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Ontario Geological Survey
Permanent Link to this Record:
MDI52O08NE00004
| Record Name(s) | Riopelle Vein - 1937, Dona Lake E - 1982 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1982-Sep-15 |
| Date Last Modified | 2022-May-17 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Connell
Latitude: 51° 29' 51.64" Longitude: -90° 3' 56.53"
UTM Zone: 15 Easting: 703668 Northing: 5709254 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O08NE
Point Location Description: Stripped vein exposure
Location Method: Field Visit with GPS
Exploration history of Pickle Crow Property: 1928: No. 1 vein discovered by J. MacFarlane and H.H. Howell. 1928-1930: Trenching and diamond drilling by Northern Arial Minerals. 1933: Shaft sunk on property by Northern Arial Minerals. 1934: Pickle Crow Gold Mines is incorporated. 1935-1966: Producing mine. 1937: Pickle Crow Gold Mines drilled on the extension of the Riopelle Vein. 1981-1984: Surface exploration and diamond drilling by Golden Shadow Resources and Gallant Gold Mines. 1985-1988: Diamond drilling, geophysics, outcrop stripping and geological mapping by Noramco Mining Corporation. 1988-1990: Partial feasibility study for underground mining by Noramco and Brampton Mining Services. 1999: property acquired by Wolfden Resources. 1999-2000: bulk sampling by Cantera Mines. 2006: Wolfden Resources has completed a 225 ton per day mill on the site to process 403,800 tonnes of ore that have been outlined in crown pillar areas. 2008: PC Gold Inc. purchased the property from Premier and conducted an exploration program including locating historical drill collars, surveying historical shafts, geological mapping, sampling, and a LiDAR survey. 2010: PC Gold carried out trenching and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.48536 | 20000008078 | 20000008078 |
| 63.5078 | 52O09SE0031 | 52O09SE0031 |
| 52O08NE0044 | 52O09SE0068 | 52O09SE0068 |
| 52O09SE0033C1 | 52O09SE0126 | 52O09SE0126 |
| 52O09SE0034 | 52O09SE0127 | 52O09SE0127 |
| 52O08NE0032 | 52O09SE0134 | 52O09SE0134 |
| 52O08NE0031 | 52O09SE0139 | 52O09SE0139 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Pickle Lake
Geological Age: Mesoarchean
Dec 20, 2006 (Mark Puumala) - The geology of the area is described in MDI52O09SE00007.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Adjacent |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 | Andesite | Adjacent | |
| Vein | 3 | Contains | ||
| Porphyry-unsubdivided | 4 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Tourmaline | Economic And Alteration | Gangue | Tourmalinization | 1 | ||
| 2 | Sericite | Economic And Alteration | Gangue | Sericitization | 2 | ||
| 1 | Gold | Economic | Ore | ||||
| 2 | Scheelite | Economic | Ore |
Dec 20, 2006 (Mark Puumala) - The Riopelle Vein is described by MacQueen (1987) as being hosted within the steeply north-dipping (65 to 75 degrees), ENE-striking Riopelle shear zone. The host rocks are described as basalt, with the vein occurring near the contact between a large massive flow and a unit of pillowed flows. This lithological contact has been folded, with a north- to NNE-striking fracture having developed off the main shear zone. This NNE-striking fracture contains the thickest portion of the vein. The vein ranges in thickness from 2 cm to 1 m and consists of coarse-grained white quartz mineralized with tourmaline, sericite, scheelite and visible gold. MacQueen indicates that the vein has been outlined for a strike-length of approximately 180 m and to a depth of 100 m. McGregor (1989) indicates that Noramco carried out surface sampling on this vein that provided an average Au grade of 0.24 oz/ton across 1.5 m for a strike length of 15 m. The most favourable diamond drill result for this vein reported by Winter (1987) was 0.278 oz/ton over a width of 0.3 m.
Jan 21, 2022 (Therese Pettigrew) - From Thomson (1938): "The Riopelle vein is on claim PA 730 and lies about half a mile southwest of the mine shaft. On the surface it consists of two separate parts with different strike. One part of the vein strikes northeast and dips 75 degrees NW. This is roughly parallel to the Howell vein but offset about 400 feet south of its projected strike. The quartz has a maximum width of about one foot. The other section follows a fracture through massive greenstone in a northwesterly direction and is much twisted and drag-folded (see photograph on page 26). The vein quartz is white and banded with chlorite and tourmaline. It ranges from a mere stringer to a vein more than 3 feet wide. To the northwest the vein disappears under swamp. A few particles of visible gold have been observed on the surface of the vein. Drill-holes were put down on the extension of the Riopelle vein in 1937 and cut gold-bearing vein material. According to a report covering mine operations during the early part of 1937, four of the holes showed values as high as $15.00 over 24 inches. One intersection assayed $12.25 over 30 inches; others gave $4.90 over 36 inches, $9.80 over 30 inches, $22.05 over 6 inches, and $14.70 over 6 inches." In 2010, PC Gold carried out trenching and sampling on Trench C, to the east of the Riopelle Vein. Channel samples returned 1.22 g/t Au over 3 m and 1.67 g/t Au over 3.5 m from late stage quartz veins crosscutting the BIF that may be possible extensions of the Riopelle Vein (Assessment report 20000008078).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| 2 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Date: Jul 18, 2007
Geologist: Mark Puumala
Notes: A stripped exposure of a portion of the Riopelle vein observed on July 18, 2007 had an average orientation of approximately 315/60 (i.e., northwest-striking). The east-northeast-striking portion of the vein could not be observed, apparently overlain by rubble from previous trenching. The general foliation orientation measured in a nearby outcrop of relatively weakly-deformed mafic metavolcanic rocks was 070.
Part - The Crow River area
Publication Number: ARV47-03.001 Page: 62 Date: 1997
Author: Thomson J.E.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Geology of Pickle Crow Gold Mines Limited and Central Patricia Gold Mines Limited, No. 2 operation
Publication Number: MP004 Page: 85 Date: 1966
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Thesis - Stratigraphy, Structure and Gold Mineralization of the No. 5 Vein/Iron Formation Zone, Pickle Crow Gold Mines, Pickle Lake, Ontario
Publication Number: MSc Thesis Date: 1987
Author: MacQueen, J.K.
Publisher Name: Carleton University
Location: Thunder Bay RGP
Book - Report on Mineral Reserves at the Pickle Crow Property for Noramco Mining Corporation
Publication Number: Date: 1989
Author: McGregor, J.A.
Publisher Name: unpublished report, mineral deposit files
Location: Thunder Bay RGP
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