Ontario Geological Survey
Permanent Link to this Record:
MDI000000001641
| Record Name(s) | Thunder - 2007 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2013-Dec-11 |
| Date Last Modified | 2022-Jul-22 |
| Created By | |
| Revised By |
Primary Commodities: Platinum Metals, Copper, Nickel
Township or Area: Gorham
Latitude: 48° 32' 10.81" Longitude: -89° 17' 50.72"
UTM Zone: 16 Easting: 330412 Northing: 5378463 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A11SW
Point Location Description: Surface exploration trench
Location Method: Field Visit with GPS
Access Description: The Thunder occurrence is located near the intersection of Hazelwood Drive and Peterson Road. Access to the exploration trench is obtained via a trail on the north side of Peterson Road approximately 500 m west of Hazelwood Drive.
1950: Magnetometer survey and trenching by Thunderhead Gold Mines Limited. 2005: 3 diamond drill holes advanced by Kennecott Exploration Canada Inc. 2007: 4 diamond drill holes for 1904 m advanced by Geoinformatics Exploration Canada Ltd.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| AFRO 2.34638 | 20000002091 | 20000002091 |
| 63.231 | 52A11SW0016 | 52A11SW0016 |
Province: Southern
Supergroup: Keweenawan Supergroup
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Ultramafic-Unsubdivided | 1 |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pentlandite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore |
Dec 11, 2013 (Mark Puumala) - Three of four diamond drill holes advanced by Geoinformatics in 2007 to target Cu-Ni-PGE mineralization encountered intersections grading over 500 ppb Pt + Pd (AFRO 2.34638).
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Copper | Unknown | 3761 | ppm | |||
| Gold | Unknown | 57 | ppb | |||
| Lead | Unknown | BDL | ||||
| Nickel | Unknown | 719 | ppm | |||
| Palladium | Unknown | 344 | ppb | |||
| Platinum | Unknown | 461.3 | ppb | |||
| Zinc | Unknown | 117 | ppm |
| Rank | Classification |
|---|---|
| 1 | Mafic-Ultramafic Intrusion |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
Date: Oct 19, 2012
Geologist: Mark Puumala
Notes: Sample collected from surface trench in fine-grained ultramafic intrusive rock of the Thunder Intrusion near the northern contact with mafic metavolcanic rocks. The sample was mineralized with disseminations, blebs and seams of sulphide minerals (3-5%).
Part - Geology of Gorham Township and vicinity
Publication Number: ARV48-03 Date: 1998
Author: Macdonald R.D.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Gorham Township and vicinity, District of Thunder Bay, Ontario
Publication Number: ARM48C Scale: 1:63,360 Date: 1997
Author: Macdonald R.D.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Geology and Mineralization of the Thunder Intrusion, Thunder Bay, Ontario, Field Trip 10 in Field Guide to the Copper-Nickel-Platinum Group Element Deposits of the Lake Superior Region.
Publication Number: Date: 2013
Author: Trevisan, B., Hollings, P. and Ames, D.
Publisher Name: Precambrian Research Center, UMD
Location: Thunder Bay RRGO
Compend - Summary of Field Work and Other Activities, 2013
Publication Number: OFR6290 Date: 2013
Author: Ontario Geological Survey
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office