW00013
| Record Name(s) | Cross Lake Discovery - 1997, Cross Lake Zone - 1998 |
|---|---|
| Related Record Type | Simple |
| Record Status | Prospect |
| Date Created | 2002-May-24 |
| Date Last Modified | 2022-Jan-05 |
| Created By | A Wilson |
| Revised By | A Wilson |
Primary Commodities: Silver, Zinc, Copper
Township or Area: Sheraton
Latitude: 48° 25' 11.81" Longitude: -80° 46' 2.24"
UTM Zone: 17 Easting: 517217.83 Northing: 5363003.55 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A07NW
Point Location Description: Cluster of drill collars SW of Sheraton Lake
Location Method: Data Compilation
Access Description: The property is accessed by driving 35 km east from Timmins on highway 101, then 16 km south along the Gibson Lake gravel road, and then SE for 1.7 km on a bush road. From this point access to the drill sites is only a few hundre metres via bulldozer trails.
1991-2000: Cross Lake Minerals Ltd. - ground geophysics, 79 ddh (30,235 m), geochemistry, petrography.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-4228/ 2.19447 | 42A10SE2005 | 42A10SE2005 |
| T-4209/2.19379 | 42A07NE2012 | 42A07NE2012 |
| T-4208/ 2.19365 | 42A07NE2010 | 42A07NE2010 |
| T-4159/2.19367 | 42A07NE2007 | 42A07NE2007 |
| T-4179 / 2.19364 | 42A07NW2011 | 42A07NW2011 |
| T-4195/ 2.19468 | 42A07NE2011 | 42A07NE2011 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean Geochronological Age: 2703 MA Geochron. Age Ref.: P3398
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate Tuff | 1 | Felsic To Intermediate | Tuff, Agglomerate | Host |
|---|---|---|---|---|
| Breccia-unsubdivided | 2 | Rhyolite | Near | |
| Quartz-Feldspar Porphyry | 3 | Quartz-Feldspar | Near | |
| Feldspar Porphyry | 4 | Feldspar | Near | |
| Intermediate Crystal Tuff | 5 | Chloritic | Crystal Tuff | Hanging Wall |
Dec 07, 2005 (A Wilson) - The predominant lithologies are felsic to intermediate volcaniclastic rocks consisting of ash tuff, lapilli tuff, crystal tuff and agglomerate with lesser volumes of massive or brecciated rhyolite and mafic tuffs. Thin, silica-rich finely laminated white units, possibly of exhalative origin, occur in proximity to the base metal-mineralized zones. Intrusive rock types consist of quartz feldspar, feldspar porphyry and diabase. The felsic volcanic sequence dips steeply southeast and faces southeast. The lowest unit intersected in the zone is the Tiger Stripe, which is a sheared porphyry or crystal tuff which displays regular, thin banding caused by layers of sericite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Sphalerite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Galena | Economic | Ore |
Dec 07, 2005 (A Wilson) - The deposit consists of a steeply dipping, eastern zinc zone with an overlying copper zone located down plunge to the west. Zinc grades are mainly in the range of 1% to 6%, but local high grade pods contain 18% Zn over a true width of 3 m, with silver values ranging up to 911 g/t Ag. Copper grades of 1% to 3% have been encountered over estimated tru widths of up to 12 m including higher grade sections. The Cross Lake zone has generally higher concentrations of zinc relative to copper.
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | 2000 | 45 | 400 | 65 | 65 | 20 |
Book - Cross Lake 2000 Annual Report
Publication Number: Annual Report Scale: Date: 2000
Author:
Publisher Name:
Map - Precambrian Geology, Sheraton Township
Publication Number: P3387 Scale: 1:20,000 Date: 1999
Author: Vaillancourt C.
Publisher Name: Ontario Geological Survey
Book - Cross Lake Clippings File
Publication Number: clippings Scale: Date: 1999
Author:
Publisher Name:
Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt
Publication Number: P3398 Scale: 1:100,000 Date: 1999
Author: Ayer J.A., Berger B.R., Trowell N.F.
Publisher Name: Ontario Geological Survey
Mono - Precambrian Geology of the Watabeag Lake Area
Publication Number: OFR6042 Scale: Date: 2001
Author: Vaillancourt C.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office