Ontario Geological Survey
Permanent Link to this Record:
MDI52J06SW00002
| Record Name(s) | Lundmark Granite - 1987, Marchington River - 1986, Yett Lake - 1986 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1987-May-13 |
| Date Last Modified | 2022-Apr-29 |
| Created By | |
| Revised By |
Primary Commodities: Granite
Township or Area: Kimmewin Lake Area
Latitude: 50° 18' 56.97" Longitude: -91° 19' 36.98"
UTM Zone: 15 Easting: 619113 Northing: 5575085 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52J06SW
Point Location Description: Map in assessment report
Location Method: Based on Assessment
1988: H. Lundmark sent several blocks to Nelson Granite for geological and polishing testing. 1989: stripping and trenching.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.13136 | 52J06SW0001 | 52J06SW0001 |
| 2.12008 | 52J06SW0002 | 52J06SW0002 |
| 2.10600 | 52J06SW0003 | 52J06SW0003 |
Province: Superior
Subprovince: English River
Terrane: English River Basins
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 | Blue Quartz-Bearing Granodiorite | Is |
|---|
Apr 29, 2020 (Therese Pettigrew) - The rock is pink to pinkish grey, biotite granite with blue quartz. The granite is exposed in a few low outcrops; most of the area is covered by extensive sandy overburden deposits. Mafic inclusions up to 10 cm long are common. The biotite content tends to form small clots. A weak foliation trending 040-060 degrees/80 degrees S is the result of biotite alignment. Jointing is extensive, usually spaced about 1 m, al though some joint sets are very closely spaced. The predominant directions are northeast and east-southeast. Minor pyrite is present in some of the joints. The rock polishes well. Modal analyses indicate its composition is granodiorite to tonalite (Storey, 1986).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Quartz | Economic | Ore | ||||
| 2 | Hornblende | Economic | Ore | ||||
| 3 | Feldspar | Economic | Ore |
Apr 29, 2020 (Therese Pettigrew) - All rocks exposed on the claims are granite. They are medium to coarse-grained and consist of 15-35% bluish quartz, 5-10% hornblende, with the remainder being feldspar. Joint patterns have not been mapped in detail due to the lack of exposure. Outcrops indicate blocks 4'x4'x8' are present in the eastern part of the claims although most blocks would be from 2'x3'x4' to 2'x4'x8' (Assessment report 52J06SW0001).
Mono - Building and ornamental stone inventory in the districts of Kenora and Rainy River
Publication Number: MDC027 Page: 35-36 Date: 1986
Author: Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
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