Ontario Geological Survey
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MDI42A05NE00114
| Record Name(s) | Battle Mountain DDH Mc97-26 - 1997 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 1999-Feb-01 |
| Date Last Modified | 2022-Jan-05 |
| Created By | R Pressacco |
| Revised By | P Bousquet |
Primary Commodities: Gold
Township or Area: Denton
Latitude: 48° 21' 16.91" Longitude: -81° 35' 55.3"
UTM Zone: 17 Easting: 455647.2 Northing: 5355897.73 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A05NE
Point Location Description: Collar of DDH MC97-26
Location Method: Based on Assessment
Access Description: Access to the drill site is via Hwy 101 west from Timmins. Travel to a point approximately 2.3km west of the Hwy 144 turn-off where bush roads leading south from Hwy 101 bring you to the drill site. Drill site is located approximately 150 metres west of the Denton-Thorneloe Township boundary.
Diamond drilling by Hemlo Gold Mines Inc. in 1997 discovered anomalous gold mineralization hosted by hematized mafic volcanic rocks.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-3908 / 2.18006 | 42A05NE0169 | 42A05NE0169 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Jun 16, 2020 (G Seim) - DDH MC97-26 cut a succession of pillowed and massive mafic metavolcanic flows that are cut by numerous feldspar porphyry dikes. The dikes are typically narrow (< 1.0 m), but may comprise up to 50% of a 5 m section of core. The mafic metavolcanic rocks have been variably epidotized, sericitized, silicified, saussuritized, and hematized presumably in relation to the injection to the porphyry. The porphyry dikes are logged as pink to brick red in color, and as of fine-grained syenitic composition to coarse-grained, perthitic with zoned feldspars. Many of the assayed intervals within the hole returned greater than 200 ppb Au with 5 intervals returning values greater than 1 g/t Au. These 5 intervals sampled both hematized mafic metavolcanic rock and porphyry. Minor quartz veining and low concentrations of pyrite are associated with the gold bearing intervals.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Pillowed And Massive | Host |
|---|---|---|---|---|
| Porphyry-unsubdivided | 2 | Felsic | Zoned Feldspars | Host |
Jun 16, 2020 (R Pressacco) - The gold values were hosted by mafic volcanic rocks which have been completely hematized and contain minor quartz veining with trace sulphide minerals at 59.40-61.50m. A feldspar-porphyritic intrusive was intersected in the 22.8-48.2m interval that was described as follows: (quote) The porphyry which comprises 20% of the section varies from coarse perthitic with zoned feldspars to 1cm and fine syenitic rock. The porphyry is generally brick red hematititc, contacts are at 45-48 degrees to core axis. Porphyry veins range from 5cm to 80cm with a larger section at 37.5-39.6m (unquote).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue | ||||
| Hematite | Alteration | Hematization | 1 | Extreme | Replacement | ||
| Quartz | Alteration | Silicification | 2 | Extreme | Replacement | ||
| Epidote | Alteration | Epidotization | 3 | Strong | Replacement | ||
| Saussurite | Alteration | Saussuritization | 4 | Strong | Replacement | ||
| Sericite | Alteration | Sericitization | 5 | Strong | Replacement |
Jun 16, 2020 (G Seim) - The interval from 59.40 m to 61.50 m averaged 1.29 g/t Au over 2.10 m. The interval from 80.30 m to 81.40 m returned 1.64 g/t Au over 1.10 m. The interval from 84.50 m to 86.00 m returned 1.42 g/t Au over 1.50 m. The interval from 87.50 m to 89.00 m returned 1.20 g/t Au over 1.50 m. The interval from 149.70 m to 151.30 m returned 1.58 g/t Au over 1.6 m.
Date: Feb 01, 1999
Geologist: R Pressacco
Notes: The gold-bearing interval contained and average grade of 1.29 g/t Au along a core length of 2.10m.
Book - DIAMOND DRILL LOGS - DENTON TOWNSHIP, TIMMINS RESIDENT GEOLOGIST
Publication Number: Calhoun Scale: Date: 1997
Author: Calhoun, Bob
Publisher Name:
Map - Geological Compilation of the Timmins Area, Abitibi Greenstone Belt
Publication Number: P3379 Scale: 1:100,000 Date: 1998
Author: Ayer J.A., Trowell N.F.
Publisher Name:
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