Ontario Geological Survey
Permanent Link to this Record:
MDI42E15SW00007
| Record Name(s) | Shields Occurrence (Hutchinson Lake) - 1991, J. Shields - 1991, G. MacIntosh - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Feb-05 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Fulford
Latitude: 49° 46' 15.8" Longitude: -86° 59' 29.94"
UTM Zone: 16 Easting: 500601.173 Northing: 5513176.142 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E15SW
Point Location Description: Stripped areas
Location Method: Conversion from MDI
Access Description: The property is located in Fulford Township, 6 km northwest of Geraldton between Dionne Lake (South) and Sedi Lake (North). Travel Highway 584 (Nakina Highway) north from Geraldton for 6 km to Burrows River Road. Continue northwest along the Burrows Road for 800 m, turn west for 1200 m along a bush road to a point on the northeast corner of the claim group.
1983: Six claims (TB766504 to TB766509) were staked by Jay Shields, a Geraldton prospector. 1984: Jay Shields held 6 claims. A work permit was issued (June 20 to October 15, 1984) for bulldozer stripping and diamond drilling.
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The property lies within the northern mafic metavolcanic sedimentary belt of the Geraldton camp. The area primarily consists of basic to intermediate metavolcanic flows (both massive and pillowed) and, within the claim block, units of feldspar porphyry dyke material. The rocks in the area generally strike east-west and dip steeply (80-85 degrees) to the south. Along the northern boundary of the claim block a major structural break known as the Burrows River Fault exists. The claim group adjoins the Hutchinson Lake Gold Mine property to the northeast. From 1946 to 1947, 792 ounces of gold and 46 oz of silver were recovered at an average grade of 0.52 oz/ton Au. This past-producer is described as shear zones with auriferous veinlets cutting mafic metavolcanics and a diabase dyke. To date, two mineralized shear zones containing discontinuous quartz veins and stringers have been uncovered on the property. Both systems trend east-north-east at 077 degrees and are separated by 300 m of intermediate metavolcanic tuffs and a series of east-trending, coarse grained quartz-feldspar porphyry dykes. The northern-most zone is exposed for 5 m and consists of sheared, silicified, quartz-feldspar porphyry wall rock and rusty milky white quartz. The en echelon vein widens from 10 cm to 40 cm on the western edge. Rare (<1%) disseminated pyrite was noted. The south or 'main' zone is exposed for approximately 10 m and consists of a sugary chloritic volcanic tuff. A quartz vein averaging 40 to 50 cm wide occurs in silicified chloritic volcanic tuff. The quartz contains chlorite-sericite seams and fractures and 1% disseminated subhedral to euhedral pyrite.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Pillowed Flows | Near |
|---|---|---|---|---|
| Intermediate pillowed flow | 2 | Pillowed Flows | Near | |
| Quartz-Feldspar Porphyry | 3 | Quartz-Feldspar | Host | |
| Vein | 4 | Quartz | Host | |
| Intermediate Tuff | 5 | Chlorite | Tuffaceous | Host |
| Felsic lava flow-unsubdivided | 6 | Shear | Host | |
| Intermediate Tuff | 7 | Andesite | Tuffaceous | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Epidote | Alteration | Epidotization | 1 | ||||
| Quartz | Alteration | Silicification | 2 |
Dec 07, 2005 (B Nelson) - Three samples taken by the Beardmore-Geraldton Economic Geologist in 1984 returned a maximum of <0.01 oz/ton Au.
Dec 07, 2005 (B Nelson) - Beakhouse and Chevalier (1983) noted prominent epidote alteration of the mafic metavolcanics.
Date: Jan 20, 1997
Geologist: B Nelson
Notes: The Beardore-Geraldton Economic Geologist visited the property in August of 1982, September of 1983 and June 19, 1984.
Map - Hutchison Lake area, District of Thunder Bay, Ontario
Publication Number: ARM50F Scale: 1:63,360 Date: 1997
Author: Macdonald R.D.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts
Publication Number: M2102 Date: 1997
Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of the Hutchison Lake area
Publication Number: ARV50-03 Date: 1997
Author: Macdonald R.D.
Publisher Name: Ontario Dept. of Mines
Location:
Folio - McQuesten Township, District of Thunder Bay
Publication Number: GDIF046 Date: 1997
Author: Thunder Bay RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Bouguer gravity of Ontario, west-central sheet
Publication Number: M2593 Scale: 1:1,000,000 Date: 1991
Author: Gupta V.K.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
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 Thunder Bay North Resident Geologist District Office