Ontario Geological Survey
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MDI42A14SE00048
| Record Name(s) | Homestake T91-6, -7, -8 - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1999-Jun-16 |
| Date Last Modified | 2022-Nov-14 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Tully
Latitude: 48° 45' 26.07" Longitude: -81° 7' 54.26"
UTM Zone: 17 Easting: 490317.55 Northing: 5400478.442 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A14SE
Point Location Description: Point plotted on OBM topo map from information contained in Assessment File T-3338.
Location Method: Based on Assessment
Access Description: Access to northeastern and central Tully Twp is via the Ice Chest Lake road (gravel) to a point approximately 1 Km north of Sawmill Lake. From there the OBM map indicates a road leading west to the west side of the Buskegau River. Access to the remainder of the area is via bush trails.
Exploration activity by Homestake in 1991 focussed on a systematic follow-up of the gold intersection reported in DDH TU-1-3-70 by Hollinger Mines, and subsequent gold values by Esso Minerals (see MDI 42A14SE00029). Homestake DDH's T91-06, -07, and -08 were drilled along a straigraphic fence located approximately 500 metres to the southeast of the discovery hole and intersected numerous anomalous gold values as follow: T91-06: 413 ppb Au / 9.0 m (52.0 - 61.0 m); T91-07: 511 ppb Au / 8.5 m (40.0-48.5 m), 687 ppb Au / 5.5 m (151.0-156.5 m), and 1.976 g/t Au / 6.2 m [0.058 oz/ton Au / 20.3 feet] (176.0-182.2 m, includes 5.27 g/t Au / 1.0 m and 3.31 g/t Au / 1.0 m); T91-08: 390 ppb Au / 3.3 m (61.4-64.7 m), 1.83 g/t Au / 1.0 m (84.0-85.0 m), 1.29 g/t Au / 0.6 m (212.8-213.4 m), and 670 ppb Au / 3.0 m (224.6-227.6 m). The gold values in DDH T91-6 were associated with 3-5% pyrite, 1-5% arsenopyrite, and traces cpy. Similar associations were seen in hole T91-07, but there the arsenopyrite content increased locally to 7%. Arsenopyrite content drops down to the 2% range in hole T-91-08.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-3338, OM91-082 | 42A14SE2001 | 42A14SE2001 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Kidd-Munro
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Mafic massive flow | 1 | Leucox Basalt | Msv, Var | Near |
|---|---|---|---|---|
| Siltstone | 3 | Graphitic Argillite | Host | |
| Ultramafic lava flow-unsubdivided | 4 | Komatiite | Near |
Map - Timmins data series, Tully Township, District of Cochrane
Publication Number: P0699 Scale: 1:15,840 Date: 1997
Author: Hunt D.S., Richard J.A., Carey E.R.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office