Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SW00015
| Record Name(s) | Crescent Silver - 1980, Aconic Mining Corp - 1980, Shakt-Davis - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Nov-14 |
| Date Last Modified | 2023-Aug-23 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt
Secondary Commodities: Nickel, Gold
Township or Area: Coleman
Latitude: 47° 21' 45.89" Longitude: -79° 54' 42.91"
UTM Zone: 17 Easting: 582159.996 Northing: 5246049.995 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SW
Point Location Description: Shaft, NE bay of Kitt Lake.
Location Method: Field Visit with GPS
Exploration and development commenced about 1906 and was intermittent until the 1960s. At the Crescent, early surface exploration uncovered silver-cobalt mineralization in calcite veining. Four shallow prospecting shafts were sunk on the veins. An adit from near the shore of Kitt Lake was driven into the diabase ridge with the intent of intersecting the downward extent of the mineralization. A vertical winze was sunk from the adit level down 250 feet, where a second level was opened. A total of 1450 feet (442 m) of drifting and crosscutting was completed on the 2 levels (Bray 1953).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 27 | 31M05SW0005 | 31M05SW0005 |
Dec 22, 2011 (D Guidon) - The workings of both properties are located near the north contact of a near-vertical Nipissing diabase dike that cuts Cobalt Group sedimentary rocks. The group’s Lorrain Formation sedimentary rocks are composed of arkose. The diabase dike is about 100 m wide in the vicinity of the Edison and about 120 m wide at the Crescent. The dike dips at about 75 to 80 degrees to the north. The geology of the deposits is described in Born and Hitch (1990) and Born and Burbidge (1997). Pits on the Crescent were found at 582673E 5246126N, 582358E 5246026N and 582396E 5246056N. A sample of calcite in a diabase host contained abundant erythrite and possibly some very fine disseminated pyrite. Assay results for the sample were 2 ppm silver and 1 ppb gold. Calcite veins on the Crescent, roughly parallel to the northern diabase contact, host copper, cobalt, nickel arsenide mineralization. Veins are controlled by a fracture zone that strikes about 060 degrees. The Main Vein ranges from 1 to 7 m wide and the parallel Chimney Vein, ranges from 1 to 3 m wide. Mineralization includes smaltite, cobaltite, gersdorffite, erythrite, annabergite, pyrite, chalcopyrite and niccolite. A test of hand picked ore contained 7.92% cobalt, 7.72% nickel, 0.25 ounce per ton silver and 0.87 ounce per ton gold. Grab samples contained up to 2.72 ounce per ton gold (Bray 1953).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 2 | Pyrite | Economic | Gangue | ||||
| 3 | Chalcopyrite | Economic | Gangue |
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Aluminum | Unknown | 29022 | ppm | |||
| Barium | Unknown | 26 | ppm | |||
| Calcium | Unknown | 33850 | ppm | |||
| Chromium | Unknown | 10 | ppm | |||
| Cobalt | Unknown | 500 | ppm | ADL | ||
| Copper | Unknown | 394 | ppm | |||
| Gold | Unknown | 19.404 | ppb | |||
| Iron | Unknown | 33306 | ppm | |||
| Lead | Unknown | 46 | ppm | |||
| Lithium | Unknown | 35 | ppm | |||
| Magnesium | Unknown | 14726 | ppm | |||
| Manganese | Unknown | 1353 | ppm | |||
| Nickel | Unknown | 1378 | ppm | |||
| Palladium | Unknown | ppb | BDL | |||
| Platinum | Unknown | .1779 | ppb | |||
| Potassium | Unknown | 2693 | ppm | |||
| Scandium | Unknown | 15 | ppm | |||
| Silver | Unknown | 3 | ppm | |||
| Sodium | Unknown | 8540 | ppm | |||
| Strontium | Unknown | 22 | ppm | |||
| Titanium | Unknown | 3775 | ppm | |||
| Vanadium | Unknown | 188 | ppm | |||
| Yttrium | Unknown | 14 | ppm | |||
| Zinc | Unknown | 36 | ppm |
Date: Sep 16, 2010
Geologist: D Guidon
Notes: The property was visited September 16, 2010 with Gary Grabowski. Access was gained by helicopter to Kittson Lake. Samples Collected 10327 Ed Pit Coleman 17 583286 5246289 qcvwith a trace of py Photos Photo Number Description Easting Northing 731528 Crescent - large pit 582396 5246056 731529 Crescent - large pit - Gary Grabowski collecting a sample from the muck pile 582396 5246056 731530 Crescent - pit on way to adit 582358 5246025
Map - Geological series, Precambrian geology, Darling area, Lanark and Renfrew counties
Publication Number: P3113 Scale: 1:15,840 Date: 1988
Author: Easton R.M., de Kemp E.A.
Publisher Name: Ontario Geological Survey
Location:
Article - Geology of the Bay Lake area, District of Timiskaming
Publication Number: MP141.040 Page: 285-287 Date: 1997
Author: Born P., Hitch M.W.
Publisher Name: Ontario Geological Survey
Location:
Part - Anima-Nipissing Lake area
Publication Number: ARV35-03.003 Page: 101-103 Date: 1998
Author: Todd E.W.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 234 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Precambrian geology, Bay Lake area
Publication Number: R276 Date: 1990
Author: Born P., Hitch M.W.
Publisher Name: Ontario Geological Survey
Location:
Article - Cobalt Resident Geologist's District - 1990
Publication Number: MP152.013 Page: 267 Date: 1997
Author: Basa E.M.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Precambrian Geology, Brigstocke and Kittson Townships
Publication Number: R275 Date: 1997
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
Book - Report on Aconic Mining Corporation, Coleman Township, Ontario
Publication Number: CO0556 Date: 1953
Author: Bray, A.C.
Publisher Name: Unpublished report in assessment file CO-0556, 13p.
Location: Kirkland Lake RGP office
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