Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A11SE00006

Record: MDI42A11SE00006

General

Mineral Record Identification
Record Name(s)	Owl Creek - 1967
Related Record Type	Simple
Related Record(s)
Record Status	Past Producing Mine With Reserves or Resources
Date Created	1984-Aug-31
Date Last Modified	2022-Sep-21
Created By
Revised By

Commodities

Primary Commodities: Gold

Location

Township or Area: Hoyle, Hoyle

Latitude: 48° 33' 2.08" Longitude: -81° 8' 21.67"

UTM Zone: 17 Easting: 489716 Northing: 5377507 UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42A11SE

Point Location Description: Centre of open pit.

Location Method: AMIS Site Visit

Access Description: Access to the Kinross Gold Corporation's property is via gravel road extending from Florence Ave in Porcupine, Ontario. This road arrives at the security gatehouse, whereby one is accompanied to the open pit by Kinross personnel.

Exploration History

1966-1973: International Nickel Co. - DD-5-1058 m, ground and airborne geophysics. 1978-84: Kidd Creek Mines Ltd. - DD-16-5578m. 1986-87: Syngold Exploration Inc. and Falconbridge Ltd. - DD-51-28,522 ft., resource calculation. 1982-1989: Kidd Creek Mines Ltd. - mine operated as open pit.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
T-3232 / OM86-5P-121 / 63.5196	42A11SE0913	42A11SE0913
T-3232 / OM87-5L-111 / 63.5127	42A11SE0115	42A11SE0115
T-1321 / 15	42A11SE0103	42A11SE0103
T-1321	42A11SE0102	42A11SE0102
T-1321	42A11SE0086	42A11SE0086
30	42A11SE0072	42A11SE0072

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Tisdale

Geological Age: Neoarchean

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Nov 04, 2011 (R Pressacco) - All of the stratigraphic units at Owl Creek strike in an east-northeasterly direction, with dips being generally to the north ranging from 45 to 90 deg. The host unit to the gold mineralization is a small massive basalt unit separated from a larger band of easterly striking mafic/ultramafic rocks by a thin interval of interbedded greywacke and argillitic sediments. Diamond drilling information has shown that this small basalt unit is a folded portion of the larger band to the north.

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Mafic lava flow-unsubdivided	1	Mg-Tholeiite	Massive/Pillowed, Local Variolitic+Amyg	Host
Terrigenous-Clastic-Unsubdivided	2	Greywacke	Interbedded Arkosic Wackes And Argillite	Near
Mudstone	3	Graphitic Argillite	Strongly Schistose	Near

Lithology Comments

Nov 04, 2011 (R Pressacco) - Stratigraphic tops in the mafic volcanic rocks are towards the south in the southern portions of the open pit. Textures are dominated by massive to pillowed flows with locally developed variolitic and amygdaloidal textures. These basalts have been variably altered by an assemblage of carbonate and sericite, resulting in a light grey to buff colouration. The greywackes are in fault contact on both the north and south contacts of the basalt flows, with a unit of strongly sheared carbonaceous argillite marking the fault contact. The greywackes are lithologically identical to greywackes of the Porcupine Assemblage and are composed of interbedded light to medium grey arkosic wackes and darker grey argillite typical of distal turbidites within a submarine fan environment. Graphitic argillites are the least abundant rocks at Owl Creek, and their distribution is confined to both the north and south contact of the basalt where they typically contain a sheared texture. The northern graphitic argillite ishighly sheared and is the locus of some of the quartz veining present in the open pit.

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	Pyrite	Economic	Ore
1	Quartz	Economic	Gangue
	Carbonate	Alteration		Carbonatization	1	Strong	Disseminated
	Sericite	Alteration		Unknown	2	Strong	Disseminated
	Quartz	Alteration		Unknown	3	Weak	Disseminated
	Chlorite	Alteration		Unknown	4	Weak	Stockwork

Mineralization Comments

Nov 04, 2011 (R Pressacco) - Gold content is proportional to content of disseminated pyrite in altered portions of the Mg-tholeiitic basalt unit. Some native gold, at times in spectacular amounts, is present in quartz veins, stockworks, and breccia zones.

Mineral Record Details

Classification
Rank	Classification
1	Hydrothermal

Characteristics
Rank	Characteristic
2	Breccia
1	Disseminated
3	Sheared

Mineral Zones - Size and Shape

Rank: 1 Structure Type: None

Zone Name: Detour Lake - Rank 1
Shape	Length	Thickness	Depth	Strike	Dip	Plunge	Trend	Age	Reference
Tabular	300	50	90	84	74

Reserves or Resources Data
Zone	Year	Category	Tonnes	Reference	Comments	Commodities
Owl Creek West	1997	Assay	6530954	OFR5985 p. 188	682,559 contained ounces	Gold 3.58 Grams per Tonne
Owl Creek East	1997	Assay	3019685	OFR5985 p. 188	696,371 contained ounces	Gold 7.17 Grams per Tonne

Production Data
Year	Tonnes	Commodities	Reference	Comment
1990	151904	Gold 542540 Grams	OFR5985 P. 188	AVERAGE GRADE 4.1 GPT AU, MILL RECOVERY 88.2%
1989	158645	Gold 617833 Grams	OFR5985 P. 188	AVERAGE GRADE 4.7 GPT AU, MILL RECOVERY 83.3%, CASH COST $US250/OZ
1988	99996	Gold 509542 Grams	OFR5985 P. 188	AVERAGE GRADE 5.4 GPT AU, MILL RECOVERY 93.6%, CASH COSTS $US290/OZ
1987	175444	Gold 805055 Grams	OFR5985 P. 188	AVERAGE GRADE 5.3 GPT AU, MILL RECOVERY 86.9%, CASH COSTS $US196/OZ
1986	150979	Gold 675088 Grams	OFR5985 P. 188	AVERAGE GRADE 5.8 GPT AU, MILL RECOVERY 76.9%, CASH COSTS $US213/OZ
1985	280000	Gold 1092014 Grams	OFR5985 P. 188	AVERAGE GRADE 3.9 GPT AU
1984	280000		OFR5985 P. 188	AVERAGE GRADE 4.0 GPT AU
1983	239000	Gold 979899 Grams	OFR5985 P. 188	AVERAGE GRADE 4.1 GPT AU
1982	250000	Gold 1024994 Grams	OFR5985 P. 188	AVERAGE GRADE 4.1 GPT AU

References

Book - Gold 86 - Excursion Guidebook, p. 34-36

Publication Number: Date: 1986

Author: J. Pirie and M.J. Downes (ed)

Publisher Name:

Location: Timmins RGO

Book - Northern Miner 78-11-23, Gold Group, p. 1, 23

Publication Number: NMINER Date: 1996

Author:

Publisher Name: Northern Miner

Location: Timmins RGO

Book - Northern Miner 79-11-15, Owl Creek, p. 1, 11

Publication Number: NMINER Date: 1996

Author:

Publisher Name: Northern Miner

Location: Timmins RGO

Book - Northern Miner 81-03-05, Texasgulf, p. B9

Publication Number: NMINER Date: 1996

Author:

Publisher Name: Northern Miner

Location: Timmins RGO

Book - Northern Miner 82-02-11, Kidd Creek, p. A1, A2

Publication Number: NMINER Date: 1996

Author:

Publisher Name: Northern Miner

Location: Timmins RGO

Book - Northern Miner 84-03-17, Kidd Creek, p. 21

Publication Number: NMINER Date: 1996

Author:

Publisher Name: Northern Miner

Location: Timmins RGO

Mono - Preliminary report on the Timmins-Kirkland Lake area, gold deposits file

Publication Number: OFR5467 Date: 1983

Author: Hodgson C.J.