Ontario Geological Survey
Permanent Link to this Record:
MDI52F03NW00009
| Record Name(s) | Noranda - Fairservice - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-02 |
| Date Last Modified | 2022-Jul-07 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Bluffpoint Lake Area
Latitude: 49° 8' 56.16" Longitude: -93° 18' 48.91"
UTM Zone: 15 Easting: 477132.032 Northing: 5444059.607 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F03NW
Point Location Description: Transfer
Location Method: Conversion from MDI
Access Description: The property lies between the Lakes: Bluffpoint, Harris, Pine and Straw. This area is about 60 km directly north of Fort Frances, Ontario. Access is via a Boise-Cascade logging road, branching off of the newly constructed Dryden - Fort Frances highway. The Noranda - Fairservice option is north and east of the point where this all-weather logging road passes Straw Lake. Float plane access is possible via Straw Lake. (Noranda Exploration Co. Ltd., Assessment File F/3 NW I-4, p.1, Kenora Resident Geologist Office)
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 14 / 52F03NW I-3 | 52F03NW0032 | 52F03NW0032 |
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
Feb 19, 2010 (C Ravnaas) - The property lies within the Wabigoon Volcanic-Plutonic Belt. It is almost entirely underlain by intrusive rocks of the Lawrence Lake Batholith (LLB). The LLB is considered to be of Algoman age, intruding the Keewatin supracrustal units. The northern portion of the claim group is underlain by biotite-(hornblende) diorite and biotite-(hornblende) quartz diorite. The latter is younger than the former. To the south there are variably magnetic, fine- to medium-grained magnetic granodiorites. These rocks post-date the diorites. Metamorphism varies from nil to very low grade. Minor hydrothermal alteration is occasionally observed. The predominant structural features are NE-trending shear zones. All rocks are affected by shearing and are intruded by porphyritic and non-porphyritic felsic dikes. Quartz veins may be observed in all rock types. No absolute dates have been determined from the property work. The batholith displays an intrusive contact against the supracrustals to the southwest and southeast. The contact is not exposed in outcrop on the property. The size and shape of the pluton can not be determined from this property mapping alone. The batholithic rocks commonly display a massive texture, with equigranular grains. Where a foliation is observed, it is a weak primary foliation. This foliation is due to the alignment of biotite and/or hornblende. No trend pattern has been deduced for the foliation. Xenoliths of volcanic rocks occur as well as probable autoliths, of quartz diorite and diorite. Commonly, jointing is not well-developed in the diorites and grandiorites. Where observed, it is moderately developed, and exhibits a variety of trends within relatively small areas. Simple massive and porphyritic dikes have been emplaced along joints and faults. Most are less than three feet wide, and not exposed for more than a few tens of feet. They generally follow the trend of the fault or joint. Several northeast-trending lineaments and cliffs occur on the property. Some of the cliffs along lineaments have zones of mylonitization. Nearly all of the cliffs face north- or northeast-ward. Most mylonite and shear zones dip steeply to the south, or are vertical. These zones tend to be a few feet wide. No evidence of direction of movement along these cliffs and lineaments is observed. The batholithic rocks do not exhibit signs of folding. The dioritic rocks rarely exhibit any alteration of note. Minor saussuritization of the plagioclase is common, as well as chloritization of biotite and hornblende. One outcrop of silicified diorite has been mapped. In the granodiorites, minor saussuritic alteration of plagioclase is prevalent. Only rarely is moderate saussuritization observed. Chloritization of mafic minerals is not common. In the vicinity of cliffs and shear zones, minor sericitization, silicification, hematization and pyritization may be observed. No well-defined alteration zones have been discovered in the recent property mapping (Noranda Exploration Co. Ltd., Assessment File F/3 NW I-4, p.1-13, Kenora Resident Geologist Office)
Feb 19, 2010 (C Ravnaas) - The property has potential for gold mineralization. Based upon similarity of lithology to the south of the mapped claims, two styles of gold mineralization are expected . One is a low-grade, high-tonnage type, in altered granodiorites centered over shear zones. The second consists of high-grade (visible gold) quartz ± carbonate veins, hosted in relatively unaltered granodiorites. Elevated pyrite contents are associated with both types of deposit. The quartz veins observed are most commonly emplaced within shear zones, and thus are also closely associated with porphyritic felsic dikes. Most veins do not exhibit any other minerals, while some display chlorite or sericite wisps. The veins generally measure one to a few inches wide. (Noranda Exploration Co. Ltd., Assessment File F/3 NW I-4, p.1-13, Kenora Resident Geologist Office)
File - Resident Geologist files AF 52F03NW H-2
Publication Number: Date: 1996
Author:
Publisher Name:
Location: Kenora RGP
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