Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31C15NW00017

Record: MDI31C15NW00017

General

Mineral Record Identification
Record Name(s)	Cook - 1984, Babcock - 2000
Related Record Type	Simple
Related Record(s)
Record Status	Occurrence
Date Created	1984-Sep-21
Date Last Modified	2023-Mar-22
Created By
Revised By

Commodities

Primary Commodities: Gold

Secondary Commodities: Arsenic

Location

Township or Area: Clarendon

Latitude: 44° 54' 18.56" Longitude: -76° 57' 2.06"

UTM Zone: 18 Easting: 346011.53 Northing: 4974265.14 UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31C15NW

Point Location Description: Pit in dot symbol ' As ' near Mississippi River, E of Fernleigh.

Location Method: Conversion from MDI

Access Description: 200 m W of the gravel road running N-S from Swauger's Lake to the Mississippi River.

Exploration History

1901: Cook carried out stripping and sank a 40 ft shaft. 1965: Emrex Mining Ltd. carried out trenching and drilling totaling 130m. 1968: P.W. Kingston completed two diamond drill holes totaling 61m. 1990-92: E. Sherlock carried out geology, geochem and geophysics under the OPAP program.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
2.13701	31C15NW0007	31C15NW0007

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Geological Age: Mesoproterozoic

Lithology

Lithology Data
Rock Type	Rank	Composition	Relationship
Limestone	1		Adjacent
Diorite	2	Diorite	Adjacent
Vein	3		Contains

Lithology Comments

Apr 30, 2021 (Sheree Hinz) - The Cook Property is located within a belt of dolomitic marbles with subordinate calcitic beds approximately 500 metres north of the contact of underlying mafic to intermediate volcanic rocks. The dolomitic marbles are massive, very fine-grained and light brown-to-pink and buff white in colour. The marbles exhibit a plastic style of deformation along the contacts of amphibolite and quartz-feldspar porphyry dikes. A north to northwest-trending amphibolite dike intrudes the marbles and parallels the easternmost pits of the Cook Property.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Gold	Economic	Ore
2	Arsenopyrite	Economic	Ore

Mineralization Comments

Apr 30, 2021 (Sheree Hinz) - The gold mineralization is associated with patchy arsenopyrite. A sample taken over a 1.2m wide section of brecciated dolomite in 1968 (Kingston) which hosted disseminated to massive sphalerite-chalcopyrite-pyrite-galena-tetrahedrite mineralization gave returns of 0.6% Cu, 6% Zn, 5% Pb, 7 oz/ton Ag, and 0.05 oz/ton Au. Assays taken in 1987 varied from 0.19 oz/t to 0.87 oz/t Au with an average of 14% arsenic. A dump sample collected by Pauk (1987) yielded 3.00% of arsenic and traces of gold, copper, and silver.

Mineral Record Details

References

Part - Geology of the Clarendon-Dalhousie area

Publication Number: ARV65-07.001 Page: 39 Date: 1998

Author: Smith B.L.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario

Publication Number: MDC018 Page: 41 Date: 1979

Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.