Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52A10NE00010

Record: MDI52A10NE00010

General

Mineral Record Identification
Record Name(s) Ancliff - 1967, N. Dzuba - 1967
Related Record Type Simple
Related Record(s)
Record Status Past Producing Mine Without Reserves or Resources
Date Created 1984-Nov-02
Date Last Modified 2022-Apr-26
Created By
Revised By

Commodities

Primary Commodities: Amethyst

Secondary Commodities: Copper, Zinc, Barite, Lead



Location

Township or Area: McTavish

Latitude: 48° 42' 41.18"    Longitude: -88° 33' 44.12"

UTM Zone: 16    Easting: 385075.83   Northing: 5396556.05    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52A10NE

Point Location Description: Claims TB352386 and TB 132986, mining locations 7 and 5, McTavish Twp.

Location Method: Conversion from MDI

Access Description: Highway 11/17 east to the Dorion Mine Road. Head south for 1.6 km., just before the second gravel pit turn east onto a bush road. Follow this road for 1 km. to the railway track. Follow the path for 600m to the west end of the occurrence.



Exploration History

1940s: area was prospected for base metal mineralization. Old workings consist of several trenches and the adit. 1967: Mr. Dzuba acquired the mineral rights and proceeded to work the claim for amethyst. 1970: stripping and shallow trenching. 1972: Dzuba carried out manual trenching. 1974: Dzuba dug trenches. 1976: Dzuba carried out blasting and trenching. 1977: Dzuba carried out power stripping. 1979: Dzuba carried out stripping, trenching, and blasting. Production continued for approximately 15 years, until about 1982. 1982: Noranda Exploration Company Ltd. carried out linecutting, geological mapping, rock and soil sampling, and mag and EM geophysical surveys. 1986: property was staked by J.W. Redden. 1988: J.W. Redden carried out stripping and a VLF-EM survey. 2014: D. Kalik and J. Harasym carried out stripping and trenching.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
2.5900 52A10NE0026 52A10NE0026
2.10306 52A10NE0019 52A10NE0019
2.12027 52A10NE0017 52A10NE0017
2.12028 52A10NE0021 52A10NE0021

Geology

Province: Southern

Subprovince: Nipigon Basin

Formation Group: Sibley Group

Geological Age: Paleoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Breccia-unsubdivided 1 Host
Terrigenous-Clastic-Unsubdivided 2
Monzonite 3

Lithology Comments

Jun 01, 2018 (Therese Pettigrew) - The main part of the occurrence is in a wide carbonate-quartz breccia zone which has been traced along strke for 600 m at an azimuth of approximately 090 degrees. The breccia separates Archean monzonite to the north from Sibley Group mudstone to the south. The monzonite is dark pink and massive, the mudstone is red, fine grained, thinly bedded, with small grey reduction spots.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1AmethystEconomicOre
2ChalcopyriteEconomicOre
3GalenaEconomicOre
4SphaleriteEconomicOre
1QuartzEconomicGangue
2CarbonateEconomicGangue

Mineralization Comments

Jun 01, 2018 (Therese Pettigrew) - Silicification of the mudstone is evident close to the breccia zone. The breccia zone varies from 1.5 to 4. M wide and consists of angular clasts of monzonite and mudstone in a matrix of quartz, calcite, and some barite. Sulphides, chalcopyrite, galena, and sphalerite occur in disseminations and veinlets towards the northeastern end of the breccia. Amethyst occurs in the quartz-carbonate matrix and as spectacular points lining some very large vugs in the vein. The colour of the amethyst is quite variable, from almost pink to very dark purple (Garland, 2000).



Mineral Record Details

References

Map - Geological series, McTavish Township (east part of north half), District of Thunder Bay

Publication Number: P0721 Scale: 1:15,840    Date: 1997

Author: McIlwaine W.H.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:


Mono - Amethyst deposits of Ontario

Publication Number: GB05 Page: 43-52  Date: 1998

Author: Vos M.A.

Publisher Name: Ontario Division of Mines

Location:


Publication - Fort William and Port Arthur, and Thunder Cape Map-area, Thunder Bay District, Ontario; Geological Survey of Canada, Memoir 167

Publication Number: GSC Memoir 167 Page: 172  Date: 1931

Author: Tanton, T.L.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/100799


Mono - Industrial minerals of northern Ontario-supplement 1

Publication Number: OFR5388 Page: 8-9  Date: 1982

Author: Vos M.A., Abolins T., Smith V.

Publisher Name: Ontario Geological Survey

Location:


Mono - Amethyst in the Thunder Bay Area

Publication Number: OFR5891 Page: 105-109  Date: 1994

Author: Garland M.I.

Publisher Name: Ontario Geological Survey

Location:


Article - Port Arthur District

Publication Number: MP023.003 Page: 44  Date: 1997

Author: Kustra C.R.

Publisher Name: Ontario Dept. of Mines

Location:


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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office