Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31D16NW00256

Record: MDI31D16NW00256

General

Commodities

Primary Commodities: Magnetite

Location

Township or Area: Glamorgan, Glamorgan

Latitude: 44° 58' 39.35"    Longitude: -78° 23' 45.24"

UTM Zone: 17    Easting: 705323   Northing: 4983761    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31D16NW

Point Location Description: 1 km east of Stormy Lake.

Location Method: Data Compilation

Access Description: On a hill in lot 31.

Exploration History

Circa 1890 : magnetic attraction reported but no work on property

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Terrane: Bancroft

Geological Age: Mesoproterozoic  

Lithology

Lithology Comments

Jan 23, 2017 (A Wilson) - The deposit was worked by several pits extending over a distance of 500 m. Two companies were involved in mining operations: the Tonkin-Dupont Graphite Company in the eastern section of the orebody from 1912 to 1914, and National Graphite Company in the continuation on the western section from 1915 to 1919. Both companies operated mills for the treatment of the ore; the Tonkin-Dupont mill was at Wilberforce, that of the National Graphite Company at Mumford Station. Operations terminated due to a decrease in demand for graphite following World War 1. There are nine pits: two water-filled pits are on the east side of the road southeast of the farmhouse and the others extend westward over about 245 m. The largest pits are 61 m by 4-12 m and 23 m deep, and 18 m by 9 m and 46 m deep. The property belongs to John Freymond. Collecting is not permitted on this property; it is described for historical interest only.

Mineralization

Mineralization Comments

Jan 23, 2017 (A Wilson) - Graphite flakes measuring up to 5 mm in size occur in crystalline limestone and in silicate limestone associated with pyroxenite, gneiss, pegmatite and amphibolite. Crystalline aggregates and grains of several minerals occur with the graphite. They include: colourless, light yellow and grey clinopyroxene; colourless to grey columnar scapolite; brown titanite; yellow to orange chondrodite; black tourmaline; amber mica; colourless to light green apatite; dull green serpentine; colourless to light green clinoamphibole, purple ftuorite (rare); orange-red to brownish red garnet; and magnetite, pyrite, pyrrhotite and molybdenite. Rozenite occurs as white encrustations on rusty crystalline limestone. Reddish sunstone occurs in pegmatite.

Mineral Record Details

References

Mono - Report Of The Ontario Iron Ore Committee With Appendix 1923

Publication Number: NSP013 Page: 217  Date: 1998

Author:

Publisher Name:

Location:

Part - Mineral occurrences in the Haliburton area

Publication Number: ARV52-02 Page: 45  Date: 1998

Author: Satterly J.

Publisher Name: Ontario Dept. of Mines

Location:

Publication - Rocks and Minerals for the Collector, Bancroft-Parry Sound Area and Southern Ontario; Geological Survey of Canada, Miscellaneous Report 39

Publication Number: Misc Rep 39 Page: 37-39  Date: 1986

Author: Sabina, A.P.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/121046

Mono - Report Of The Royal Commission On The Mineral Resources Of Ontario And Measures For Their Development

Publication Number: NSP011 Page: 132  Date: 1998

Author:

Publisher Name:

Location:

Folio - Glamorgan Township, Haliburton County

Publication Number: GDIF057 Date: 1997

Author: Bancroft RMSO

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office