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Ontario Geological Survey
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MDI31F02NE00104
| Record Name(s) | Lac-Homestake - 2000, Gleeson-Rampton #1 - 2000, Clyde Property - 2000 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1993-Mar-12 |
| Date Last Modified | 2022-Jun-17 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Copper
Township or Area: Darling
Latitude: 45° 13' 53.93" Longitude: -76° 33' 48.28"
UTM Zone: 18 Easting: 377277.019 Northing: 5009872.876 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F02NE
Point Location Description: Triangle symbol ' 12 ' at SW end of Darling Long Lake.
Location Method: Conversion from MDI
Access Description: The location point marks the Gleeson-Rampton # 1 occurrence which lies in the area covered by Lac and Homestake claims, which are very extensive. They lie within the RLMZ as described by Easton and deKamp (OGS 1987).
The Gleeson-Rampton # 1 occurrence was initially outlined by Gleeson and Rampton in the early 1980s using geochemical soil surveys. This was later followed up by Lac Minerals Ltd and Homestake Minerals Development Co. (as well as others). These two companies both carried out extensive exploration programs in Darling and Lavant townships ( the Homestake properties were known under the ' Clyde ' name). Claims staked fall into the W and NW part of Darling township and work is recorded in the OGS AFROs. It is somewhat confusing, but exploration is centered around gold showings in the E part of the RLMZ, hosted within ferroan dolomitic marble bands and associated with zones of carbonatization, silicification and quartz veining. Claims cover parts of cons 1 to 7, lots 7 to 24.
Province: Grenville
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - Nine or more similar, gold-bearing deposits, lie within a 19 km long belt; part of the RLMZ. The E part of the RLMZ appears to be a favourable target for gold, and geochemistry has been a useful tool in outlining areas of mineralization. It is suggested (Easton and deKemp) that favourable target areas would be where the RLMZ intersects other faults and splays off the main shear zone.
| Rock Type | Rank | Composition | Texture | Relationship | Dolomite Marble | 1 | ferroan |
|---|---|---|---|---|
| Vein | 2 | quartz |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Tetrahedrite | Economic | Ore |
Jun 17, 2022 (C Papertzian) - Mineralization consists of disseminated grains of tetrahedrite and cp, locally with minor bornite, sphalerite and py, within quartz veins and lenses of white dolomite. Sulphide content is generally less than 5 %. Au values of up to 1 g/t were reported from the Clyde property.
Mono - Exploration for gold in southeastern Ontario, 1980-1990
Publication Number: OFR5808 Page: 46-54 Date: 1991
Author: LeBaron P.S.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Darling area, Lanark and Renfrew counties
Publication Number: OFR5693 Page: 161 Date: 1988
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology, Clyde Forks area
Publication Number: P3093 Scale: 1:50,000 Date: 1990
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
Article - Darling area, Lanark and Renfrew counties
Publication Number: MP137.034 Page: 220-228 Date: 1997
Author: Easton R.M., de Kemp E.A.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist files 1985-9, AFRO # 28-32, 37-43, 45-66, 70
Publication Number: Date: 2000
Author:
Publisher Name:
Location: Tweed RGP
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office