Ontario Geological Survey
Permanent Link to this Record:
MDI42D09NE00003
| Record Name(s) | Padre Barite - 1983, K. Gracey - 1991, M. Pezim - 1991 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-26 |
| Date Last Modified | 2023-Jul-19 |
| Created By | |
| Revised By |
Primary Commodities: Barite, Gold
Secondary Commodities: Silver
Township or Area: Pic
Latitude: 48° 41' 25.49" Longitude: -86° 13' 7.68"
UTM Zone: 16 Easting: 557492 Northing: 5393336 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D09NE
Point Location Description: AMIS trench location, map from assessment report 42D09NE0173
Location Method: Data Compilation
1983: Padre Resources Ltd. carried out ground magnetometer and IP surveys, soil geochemical surveys, geological mapping and prospecting, trenching, rock sampling, and drilled 5 DDH totaling 977.76 m. 1995: Hemlo Gold Mines Inc. optioned the property and drilled 1 DDH totaling 626.7 m. 2005: D. Michano carried out prospecting, stripping, trenching, and sampling. 2006-7: Beaufield Resources conducted geological mapping and sampling. 2010: Jiminex Inc. carried out IP and audio-magnetotelluric ground geophysical surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 28 | 42D09NE0192 | 42D09NE0192 |
| 2.6997 | 42D09NE0173 | 42D09NE0173 |
| 2.16392 | 42D09NE0057 | 42D09NE0057 |
| 2.36636 | 20000002567 | 20000002567 |
| 2.47621 | 20000006196 | 20000006196 |
| 2.32923 | 20000001578 | 20000001578 |
| 2.31197 | 20000000993 | 20000000993 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Graphititc |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | |||
| Schist-Unsubdivided | 3 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Barite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore |
Dec 17, 2018 (Therese Pettigrew) - The barite-rich horizon outcrops approximately 700 m west of the Black River Bridge on Highway 17, and 200 m north of Highway 17. Stripping has revealed a barite horizon, up to 1 m wide. A thin section shows the rock to contain up to 70% barite with minor pyrite, quartz, and carbonate. An assay of this material gave 35.7% BaO, with a specific gravity of 3.5 (Geoscience Laboratories, Ontario Geological Survey, Toronto). All rocks strike at 110 degrees and dip steeply to the south. To the south of the barite-rich horizon, are massive mafic metavolcanics intercalated with graphitic interflow metasediments. Approximately 25 m below the barite-rich horizon is a fragmental unit consisting of fragments of mafic metavolcanics and graphitic schist in a biotite-rich matrix. A quartz-feldspar porphyry, with distinctive blue quartz eyes, intrudes parallel to foliation and is in contact with a biotite-green mica-carbonate schist containing minor fluorite. This rock contains 20^o apple green mica. A quantitative spectrographic analysis of the green mica indicates more than 0.1 to 0.5% barium, 0.1 to 0.5% chromium, and 0.05 to 0.1% strontium (Geoscience Laboratories, Ontario Geological Survey, Toronto). This is followed by 1 m of the barite-rich rock. Directly above this unit is a sericite-carbonate schist containing up to 15 to 20%) pyrite. Assays of this unit returned up to 42 parts per billion gold (Geoscience Laboratories, Ontario Geological Survey, Toronto). To the north of this unit is a siltstone with graded beds indicating tops to the north. In drill core, a number of cataclastic zones, consisting of wallrock fragments in a fine-grained matrix stained red by hematite, are associated with the barite zone. In thin section, some of the fragments are lamprophyres similar to those associated with the Coldwell Complex (age ~ 1.04 billion years). Pelitic metasediments which occur to the north of the siltstone contain andalusite, kyanite, sericite, and quartz. The assemblages are indicative of low to mid-amphibolite grade metamorphism (Patterson, 1984). Samples taken by Padre Resources from the mineralized zone yielded assays of up to 0.014 opt Au (0.43 gpt Au) and 0.5 opt Ag (15.6 gpt Ag). Hemlo Gold conducted ICP tests on samples, which returned values of locally elevated As (up to 1540 ppm), Cr (up to 2410 ppm), Hg (up to 80 ppm) and Ni (up to 1305 ppm) occurring in a green mica schist unit, and Sb (up to 5.8 ppm) from biotite altered footwall sediments. The Ba XRF results returned values up to 42800 ppm from the Baritic Zone (Assessment file 42D09NE0057).
Mono - Field trip guidebook to the Hemlo area
Publication Number: MP118 Page: 15-16 Date: 1984
Author: Patterson G.C.
Publisher Name: Ontario Geological Survey
Location:
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