Ontario Geological Survey
Permanent Link to this Record:
MDI41K16SW00031
| Record Name(s) | Fenwick No 1 - 1971, Probyn Creek - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Sep-01 |
| Date Last Modified | 2022-Apr-26 |
| Created By | |
| Revised By |
Primary Commodities: Lead, Zinc, Silver
Secondary Commodities: Copper, Gold
Township or Area: Fenwick
Latitude: 46° 46' 48.7" Longitude: -84° 22' 46.31"
UTM Zone: 16 Easting: 700033.999 Northing: 5184072.996 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 41K16SW
Point Location Description: Pit
Location Method: AMIS Site Visit
Access Description: North from Sault Ste Marie on highway 17, turn west into driveway and drive 0.40 km to third house at end. Walk along cliff edge some 60m.
circa 1900: pitting, trenching. 1970: W. Doughty - stripping, trenching
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| FENWICK 0010-B1 | 41K16SW9500 | 41K16SW9500 |
Province: Superior
Geological Age: Archean
Dec 07, 2005 (P Beach) - Disseminations in bed of greywacke with basalt fragments.
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Tuffaceous | Hanging Wall |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Footwall | ||
| Vein | 3 | Quartz | Host |
May 04, 2011 (A Wilson) - The mineralized zone consists of a two foot (1.0 to 3.0 foot) bed of limy greywacke and basalt fragments directly overlying a basaltic flow top and succeeded by another basalt flow. Strike is 155° and tops dip 62°NE. The limy parts of the bed are comprised of fine-grained calcite, possibly some other carbonates, and minor quartz. Born noted the presence of two quartz-carbonate veins in the vicinity of the main showing. One vein was traceable for 20 m.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Galena | Economic | Ore | ||||
| 2 | Sphalerite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Bornite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue |
May 04, 2011 (A Wilson) - A 1.5 lb. chip sample across a fresh 2 foot wide surface assayed 0.41 oz/ton Ag; 0.22% Cu; 1.297% Pb; and 2.957% Zn. Sulphide contents are as follows: sphalerite, 1% to 10%; galena, trace to 3%; pyrite, O to 5% and chalcopyrite, trace. The sphalerite and chalcopyrite occur as fine to very fine grains distributed relatively uniformly through the bed. Pyrite is present as coarse to medium grains and is crudely banded. There is a slight increase in chalcopyrite content near pyrite grains. Galena is mainly present as fine grains. Most of the sulphides appear to occur as blebs rather than euhedral grains. A grab sample of the quartz vein, collected by the OGS in 1985, returned 760 ppb Au, 23 ppb Ag.
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Map - Geological series, Precambrian geology, Havilland-Goulais Bay area, Algoma District
Publication Number: P2959 Scale: 1:15,840 Date: 1986
Author: Born P., Worona R., Stephenson C.D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology of the Havilland-Goulais Bay area, District of Algoma
Publication Number: OFR5602 Page: 53-54 Date: 1987
Author: Born P.
Publisher Name: Ontario Geological Survey
Location:
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 133 Date: 1985
Author: Rose, D. G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
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