Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E05SW00021

Record: MDI42E05SW00021

General

Mineral Record Identification
Record Name(s) Point - 1980
Related Record Type Simple
Related Record(s)
Record Status Prospect
Date Created 1980-Jan-31
Date Last Modified 2022-Mar-04
Created By
Revised By

Commodities

Primary Commodities: Lithium



Location

Township or Area: Barbara Lake Area

Latitude: 49° 18' 50.66"    Longitude: -87° 54' 44.28"

UTM Zone: 16    Easting: 433693.06   Northing: 5462770.92    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42E05SW

Point Location Description: General

Location Method: Conversion from MDI

Access Description: The property is approx. 50 km NE of Nipigon. Access is along Highway 11, turn onto Gorge Creek Road,



Exploration History

1955: staked by Ontario Lithium Company Ltd., who conducted trenching and sampling. 1957: Ontario Lithium Co. Ltd. drilled 8 DDH totalling 546.6 m. 2011: Canadian Copper Core Inc. flew aeromag and VLF-EM geophysical surveys.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
2.50968 20000007174 20000007174
10 42E05SW0013 42E05SW0013

Geology

Province: Superior

Subprovince: Quetico

Geological Age: Archean  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Schist-Unsubdivided 1 Quartz-Mica Adjacent
Pegmatite 2 Host
Granite 3 Adjacent
Diabase 4 Diabase Sills And Dykes

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1SpodumeneEconomicOre
1QuartzEconomicGangue
2FeldsparEconomicGangue
3MuscoviteEconomicGangue
4ApatiteEconomicGangue

Mineralization Comments

Jun 29, 2017 (Therese Pettigrew) - The Point pegmatite is exposed in an outcrop, measuring 25 feet by 35 feet, along the shore at the southwest end of Georgia Lake. It is made up of medium- to coarse-grained crystals of potash feldspar and spodumene in a matrix of feldspar, quartz, subordinate muscovite, and accessory apatite. The spodumene content is 5-10 percent, and between 28 August and 3 October 1955, the deposit was tested at intervals of 100-200 feet by eight diamond-drillholes aggregating 1,793.0 feet. From the outcrop, the pegmatite was traced irregularly westward for about 600 feet. Throughout this length it was found to dip 60-70 degrees N and to range from 25 to 60 feet in thickness. The average lithia content is low. The best material was located in diamond-drillhole No. 201, bored S 45 degrees E at 30 degrees to test the dike about 200 feet west of the outcrop. This hole cut 23.7 feet of pegmatite, of which the upper 15 feet was found on analysis to average 0.96 percent Li2O. A flat sheet of diabase at least 100 feet thick was located in three diamond-drillholes at vertical depths of 100-115 feet. Near this sheet, in diamond-drillholes Nos. 202 and 204, the spodumene of the pegmatite was found to be highly altered. The spodumene content of the pegmatite cut in hole No. 202, for example, was visually estimated to be 10-15 percent, whereas the lithia content was found on analysis to be only 0.01-0.04 percent (Pye, 1965).



Mineral Record Details

Classification
RankClassification            
1 Pegmatite
Characteristics
Rank Characteristic            
1 Intrusive

References

Map - Georgia Lake area, Thunder Bay District

Publication Number: M2056 Scale: 1:63,360    Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:


MonoMap - Geology and lithium deposits of Georgia Lake area, District of Thunder Bay

Publication Number: R031 Scale:     Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:


Publication - Geology of Canadian Lithium Deposits; Geological Survey of Canada, Economic Geology Report 21

Publication Number: Econ Geol 21 Scale:     Date: 1965

Author: Mulligan, R.

Publisher Name: Geological Survey o

Location: https://doi.org/10.4095/102454


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Ministry Contact Information

For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office