Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O15SW00029

Record: MDI41O15SW00029

General

Mineral Record Identification
Record Name(s) Hammerstrom - 1946, Alcanex Zone 2 - 1992
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1999-Nov-26
Date Last Modified 2023-Mar-02
Created By
Revised By

Commodities

Primary Commodities: Gold, Cobalt



Location

Township or Area: Halcrow

Latitude: 47° 49' 25.99"    Longitude: -82° 56' 55.38"

UTM Zone: 17    Easting: 354143.144   Northing: 5298564.761    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O15SW

Point Location Description: Locn of trenches just north of a small lake

Location Method: Based on Assessment



Exploration History

1946: Hammertrom and Koski - prospecting (work not on file). 1980: Gossan Resources - resampling. 1984: Regal Petroleum - airborne geophysics, geological and geochemical mapping. 1990-91: Troup and Otton - mapping, sampling. 1992-97: Alcanex Ltd. (Lorac Properties option) - mapping, resampling, ground geophysics, geochemical surveys, trenching. 2005: Union Gold Inc. - prospecting, sampling, ground geophysics


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
T-2878 / 2.8113 41O15SW0083 41O15SW0083
T-3497 / OP91-611, 612 41O09NW0076 41O09NW0076
T-3594 / 2.16341 41O15SW0037 41O15SW0037
T-3594 / 2.16896 41O15SW0054 41O15SW0054
T-5271 / 2.31190 20000001072 20000001072
T-3497 / OP90-259, 260 41O09NW0076 41O09NW0076
T-2567 / 2.3962 41O10NW0096 41O10NW0096
T-3594 / 2.15214 41O15SW0047 41O15SW0047
T-4108 / 2.18794 41O15SW2007 41O15SW2007
T-2878 / 2.7152 41O10NW0016 41O10NW0016

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Halcrow-Swayze

Geological Age: Neoarchean   Geochronological Age: 2700 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Granite 1 Quartz-Feldspar Host
Mafic Schist 2 Schistose Host

Lithology Comments

Dec 07, 2005 (A Wilson) - The mineralization is primarily hosted in a set of thin slightly chlorite altered pink granitic bodies. These are interbanded with chloritic, schistose mafic metavolcanics. The schistosity in the chloritic mafic metavolcanics is discordant to the lithological banding. The schistosity trends 170.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1PyriteEconomicGangue
ChloriteAlterationChloritic1WeakDisseminated

Mineralization Comments

May 06, 2009 (D Draper) - In addition to significant gold values, two of the samples collected by Troup and Otten also returned assays of 374 ppm and 571 ppm cobalt. Union Gold sample 348562 returned 789 ppb Au and 431 ppm Co from a 1 m chip sample across a porphyry-volcanic contact (T-5271)


Dec 07, 2005 (A Wilson) - Grab samples collected by Hammerstrom and Koski in 1946 returned values of 4.1 g/t Au. Sampling conducted by Troup and Otton in 1990 returned values up to 2.9 g/t Au. A number of low grade gold values (0.8 - 1.7 g/t Au) were obtained from the sampling conducted by Lorac in 1992. Mineralization is associated with disseminated pyrite which forms the greatest concentrations in the granitic rocks.



Mineral Record Details

Characteristics
Rank Characteristic            
1 Disseminated

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
Unknown 4 70 90

References

Map - Halcrow and Denyes townships, Sudbury District

Publication Number: M2120 Scale: 1:31,680    Date: 1997

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:


MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)

Publication Number: OFR5912 Page: 236-237  Date: 1995

Author: Fumerton S.L., Houle K.A.

Publisher Name: Ontario Geological Survey

Location:


Map - Geological Compilation of the Swayze Area, Abitibi Greenstone Belt

Publication Number: P3511 Scale: 1:100,000    Date: 2002

Author: Ayer J.A., Trowell N.F.

Publisher Name: Ontario Geological Survey

Location:


Map - Geology, Swayze greenstone belt, Rollo Lake, Ontario

Publication Number: OF 3384b Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210450


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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office