Ontario Geological Survey
Permanent Link to this Record:
MDI42A07NE00019
| Record Name(s) | Sonic Drill Hole 87-70 - 1988 |
|---|---|
| Related Record Type | Simple |
| Record Status | Discretionary Occurrence |
| Date Created | 1992-Mar-05 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | A Wilson |
Primary Commodities: Gold
Secondary Commodities: Copper, Lead, Zinc
Township or Area: Currie
Latitude: 48° 29' 37.03" Longitude: -80° 38' 25.92"
UTM Zone: 17 Easting: 526557.91 Northing: 5371228.68 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A07NE
Point Location Description: Sonic drill hole 87-70.
Location Method: Conversion from MDI
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean
Dec 08, 2015 (A Wilson) - At hole 87-70, the uppermost package extends to a depth of 32.0 m and is associated with ice which advanced toward 170º azimuth. The stratigraphy of this package is varved clay and silt, deposited in proglacial lakes Barlow and Ojibway, overlying a 18.3 m interval of till. The till was subglacially deposited, into an environment with periods of ponded meltwater. The "middle" glacial package includes all sediments between 32.0 m and 41.8 m. At the top of this package is a unit of varved clay and silt. These glaciolacustrine sediments are extremely dense, having been overconsolidated by the overriding ice associated with the upper glacial package. The till unit beneath the clay and silt may have been deposited at the ice margin or beneath the ice sheet. Field work associated with drilling indicated ice from which till of this package was deposited advanced toward 240º azimuth. The stratigraphy of the "lowest" package between 41.8 m and 47.2 m is varved clay and silt overlying till. The till was subglacially deposited, probably by the lodgement process.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore |
Dec 08, 2015 (A Wilson) - Multiple gold grains were recovered from this drill hole. Samples returned values ranging from 44 ppb to 1000 ppb Au
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
Map - Geophysical/geochemical series, sonic drillhole 87-70, Currie Township, Cochrane District
Publication Number: M81134 Scale: Date: 1988
Author: Steele K.G., Baker C.L., McClenaghan M.B., Johnstone R.M., Bloom L.B.
Publisher Name: Ontario Geological Survey
Mono - Rotasonic drilling operations (1984) and overburden heavy mineral studies, Matheson area, District of Cochrane
Publication Number: OFR5569 Scale: Date: 1986
Author: Averill S.A., MacNeill K.A., Huneault R.G., Baker C.L.
Publisher Name: Ontario Geological Survey
Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt
Publication Number: P3398 Scale: 1:100,000 Date: 1999
Author: Ayer J.A., Berger B.R., Trowell N.F.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office