Ontario Geological Survey
Permanent Link to this Record:
MDI52F10NW00007
| Record Name(s) | Little Jumbo - 1986 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1986-Aug-21 |
| Date Last Modified | 2022-Jul-12 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Van Horne
Latitude: 49° 43' 15.77" Longitude: -92° 54' 34.12"
UTM Zone: 15 Easting: 506525 Northing: 5507620.004 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F10NW
Point Location Description: Conc. 1, Lot 10, Van Horne Twp., K672028
Location Method: Conversion from MDI
Access Description: The property is accessible by an old trail that extends southeast from Pritchard Lake to the northwest shore of Guy Lake. Walk east from the road along the north shore of Guy Lake to find the property.
1898: Shaft sunk to 55 ft. with 20 ft. of crosscutting. 1911: The shaft was reported to have been sunk for 50 ft. by Mr. J.R.Walker. 1982: Acquired by H. Hodge. 1983: Van Horne Gold Exploration Incorporated conducted geological mapping, sampling, and geophysical surveys over the claim. 1987: Van Horne Gold Exploration Incorporated diamond drilled one 393 ft. hole beneath the shaft.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.6679 / 52F10NW NN-3 | 52F10SW0012 | 52F10SW0012 |
Province: Superior
Geological Age: Precambrian
Jun 11, 2010 (J Bongfelt) - The prospect is underlain by fine-grained, dark gray-green, chloritic, carbonatized, intermediate to mafic, heterolithic, tuff-breccia and massive flows of the Lower Wabigoon Volcanics, intruded by a 4.6 m to 6.0 m wide, massive, medium-grained, pink to red quartz-feldspar porphyry dike striking 120º.
Jun 11, 2010 (J Bongfelt) - A small, deep, shaft has been sunk on the sheared felsic dike which hosts stringers and veins of quartz-calcite-tourmaline containing <1% disseminated pyrite. The veins are controlled by the shear and fractures within the dike. The dike has been mylonitized and contains large, elliptical, blue, quartz "eyes" embedded in a fine-grained matrix. The dike is also intensely carbonatized, fissile, soft, crumbly, and buff-white, however, some pieces of the dike rock in the dump are relatively massive and un-deformed, indicating variable deformation of the dike within the shear zone. All the rocks on the dump are poor in sulphides. A 1.8 m deep test pit is situated approximately 122 m southeast of the shaft and has been sunk on quartz veins at the west contact of the quartz-feldspar porphyry dike with massive intermediate flows. A stockwork of tension fracture-hosted quartz veins striking 1360 occur within the metavolcanic flows and felsic dike. Variable [<1-5%], disseminated pyrite occurs throughout the wall rocks and quartz veins. Another shallow test pit is situated on the east side of the dike approximately 61 m southeast of the first test pit.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Pyrite | Economic | Ore | ||||
| 10 | Tourmaline | Economic | Ore |
Jun 11, 2010 (J Bongfelt) - Grab samples of the quartz veins and wall rocks at the shaft assayed trace amounts of gold, but a grab sample of the quartz vein at the test pit, 122 m southeast of the shaft, assayed 4110 ppb gold. A grab sample of "spotted schist," taken by A.P. Coleman (1898) from the shaft, assayed l ounce gold per ton. Coleman reported that the "spotted schist" assayed "on the average S14.00 per ton" (0.83 ounce gold per ton). Parsons (1911) reported that the quartz vein at the shaft asayed 0.99 ounce gold per ton. Van Horne Gold Exploration Incorporated diamond drilled one hole beneath the shaft with poor results. (OFR 5723 - 1989 - pg.228) Van Horne Gold Exploration Inc. produced the following assay results from grab samples: - 0.56 oz./ton Au - taken from quartz veins from pit dump (carbonate, minor tourmaline, common pyrite, disseminated in aggregates and a few stringers); - 0.08 oz./ton Au - taken from felsite dyke from pit dump (common disseminated pyrite) (Kenora AF 52F/10NW, NN-3, Van Horne Gold Exploration Inc., Map - Sampling Results - 1983) 1897: 55 ft. shaft w/20 ft. crosscut. Dark red schistose dike 18 ft. wide in agglomerate. - Reported to av. 0.78 oz. Au/ton. Grab sample assayed 1.0 oz. Au/ton. (OFR 5332 - 1981 - Feasibility of Small Scale Gold Mining in NW ON - Appendix E, Vol.2 of 2)
Part - Fourth report on the west Ontario gold region
Publication Number: ARV07-02.001 Page: 125 Date: 1998
Author: Coleman A.P.
Publisher Name: Ontario Bureau of Mines
Location:
Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices
Publication Number: OFR5332 Date: 1981
Author: Neilson J.N., Bray R.C.E.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Page: 24 Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Location:
Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices
Publication Number: OFR5332 Page: 41 Date: 1981
Author: Neilson J.N., Bray R.C.E.
Publisher Name: Ontario Geological Survey
Location:
Compend - Report of activities, 1985, Regional and Resident Geologists
Publication Number: MP128 Page: 36 Date: 1986
Author: Kustra C.R.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office