Ontario Geological Survey
Permanent Link to this Record:
MDI52L07SE00033
| Record Name(s) | Pegmatite 93-263 - 1993 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2004-Jun-07 |
| Date Last Modified | 2023-May-26 |
| Created By | |
| Revised By |
Primary Commodities: Tantalum, Beryllium
Secondary Commodities: Niobium, Lithium, Cesium
Township or Area: Paterson Lake Area
Latitude: 50° 15' 38.88" Longitude: -94° 31' 43.26"
UTM Zone: 15 Easting: 391040 Northing: 5568746 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52L07SE
Point Location Description: Island on Separation Lake west of bridge
Location Method: Field Visit with GPS
Access Description: On an island in English River, near SE end of Separation Rapids Pluton
| 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 | Beryl Type | Host |
|---|
Jul 13, 2010 (C Ravnaas) - Garnet-muscovite-quartz-albite aplite dike near southeastern end of Separation Rapids pluton.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Manganotantalite | Economic | Ore | ||||
| 2 | Manganocolumbite | Economic | Ore | ||||
| 1 | Albite | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue | ||||
| 3 | Muscovite | Economic | Gangue | ||||
| 4 | Garnet | Economic | Gangue |
Jul 14, 2017 (C Ravnaas) - The ore minerals area manganotantalite, manganocolumbite. The pegmatite contains abundant albite, quartz, muscovite; acessory garnet, manganotantalite, manganocolumbite. A 113 cm long channel cut of aplite dike contains 55 ppm Be, 10 ppm Cs, 83 ppm Li, 660 ppm Rb, 60 ppm Ta, 41 ppm Nb.
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Beryllium | Unknown | 55 | ppm | |||
| Cesium | Unknown | 10 | ppm | |||
| Lithium | Unknown | 83 | ppm | |||
| Niobium | Unknown | 41 | ppm | |||
| Tantalum | Unknown | 660 | ppm |
| Rank | Classification |
|---|---|
| 1 | Magmatic |
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
| 1 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | PRECAMBRIAN |
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:
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 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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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office