Ontario Geological Survey
Permanent Link to this Record:
MDI52L07SE00038
| Record Name(s) | Pegmatite 93-34 - 1994, Petalite Island - 1994 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 2004-Jun-07 |
| Date Last Modified | 2024-Feb-06 |
| Created By | |
| Revised By |
Primary Commodities: Lithium, Niobium
Township or Area: Paterson Lake Area
Latitude: 50° 15' 41.57" Longitude: -94° 31' 18.03"
UTM Zone: 15 Easting: 391541 Northing: 5568819 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52L07SE
Point Location Description: Island on Separation Lake west of bridge
Location Method: Data Compilation
Access Description: on an island in English River
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52L08SW0004 | 20000004902 | 20000004902 |
| 2.20238 | 52L08SW2008 | 52L08SW2008 |
Province: Superior
Subprovince: English River
Belt: Separation Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Complex-Type, Petalite-Subtype | Coarse-Grained | Host |
|---|
Jul 13, 2010 (C Ravnaas) - Eastern Petalite Zone, garnet-muscovite aplite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 2 | Ferrocolumbite | Economic | Ore | ||||
| 3 | Orthoclase | Economic | Ore | ||||
| 4 | Muscovite | Economic | Gangue | ||||
| 5 | Garnet | Economic | Gangue | ||||
| 6 | Albite | Economic | Gangue | ||||
| 7 | Vesuvianite | Alteration | Gangue |
Jul 14, 2017 (C Ravnaas) - The ore minerals are petalite, ferrocolumbite. The pegmatite contains abundant albite (aplite), petalite, muscovite; accessory spodumene, garnet, ferrocolumbite.
Jul 21, 2023 (Ethan Amyotte) - <1m wide pegmatite dike on southeastern shore with cm scale spodumene laths and Rb-bearing orthoclase with intergrowths of albite.
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Lithium | Unknown | 0 |
| Rank | Classification |
|---|---|
| 1 | Magmatic |
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
| 1 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | PRECAMBRIAN |
Date: Sep 12, 2022
Geologist: Ethan Amyotte
Notes: Visited SE shoreline in support of University of Manitoba thesis work. Collected 2 samples for XRD for potential spodumene and petalite mineralization. Samples confirmed to be spodumene and Rb-bearing Orthoclase.
Journal - Columbite-Tantalite Mineral Chemistry from Rare-Element Granitic Pegmatites: Separation Lakes Area, NW Ontario, Canada; Mineralogy and Petrology v. 70, issue 3-4, p. 165-198
Publication Number: Min&Pet V70 Date: 2000
Author: Tindle, A.G., and Breaks, F.W.
Publisher Name: Mineralogy and Petrology
Location: https://www.researchgate.net/publication/42797106_Columbite-tantalite_mineral_chemistry_from_rare-element_granitic_pegmatites_Separation_Lake_area_NW_Ontario_Canada
Map - Precambrian Geology, Separation Lake Greenstone Belt-West Sheet
Publication Number: P2673 Scale: 1:20,000 Date: 2008
Author: Blackburn C.E., Young J.B., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Mono - Tantalum Mineralogy of Rare-Element Granitic Pegmatites from the Separation Lake Area, Northwestern Ontario
Publication Number: OFR6022 Date: 2000
Author: Tindle A.G., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Separation Lake Greenstone Belt, West Part
Publication Number: OFM0241 Scale: 1:20,000 Date: 1994
Author: Blackburn C.E., Young J.B., Searcy T.O., Donahue K.
Publisher Name: Ontario Geological Survey
Location:
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