Ontario Geological Survey
Permanent Link to this Record:
MDI31F12SW00007
| Record Name(s) | Bonfield - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1985-Dec-03 |
| Date Last Modified | 2022-Apr-20 |
| Created By | |
| Revised By |
Primary Commodities: Mica
Secondary Commodities: Feldspar (Nonmetals)
Township or Area: Dickens
Latitude: 45° 37' 22.63" Longitude: -77° 51' 37.76"
UTM Zone: 18 Easting: 277008.049 Northing: 5056136.748 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F12SW
Point Location Description: Diamond symbol ' p 28 ' on peninsula, lot 9, con 10.
Location Method: Conversion from MDI
Access Description: The deposit is on the E side of the ridge running down the centre of the large, S-trending peninsula in Aylen Lake. It is 300m from the E shore and 1,200 m from the S end of the point. Access is from the lake; there are no trails.
1942-3 : staked by W.B.Cameron and developed by the Bonfield Mica Syndicate who mined 2,000 lbs of rough mica. The main working was an open-cut 75 ft long with a face 12-15 ft high and a 20 ft wide bench. 2 small pits were also sunk 20 ft N of the open-cut. Slumping has since obscured much of the pegmatite. The deposit was worked for mica only and feldspar remains in the dump.
Province: Grenville
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - Pegmatitic dykes and sills are hosted by anorthositic gabbro. The sill on this property is 4.5 m thick in the centre, pinching out at either end of the cut. It is a microcline-albite-quartz -biotite-muscovite pegmatite and may have had a quartz core. The microcline occurred in crystals and masses of 0.3 - 0.6 m (microcline) and 10 cm (albite).
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Contains |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Mica | Economic | Ore |
Apr 20, 2022 (Sheree Hinz) - Bonfield Mica Syndicate produced 2000 lbs of rough mica in 1943.
MonoMap - Industrial minerals of the Pembroke-Renfrew area, part 2
Publication Number: MDC022 Page: 122-3, 154-5 Date: 1981
Author: Storey C.C., Vos M.A.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of Ontario in 1943
Publication Number: ARV53-01.003 Page: 180 Date: 1997
Author: Tower W.O., Smith R.L., Bawden W.E., Cooper D.F., Taylor J.B., Little E.S., Weir E.B., Douglass D.P.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Page: 64 Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
Mono - Pegmatite mineral resources of Ontario
Publication Number: IMR021 Page: 30 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Mineral occurrences in the Renfrew area
Publication Number: ARV53-03 Page: 123 Date: 1998
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
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