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Ontario Geological Survey
Permanent Link to this Record:
MDI000000001140
| Record Name(s) | Black Sturgeon Halite - 2006 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2011-Mar-23 |
| Date Last Modified | 2021-Nov-24 |
| Created By | J SCOTT |
| Revised By | Therese Pettigrew |
Primary Commodities: Salt
Township or Area: Mikinak Lake Area
Latitude: 49° 19' 33.18" Longitude: -88° 53' 22.44"
UTM Zone: 16 Easting: 362700 Northing: 5465401 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52H07SW
Point Location Description: DDH BSW-06-01a location from AFRI 20000001750
Location Method: Data Compilation
Access Description: The property is accessible from Highway 11/17 via Highway 527 (Spruce River Road) and the Black Sturgeon Road.
2006: Rampart Ventures Ltd. drilled 5 DDH totalling 3723.43 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.33453 | 20000001750 | 20000001750 |
Province: Southern
Subprovince: Nipigon Basin
Formation Group: Sibley Group
Geological Age: Mesoproterozoic
Jan 22, 2018 (Therese Pettigrew) - The Mesoproterozoic sedimentary rocks of the Sibley Group were deposited in a subsiding, intracratonic basin centred to the south of Lake Nipigon. The Group consists of 5 formations, 3 of which (the Pass Lake, Rossport and Kama Hill) were previously defined, with the remaining 2 (Outan Island and Nipigon Bay) only recently described. The Pass Lake Formation consists of the conglomeratic Loon Lake Member and the commonly sheet-like sandstones of the Fork Bay Member, representing a braided fluvial to shallow lacustrine environment. The Rossport Formation is separated into the Channel Island, Middlebrun Bay and Fire Hill members. The Channel Island Member is a cyclic dolomite�red shale unit, which was deposited in a playa lake. The Middlebrun Bay Member is a stromatolitic unit representing strandline deposits laid down during regression of the lake. The Fire Hill Member consists of mud-cracked red shaly siltstone with mud-chip conglomerates and sand sheets. It probably signifies a change in tectonic style from broad subsidence to active half-graben formation (Rogala et al., 2005).
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 |
|---|---|---|---|---|
| Sandstone | 2 | |||
| Limestone | 3 | |||
| Diabase | 4 | Diabase Sill |
Jan 22, 2018 (Therese Pettigrew) - The drill hole penetrated an upper diabase sill, a short interval of Sibley sediments representing the middle part of the Rossport Formation, a lower diabase sill, then more Sibley sediments including the Lower Rossport Formation and the Pass Lake Formation, which rests on basement. The Rossport Formation consists of variable sandstone, siltstone and mudstone, mostly calcareous, and limestone and dolostone. The Pass Lake Formation consists mostly of red sandstone with, in some cases, interbedded halite. The presence of discrete beds of halite has not been previously reported from the Sibley basin, and it may represent the only known Precambrian salt deposit.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Halite | Economic | Ore |
Mar 23, 2011 (J SCOTT) - 14 meters of halite at the Sibley/Archean unconformity located at about 500 meters down a dd hole.
Jan 22, 2018 (Therese Pettigrew) - Interbedded halite and contact metamorphosed calcareous mudstone to fine-grained sandstone from 554.05-568.10 m depth in DDH BSW-06-01a. Contains metre-scale thickness units alternating between cm-scale interbedded halite and metamorphosed calcareous siltstones and zones dominated by green-red calcareous siltstone. Halite varies from green to reddish colour and is in places quite coarsely crystalline. Bedding typically close to perpendicular to core axis. Hole BSW-06-01A encountered two pockets of natural gas (methane) under high pressure in the Archean basement. The hole was abandoned after the second pocket of gas was encountered (AFRI 20000001750).
| Rank | Classification |
|---|---|
| 1 | Evaporite |
Mono - Stratigraphy and Sedimentology of the Mesoproterozoic Sibley Group and Related Igneous Intrusions, Northwestern Ontario: Lake Nipigon Region Geoscience Initiative
Publication Number: OFR6174 Scale: Date: 2005
Author: Rogala B., Fralick P.W., Metsaranta R.T.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office