Ontario Geological Survey
Permanent Link to this Record:
MDI42A11NE00048
| Record Name(s) | Alamo Petroleum - DDH2 - 1975, Allerston - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1999-May-21 |
| Date Last Modified | 2023-Jan-12 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Nickel
Township or Area: Gowan
Latitude: 48° 40' 45.39" Longitude: -81° 6' 8.87"
UTM Zone: 17 Easting: 492457.49 Northing: 5391808.443 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A11NE
Point Location Description: Point plotted on OBM topo map from information in assessment files
Location Method: Based on Assessment
Access Description: Bush trails.
1975: Alamo Petroleum carried out diamond drilling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-1619, 14 | 42A11NE0520 | 42A11NE0520 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Kidd-Munro
Geological Age: Neoarchean
Metamorphism Type: Contact
Metamorphism Grade: Amphibolite
Dec 07, 2005 (G Seim) - Alamo Hole 2 penetrated through 172.5 ft. of overburden (121.6 ft. vertical) before collaring in mafic metavolcanic rock intercalated with rhyolite. With depth the mafic rock became serpentininzed with abundant actinolite-tremolite. Carbonate veins up to 2 ft. wide were numerous and often occurred at the contact of mafic and flsic rocks. Quartz veins occurred also at the contacts and cutting the felsic rocks. The lower part of the hole intersected an ultramafic rock complosed of serpentine-talc. The top 31 ft. of this ultramafic unit contained up to 60% pyrite in bands up to 6 inches wide. Chalcopyrite made up to 1-2% of the sulphides.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Amphibolite | Near |
|---|---|---|---|---|
| Ultramafic-Unsubdivided | 2 | Host | ||
| Porphyry-unsubdivided | 3 | Rhyolite Porphyry | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Chalcopyrite | Economic | Gangue |
Dec 07, 2005 (G Seim) - Exploration diamond drilling by Alamo Petroleum in 1975 resulted in DDH2 intersecting an intercalated sequence of mafic amphibilolitic rocks, rhyolite, and ultramafic rocks. One band of ultramafic rock in direct contact with a rhyolite porphyry contained 8-10% combined sulphides (pyrite-chalcopyrite-(pyrrhotite)). This sulphide-bearing section returned a weighted average grade of 0.313% Cu, 0.06% Ni / 36 feet.
Map - Timmins data series, Gowan Township, District of Cochrane
Publication Number: P0729 Scale: 1:15,840 Date: 1997
Author: Hunt D.S., Richard J.A., Carey E.R.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Hoyle and Gowan townships, District of Cochrane
Publication Number: OFR5833 Date: 1992
Author: Berger B.R.
Publisher Name: Ontario Geological Survey
Location:
Map - Geology of Hoyle and Gowan townships
Publication Number: OFM0175 Scale: 1:20,000 Date: 1991
Author: Berger B.R.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office