Ontario Geological Survey
Permanent Link to this Record:
MDI31F03NW00003
| Record Name(s) | Len Lake - 1981, Trout Lake - 9999 |
|---|---|
| Related Record Type | Simple |
| Record Status | Discretionary Occurrence |
| Date Created | 1981-Jan-13 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | C Papertzian |
Primary Commodities: Tremolite
Secondary Commodities: Talc
Township or Area: Ashby
Latitude: 45° 8' 42.22" Longitude: -77° 26' 52.07"
UTM Zone: 18 Easting: 307563.829 Northing: 5001979.918 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F03NW
Point Location Description: Rock unit symbol '3b' near small promontory at W end of Len Lake [Trout Lake ].
Location Method: Conversion from MDI
Access Description: Drive east from Bancroft on Highway 500 to a road marked 'Salvation Army Camp' .This road is followed to the Ministry access point on Len Lake [Trout Lake ] .Travel by boat to the extreme west end of the lake and the small promontory.
A small pit has been blasted into a banded and silicated marble.It is about 8 feet across and 4 to 6 feet deep. An older and shallower pit, about 20 feet long and 2 -4 feet deep,is also present on this headland.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - A silicated marble skarn shows development of tremolite and talc, although the talc is apparently not as visible as suggested in OGS 1964 GR26. Veins of asbestiform tremolite were reported to cut across the general banding, varying in width from 1/4 to 6 inches.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Asbestos | Economic | Ore | ||||
| 10 | Talc | Economic | Ore | ||||
| 15 | Tremolite | Economic | Ore |
Book - NMI 31F03 ASB 1
Publication Number: N/A Scale: Date: 1996
Author:
Publisher Name:
Mono - Talc in southeastern Ontario
Publication Number: OFR5714 Scale: Date: 1989
Author: LeBaron P.S., van Haaften S.
Publisher Name: Ontario Geological Survey
MonoMap - Geology of Ashby and Denbigh townships
Publication Number: R026 Scale: Date: 1997
Author: Evans A.M.
Publisher Name: Ontario Dept. of Mines
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