Ontario Geological Survey
Permanent Link to this Record:
MDI31F04SW00244
| Record Name(s) | Jeffrey - 1983, Jeffry - 2000, Jefrey Deposit - 2000 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-May-26 |
| Date Last Modified | 2022-May-13 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Silver, Arsenic
Township or Area: Faraday
Latitude: 45° 0' 16.35" Longitude: -77° 53' 33.88"
UTM Zone: 18 Easting: 272025.375 Northing: 4987526.252 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F04SW
Point Location Description: Shaft ' As ' just SW of Carfrae Lake.
Location Method: Conversion from MDI
Access Description: Accessible by cottage road to Carfrae (Jeffrey) Lake from the Bay Lake road which runs SW from Hwy 62 2.4 km S of Bancroft. Rock debris can be seen beside the cottage road, and on travelling S there is a space where a truck can pull off the road - essentially right beside the shafts. The shaft closest to the road is being filled with garbage by the cottagers. Meyn (1983) says this is the location of only the shafts and does not match Thomson's (1943) description at all. Bosiak (1963) states that the showing is 3/4 ml N of the road and 130 ft SE of Carfrae Lake. There is some confusion.
Circa 1901 : the Jeffry prospect - a 10 ft shaft was sunk, later reported to be 35 ft deep. 2 pits are reportedly 250 and 360 ft E of the shaft. 2 shafts and a pit can be seen beside the cottage road - there is some confusion as to the exact location of the workings. Assays of the vein gave 0.06 oz/t Au, 3.01 oz/t Ag and 27.54 % As.
Province: Grenville
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - Arsenopyrite is unevenly disseminated in a volcanic tuff which forms a narrow unit (1m) within an extensive marble sequence. It is exposed over about 21 m and is locally concentrated-massive. Small veins are commonly associated with biotite. Realgar, orpiment and scorodite were reported at the showing (1910).
| Rock Type | Rank | Composition | Texture | Relationship | Felsic Tuff | 1 | Tuff | Contains |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Biotite | Economic | Ore | ||||
| 3 | Gold | Economic | Ore | ||||
| 4 | Orpiment | Economic | Ore | ||||
| 5 | Realgar | Economic | Ore | ||||
| 6 | Scorodite | Economic | Ore |
Apr 20, 2022 (Sheree Hinz) - A sample of mineralized tuff collected by Wells (1902) is reported to have contained 0.06 oz/ton Au, 3.01 oz/ton Ag, and 27.54% As. A composite sample collected by Thomson (1943) contained only trace amounts of gold.
Publication - Geology of the Haliburton and Bancroft areas, Province of Ontario; Geological Survey of Canada, Memoir no. 6
Publication Number: GSC Mem 6 Page: 205-6, 211-12, 366-7 Date: 1910
Author: Adams, F D; Barlow, A E
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100481
Publication - A list of Canadian mineral occurrences; Geological Survey of Canada, Memoir no. 74
Publication Number: GSC Mem 74 Page: 193, 200 Date: 1915
Author: Johnston, R A A
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/101571
Part - Mineral occurrences in the north Hastings area
Publication Number: ARV52-03 Page: 16 Date: 1998
Author: Thomson J.E.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 31 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, base and precious metals, iron and molybdenum deposits of Pembroke-Renfrew area, southern Ontario
Publication Number: P2211 Scale: 1:126,720 Date: 1979
Author: Carter T.R., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of base metal, precious metal, iron, and molybdenum deposits in the Pembroke-Renfrew area
Publication Number: MDC020 Page: 27-28 Date: 1980
Author: Carter T.R., Colvine A.C., Meyn H.D.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist file 1983
Publication Number: Date: 1983
Author:
Publisher Name:
Location:
Part - Mines of northwest Ontario, parts 1 and 2
Publication Number: ARV10.004 Page: 102 Date: 1998
Author: Bow J.A., Carter W.E.H.
Publisher Name: Ontario Bureau of Mines
Location:
Part - The pre-Cambrian geology of southeastern Ontario
Publication Number: ARV22-02 Page: 105 Date: 1998
Author: Miller W.G., Knight C.W.
Publisher Name: Ontario Bureau of Mines
Location:
Publication - Arsenic-bearing deposits in Canada; Geological Survey of Canada, Economic Geology Series 4
Publication Number: Econ Geol 4 Page: 100 Date: 1927
Author: Hurst, M.E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102439
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