Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31E01SE00021

Record: MDI31E01SE00021

General

Mineral Record Identification
Record Name(s) Harcourt Graphite Mine - 1986, National Graphite Ltd. - 1915, Space Minerals Ltd. - 1965, New York Graphite - 1912, Rinaldi Graphite Property - 1988, Frobisher Ltd. - 1951
Related Record Type Simple
Related Record(s)
Record Status Developed Prospect With Reported Reserves or Resources
Date Created 1981-Oct-23
Date Last Modified 2024-Jan-30
Created By
Revised By

Commodities

Primary Commodities: Graphite, Gold

Secondary Commodities: Silver



Location

Township or Area: Cardiff, Cardiff, Cardiff

Latitude: 45° 4' 23"    Longitude: -78° 10' 7.59"

UTM Zone: 17    Easting: 722860   Northing: 4994966    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31E01SE

Point Location Description: pit

Location Method: AMIS Site Visit

Access Description: South off of Highway 648 northeast of Wilberforce onto 4x4 road opposite east end of Upper Cardiff Lake. Walk up hill to tailings area and old mill site. Follow road to right up hill above mill site to ridge with open cuts and adit.



Exploration History

1912: New York Graphite Company - test pitting, DD, in production. 1915: National Graphite Limited - property acquired by National Graphite Limited. 1951: Frobisher Limited - Black Donald Division - DD-23-4270 ft. 1965: Space Minerals Ltd. - DD- 4. 1981: A.T. Griffis - mapping, ground geophysics, DD-6-299 m, core analysis. 1988: R. Rinaldi - DD-2-400 ft. 2016: Geology and mineralization of old workings mapped by the Municipality of Highlands East.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
Cardiff #32 31E01SE0086 31E01SE0086
2.4392 31E07SW0002 31E07SW0002
85 31E01SE0078 31E01SE0078
2.4473 31E01SE0023 31E01SE0023
63.5447 / OM88-9-I-279 31E01SE9437 31E01SE9437
2.56874 20000014567 20000014567

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Terrane: Bancroft

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Gneiss-Unsubdivided 1 Adjacent
Marble 2 Host

Lithology Comments

Nov 07, 2013 (A Wilson) - Most of the rocks are well foliated~ banded and interbanded. Banding in the diopsidic unit included some cyclical compositional and size gradation banding. Contacts between the rock units were generally gradational or assimilated and parallel to the gneissocity. The rocks were generally well foliated; the units were locally massive. Folding was visible - particularly in the calcareous unit; there were also displacement folds. Displacement of bands and shearing was fairly common in the units. Some serpentine, graphite, sulphides and calcite enrichment appeared to be related to shearing or fracture-filling. Breccias varied from a calcareous matrix to a sulphide and/or graphite rich matrix.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GraphiteEconomicOre
2AllaniteEconomicGangue
3ApatiteEconomicGangue
4GoethiteEconomicGangue
5JarositeEconomicGangue
6PyriteEconomicGangue
7TitaniteEconomicGangue

Mineralization Comments

Nov 07, 2013 (A Wilson) - 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 fluorite (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. Diamond drilling by Space Minerals Ltd in 1965 intersected 11 - 18 feet of graphite. The flake graphite is up to 1/8 inch in size. At surface, the graphitic zone strikes N60ºE and dips 10-23º to the southeast. The drilling indicates that at the easterly end the zone continues but is lower grade, and pitches to the south. It is open down dip to the south and along strike. Assays from historical drill core returned gold values up to 0.24 g/t over unspecified lengths and silver values up to 1.5 g/t also over unspecified lengths. Graphite concentrations from the historic core returned values ranging from 0.37% Cg over 0.5 m to 11.8% Cg over 0.25 m. Graphite occurs as fine to coarse-grained disseminations, and graphitic bands millimeters to centimeters wide. Graphite was generally more abundant in the green diopside gneiss and calcareous gneisses and less abundant in the biotite and granitic gneisses. The amount of graphite was also dependent on depth in the cores. Where graphite mineralization was observed in the pits, it generally consists of a seam of heavily mineralized flake graphite up to a foot or more thick with disseminations on either side. This heavily mineralized seam varies from a few inches to about a foot, generally a horizontal distance of 10 - 15 feet or less. Hole 88-1, drilled at -90º (vertical), intersected acid and basic paragneiss with varying amounts of flake graphite, sulphides (pyrite and pyrrhotite) and carbonate (calcite). Seams of semi-massive graphite were observed and a six inch section estimated at 90% graphite was intersected. The main zone of graphite mineralization, some 67 feet wide, has excellent correlation with the section drawn on the 1951 drill holes. Most of the graphite is medium fine to coarse medium grained (l mm-10 mm) recrystallized flake graphite. Hole 88-2, drilled at -SO 0 on a line with 1951 hole Nl (azimuth 330º), intersected a similar section of rocks and mineralization. More lost core was experienced in this hole, possibly because the hole is slightly closer to the scarp face or a fault was encountered. The width of the main graphite zone was fifty-one feet in this hole. A six inch seam of 80% graphite was observed which probably correlates with the high grade band observed in 88-1.



Mineral Record Details

Classification
RankClassification            
1 Industrial

Mineral Zones - Size and Shape

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Tabular 366 18
Reserves or Resources Data
Zone Year Category Tonnes Reference Comments Commodities
National Graphite Property 1955 Unclassified 1463107 IMR 020 1440000 tons @ 4.1% Cg; to a depth of 250 ft downdip within this orebody there is a richer zone of 800 000 tons grading 5% Cg Graphite 4.1 %

References

Book - 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


Part - Mineral occurrences in the Haliburton area

Publication Number: ARV52-02 Page: 41  Date: 1998

Author: Satterly J.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Geology of Cardiff and Faraday townships

Publication Number: ARV66-03 Page: 46  Date: 1998

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Graphite in Ontario

Publication Number: IMR020 Page: 20  Date: 1997

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Granitic pegmatites of the Bancroft area, southeastern Ontario

Publication Number: OFR5717 Page: 74  Date: 1990

Author: Goad B.E.

Publisher Name: Ontario Geological Survey

Location:


Map - Precambrian Geology, Wilberforce Area

Publication Number: P3526 Scale: 1:50,000    Date: 2003

Author: Lumbers S.B., Vertolli V.M.

Publisher Name: Ontario Geological Survey

Location:


Map - Cardiff and Faraday townships, counties of Haliburton and Hastings, Ontario

Publication Number: M1957-01 Scale: 1:31,680    Date: 1998

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Statistical review

Publication Number: ARV22-01.001 Page: 49, 139-140  Date: 1998

Author: Gibson T.W.

Publisher Name: Ontario Bureau of Mines

Location:


Part - Mines of Ontario

Publication Number: ARV25-01.003 Page: 39  Date: 1998

Author: Sutherland T.F., Collins E.A., McMillan J.G., Bartlett J.

Publisher Name: Ontario Bureau of Mines

Location:


MonoMap - Industrial minerals of the Algonquin region

Publication Number: OFR5425 Page: 12, 91  Date: 1983

Author: Martin W.

Publisher Name: Ontario Geological Survey

Location:


Map - Haliburton area, Province of Ontario

Publication Number: ARM52A Scale: 1:126,720    Date: 1998

Author: Satterly J.

Publisher Name: Ontario Dept. of Mines

Location:


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