Ontario Geological Survey
Permanent Link to this Record:
MDI31C05NW00026
| Record Name(s) | Blairton - 1991, Big Ore-Bed - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1991-Jul-17 |
| Date Last Modified | 2022-May-02 |
| Created By | |
| Revised By |
Primary Commodities: Magnetite
Township or Area: Belmont
Latitude: 44° 28' 7.22" Longitude: -77° 45' 36.1"
UTM Zone: 18 Easting: 280464.93 Northing: 4927635.06 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C05NW
Point Location Description: The southerly ' Fe ' symbol just S of Crowe Lake.
Location Method: Conversion from MDI
Access Description: The mine is located on the S shore of Crowe Lake, about 7 Km N of Hwy 7. A short road servicing the Blairton Mobile Home Campground, 2 Km N of Hwy 7 , gives access to the mine.
1820: The mine was opened and operated intermittently until 1875. 270,000 tonnes of ore was shipped from 3 pits. 1908-1910: Canadian Iron Mines Limited carried out 13 diamond drill holes, with an aggregate footage of 1097.3 m. 1951: Frobisher Limited carried out diamond drilling and a magnetometer survey. 1951: Trent River Iron Limited drilled 2 diamond drill holes on Crowe Lake. 1957: W. S. Moore Company did some diamond drilling. 1960: W.S. Moore Company carried out 1 diamond drill hole totaling 172 feet.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 11 | 31C05NW0005 | 31C05NW0005 |
| 63.4881 | 31C05NW0001 | 31C05NW0001 |
Province: Grenville
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Gabbro | Host |
|---|---|---|---|---|
| Limestone | 2 | Near |
Oct 23, 2019 (Sheree Hinz) - Skarn deposit of magnetite at the contact of a gabbro-diorite intrusion and Paleozoic limestone. "An intrusive body of gabbro-diorite forms the east wall of the deposits, with crystalline limestone and chloritic schist on the west wall. A sinuous, northerly trending shear zone in skarn and metamorphic pyroxenite carries magnetite and dips steeply east. The magnetite zone and adjacent rocks are overlain by conglomerate, succeeded by ferruginous dolomite and limestone, all of Paleozoic age.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 2 | Actinolite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Epidote | Economic | Ore | ||||
| 5 | Garnet | Economic | Ore | ||||
| 6 | Hematite | Economic | Ore | ||||
| 7 | Martite | Economic | Ore | ||||
| 8 | Pyrite | Economic | Ore | ||||
| 9 | Pyrrhotite | Economic | Ore | ||||
| 10 | Tourmaline | Economic | Ore |
Oct 23, 2019 (Sheree Hinz) - There are two lenses of magnetite present. The main lens is approximately 210m long and 15 m in width. The host rock (gabbro-diorite) is fine- to medium-grained with disseminations of magnetite. A representative sample of ore material taken in 1911 gave the following results: 50.1% Fe, 9.8% SiO2, 1.64% MgO.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Lake | 1959 | Indicated Mineral Resource | 1630000 | OGS OFR 5431, pp68,69 1983 | Iron 51.8 Percent | |
| Derick | 1959 | Indicated Mineral Resource | 450000 | OGS, OFR 5431, pp68,69, 1983 | Iron 54.2 Percent |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1875 | 272100 |
Iron |
OGS 1968, MRC 11, p288 |
Publication - Magnetite occurrences along the Central Ontario Railway; Canada Mines Branch, Publication 184
Publication Number: CMB Pub 184 Page: 9-10 Date: 1913
Author: Lindeman, E
Publisher Name: Canada Mines Branch
Location: https://doi.org/10.4095/307472
Publication - Iron Deposits of Eastern Ontario and Adjoining Quebec; Geological Survey of Canada Bulletin 45
Publication Number: GSC Bull 45 Page: 22-25 Date: 1958
Author: Rose, E.R.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100563
Part - The pre-Cambrian geology of southeastern Ontario
Publication Number: ARV22-02 Page: 106-7 Date: 1998
Author: Miller W.G., Knight C.W.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mineral occurrences in the Haliburton area
Publication Number: ARV52-02 Page: 47-8 Date: 1998
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Preliminary report on ground investigation of aeromagnetic anomalies on the Campbellford and Bannockburn sheets
Publication Number: PR1951-06 Date: 1998
Author: Harding W.D.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 287-288 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral resources of south-central Ontario
Publication Number: OFR5431 Page: 68-71 Date: 1983
Author: Guillet G.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Metallogeny of the Grenville Province, southeastern Ontario
Publication Number: OFR5515 Page: 96 Date: 1984
Author: Carter T.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology of Belmont, Marmora, and southern Methuen townships, Peterborough and Hastings counties
Publication Number: OFR5537 Page: 186 Date: 1985
Author: Bartlett J.R., Moore J.M.
Publisher Name: Ontario Geological Survey
Location:
Mono - An inventory of the mineral resources in Peterborough County
Publication Number: OFR5635 Page: 127-128 Date: 1987
Author: Menard A.G.
Publisher Name: Ontario Geological Survey
Location:
Publication - A Catalogue of Canadian Minerals; Geological Survey of Canada, Paper 69-45
Publication Number: Paper 69-45 Page: 140-141 Date: 1972
Author: Traill, R J
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102924
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