Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31C16NW00002

Record: MDI31C16NW00002

General

Commodities

Primary Commodities: Iron

Location

Township or Area: Dalhousie

Latitude: 44° 58' 22.95"    Longitude: -76° 25' 39.75"

UTM Zone: 18    Easting: 387422   Northing: 4980947    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31C16NW

Point Location Description: Shaft.

Location Method: AMIS Site Visit

Access Description: The site is located northwest of the town of Perth. Drive north across the Mississippi River at Playfairville. 0.4km to north turn left at Iron Road taking left fork toward Plenty Canada, after a further 0.4km drive west for 1.7km ;parking just beyond large overgrown trench near RR#'s 505, 509 and 523.

Exploration History

1866-71 :Mine in production. 1918 : Canadian Union Iron Mines Corp. - Mine in production. Mining was from open-cuts, pits and 5 shafts with underground drifts. Surface workings cover 1,600 x 20 ft. The steeply-inclined shaft (to the N) goes to 94 ft with the lower 60 ft in hematite. 2005: Surface rights sold for residential use (OFR6186).

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Terrane: Sharbot Lake

Geological Age: Mesoproterozoic  

Geology Comments

Dec 07, 2005 (C Papertzian) - High grade red, massive hematite is associated with pyrite and abundant tremolite in dolomitic marble . A main and 2 smaller, NE-trending lenses of hematite extend over 1,600 ft and up to 9 ft wide. 57.6 % Fe, 0.02 % P. See GSC Bull 45 (1958) and GSC AR Vol 12 (1899) for map and detailed description.

Lithology

Lithology Comments

Sep 15, 2015 (A Wilson) - The main workings appear to have been a long, narrow open-cut, a smaller parallel cut, and several pits and shafts with underground drifts. The workings extend over a length of 1,600 feet, and a width of about 20 feet at surface; at the northern extremity, on a knoll of crystalline limestone, is an open steeply inclined shaft. On a plan of the mine dated at Perth, 18th July, 1873 this shaft is shown to be 94 feet deep, of which the lower 60 feet are indicated to be in ore. The country rock of the area is dolomitic crystalline limestone, the beds of which strike northeasterly and dip steeply southeasterly. It carries some tremolite and talc and is stained and replaced in part by hematite near the shaft and pits. To the east of these workings a few beds of brecciated quartzite are intercalated with the crystalline limestone. To the southeast somerusty gneiss and a band of trap are exposed. In the workings that follow the regional trend of the rocks, some shearing and light brecciation of the crystalline limestone are marked by zones of soft, chloritic, and micaceous schist, and impregnations of red hematite.

Mineralization

Mineralization Comments

Sep 15, 2015 (A Wilson) - At the north end of the main cut the hematite body rakes northerly under the crystalline limestone, and hematite was intersected in the shaft 40 feet to the north. A 2-foot-wide fragment of pyrite in quartz from beside thesite of the southernmost shaft displays a net or box-work structure. In addition to hematite this zone contains some pinkish carbonates and a coarse white carbonate that is surficially stained red and replaced in part by hematite. Thin sections of rocks in the hematite-bearing zone show hematite, and a variety of minerals including carbonates, tremolite, biotite, quartz, epidote, chlorite and serpentine. In a few places small grains of hematite are filmed with carbonates succeeded by hematite. Elsewhere a few small grains of pyrite are fractured and rimmed with hematite, and in other places by limonite, and limonite with hematite. A section from a pyrite-quartz boulder shows brecciated crystalline pyrite cemented and veined by quartzand minor amounts of carbonates. Hematite was noted as a light stain in one part of the section of the quartz-carbonate matrix only around small remnants of pyrite. A polished surface of porous, hard, blue-red hematite shows a box-work, cellular structure with hematite replacing gangue enclosed in this box-work. High grade, red, massive hematite is associated with pyrite and abundant tremolite in dolomitic marble. The mineralization returned assays of 57.6% Fe and 0.02% P.

Mineral Record Details

Mineral Zones - Size and Shape

References

Mono - Report of Activities 2005, Resident Geologist Program, Southern Ontario Regional Resident Geologist Report: Southeastern and Southwestern Ontario Districts, Mines and Minerals Information Centre, and Petroleum Resources Centre

Publication Number: OFR6186 Page: 20  Date: 2006

Author: Sangster P.J., Laidlaw D.A., Papertzian V.C., Steele K.G., Lee C.R., Barua M., Carter T.R.

Publisher Name: Ontario Geological Survey

Location:

Publication - Hematite Deposits; In: Report on the iron ore deposits along the Kingston and Pembroke Railway in eastern Ontario; Geological Survey of Canada, Annual Report vol. 12, (1899), pt. I

Publication Number: GSC AR 12-I Page: 70-74, 737  Date: 1901

Author:

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/287887

Publication - Iron deposits of eastern Ontario and adjoining Quebec; Geological Survey of Canada, Bulletin 45

Publication Number: GSC Bulletin 45 Page: 62-64  Date: 1958

Author: Rose, E.R.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/100563

Publication - Rocks and minerals for the collector: Hull-Maniwaki, Quebec; Ottawa-Peterborough, Ontario;Geological Survey of Canada, Paper 69-50

Publication Number: Paper 69-50 Page: 75-76  Date: 1970

Author: Sabina, A.P.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/103344

Mono - Iron deposits of Ontario

Publication Number: MDC011 Page: 248  Date: 1968

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Metallogeny of the Grenville Province, southeastern Ontario

Publication Number: OFR5515 Page: 166  Date: 1984

Author: Carter T.R.

Publisher Name: Ontario Geological Survey

Location:

Publication - Catalogue of Canadian minerals [1980]; Geological Survey of Canada, Paper 80-18

Publication Number: Paper 80-18 Page: 187  Date: 1983

Author: Traill, R.J.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/119519

Part - Geology of the Clarendon-Dalhousie area

Publication Number: ARV65-07.001 Page: 1-46  Date: 1998

Author: Smith B.L.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Clarendon-Dalhousie-Darling area, counties of Frontenac and Lanark

Publication Number: M1956-04 Scale: 1:63,360    Date: 1997

Author: Peach P.A., Smith B.L.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Plan and sections of Playfair or Dalhousie Mine, Lanark County, Ontario

Publication Number: Map 737 Date: 1901

Author: Geological Survey of Canada

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/214752

Map - Dalhousie Iron Mine

Publication Number: Map 91 Date: 1873

Author: Geological Survey of Canada

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/123583

Book - Mineral Occurrences of Lanark (unpublished)

Publication Number: Page: 81  Date: 1944

Author: Satterly, J.

Publisher Name: Ontario Department of Mines

Location: Tweed RGP

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