Ontario Geological Survey
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MDI000000000204
| Record Name(s) | Albany Porphyry Zone - 1989, No. 17 and 18 Veins - 1989 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 2006-Dec-20 |
| Date Last Modified | 2022-Jan-19 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Connell
Latitude: 51° 30' 56.73" Longitude: -90° 1' 49.4"
UTM Zone: 15 Easting: 706037 Northing: 5711363.01 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O09SE
Point Location Description: Centre of stripped area.
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. 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.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Pickle Lake
Geological Age: Mesoarchean Geochronological Age: 2735 +/- 10 Ma Geochron. Age Ref.: Young et al., 2006
Dec 20, 2006 (Mark Puumala) - The geology of the Pickle Crow area is described in MDI52O09SE00007.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Host |
|---|---|---|---|---|
| Porphyry-unsubdivided | 2 | Near | ||
| Mafic lava flow-unsubdivided | 3 | Near | ||
| Ironstone-unsubdivided | 4 | Near |
Jan 19, 2022 (Therese Pettigrew) - The Albany porphyry is 670 m in length by 120 m in width, with the sides of the body striking N60ºE. This stock is somewhat irregular at the ends with lobes and dike-like apophyses. Some of the associated dikes are parallel with the trend of the enclosing rocks but others are crosscutting. From surface to the 625 ft (190 m) level the stock dips 65ºNW. On surface the major axis of the stock makes a small angle with the strike of the enclosing rocks. The stock appears to maintain a similar shape and extend down the dip with no known plunge. The Albany porphyry has recently been age dated by U-Pb zircon (SHRIMP) analysis at 2,735 +/-10 Ma (Young et al., 2006). The Albany porphyry is a rock of faintly pinkish colour with abundant feldspar phenocrysts, scattered quartz phenocrysts and a few biotite crystals all of which are about 2 mm in size. In its most unaltered state it appears granodioritic in composition. In thin section the feldspar is considerably altered to white mica and in some local areas to saussurite. Some of the quartz phenocrysts are individual crystals but other phenocrysts consist of clusters of crystals. Quartz and carbonate occur as trains of interstitial material between the larger feldspar phenocrysts. Small crystals of apatite are enclosed within the large biotite crystals (Hennessey, 2018).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore |
Aug 29, 2007 (Mark Puumala) - The Albany Porphyry Zone encompasses a large area containing numerous narrow, gold-bearing quartz veins, including the No. 17 and 18 vein systems of MacGregor (1989). The No. 17 and 18 veins are two ENE-striking veins that are exposed at surface approximately 150 to 250 m west of the Albany Shaft. McGregor (1989) indicates that the No. 17 vein consists of a system of narrow veins covering a strike length of at least 120 m. Grab samples collected by Noramco from this zone assayed up to 1.25 oz/ton, while chip samples collected across the zone averaged 0.19 oz/ton Au over a strike length of 33 m (McGregor 1989). The best diamond drill intersection for this zone reported by McGregor (1989) was 0.13 oz/ton over 2.9m. The No. 18 vein is reported by McGregor (1989) to have an indicated grade of 0.13 oz/ton. The No. 17 and 18 vein systems are located along strike from the No. 8 vein. No reserve estimates are provided for these veins by McGregor (1989). Note that the No. 17 Vein of McGregor (1989) appears to be the equivalent of the E-Zone of Pye (1976).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| 2 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Date: Jul 18, 2007
Geologist: Mark Puumala
Notes: On July 18, 2007 a large stripped area dominated by quartz-feldspar porphyry (intruding banded iron formation) was observed at UTM Zone 15, 706037E, 5711363N. The porphyry intrusion is cross-cut by a long (> 40 m exposed length), contorted quartz vein. This vein is milky-white, has a general orientation of 075, and ranges in width from approximately 2 to 30 cm wide. This vein is folded near the eastern end of the exposure, exhibiting Z-asymmetry.
Book - Report on Phase A of a Feasibility Study of the Pickle Crow/Central Patricia Deposits
Publication Number: Scale: Date:
Author: McGregor, J.A. 1993.
Publisher Name: unpublished report, mineral deposit files
Location: Thunder Bay RGP
Journal - Pickle Lake revisited: New Structural, Geochronological and Geochemical Constraints on Greenstone Belt Assembly, Western Superior Province, Canada; Can. Journal of Earth Science. 43, p. 821-847
Publication Number: Can Jour ES 43 Scale: Date: 2006
Author: Young, M. D., McNicoll, V., Helmstaedt, H., Skulski, T., and Percival, J. A.,
Publisher Name: Canadian Journal of Earth Science
Location:
Book - Report on Mineral Reserves at the Pickle Crow Property for Noramco Mining Corporation
Publication Number: Scale: Date:
Author: McGregor, J.A. 1989.
Publisher Name: unpublished report, mineral deposit files
Location: Thunder Bay RGP
Mono - Geology of the Crow River area, District of Kenora (Patricia Portion)
Publication Number: OFR5152 Scale: Date: 1976
Author: Pye E.G.
Publisher Name: Ontario Division of Mines
Location:
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