Ontario Geological Survey
Permanent Link to this Record:
MDI000000000399
| Record Name(s) | Noramco NBW-88-05 - 1988 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2007-Oct-24 |
| Date Last Modified | 2022-Jun-08 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Silver
Township or Area: Setting Net Lake Area
Latitude: 52° 50' 30.68" Longitude: -93° 41' 59.82"
UTM Zone: 15 Easting: 452855 Northing: 5854908 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C13SE
Point Location Description: ddh database
Location Method: Data Compilation
1987-88: Geophysics, geological mapping and diamond drilling by Noramco.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.12095 | 53C13SE0010 | 53C13SE0010 |
Province: Superior
Subprovince: Berens River
Terrane: North Caribou
Domain: North Caribou Core
Geological Age: Neoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Granitoid-Unsubdivided | 1 | Granodiorite And Granite | Contains |
|---|---|---|---|---|
| Porphyry-unsubdivided | 2 | Contains | ||
| Intermediate Tuff | 3 | Tuff | Contains | |
| Gabbro | 4 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Bornite | Economic | Ore | ||||
| Silica | Alteration | Silicification | 1 | ||||
| Sericite | Alteration | Sericitization | 2 | ||||
| Magnetite | Alteration | 3 |
Oct 24, 2007 (Mark Puumala) - Chute (1988) indicates that Noramco diamond drill hole NBW-88-05 was advanced to test the intersection of two linear magnetic anomalies. The lithologies encountered in this borehole were dominated by felsic intrusives, with narrow intersections of intermediate tuff (possible xenolith) and gabbro also reported. The felsic intrusives consist of a complex series of porphyries, biotite granodiorite and granite. Quartz veining is reported to be common throughout the borehole, with a significant zone of shearing and quartz veining (20%) reported at the contact between silicified, sheared feldspar porphyry and aplitic, pegmatitic granite, at a borehole depth of 63.8 to 66.4 m (AF RL 53C/13SE # 48). Sulphide mineralization consisting of disseminated pyrite, pyrrhotite and chalcopyrite is reported by Chute (1988) to be common throughout the felsic intrusives. The most notable sulphide mineralization occurs between 29.0 to 29.2 m and consists of massive chalcopyrite with trace bornite. Chute (1988) also noted that granite pegmatite locally contained a yellow mineral that may represent a lithium, tungsten, rare earth or radioactive mineral. Abundant magnetite was also noted to occur in some of the granitic units. Pervasive propylitic alteration was noted in pegmatitic granites below 150 m, while porphyries were noted to commonly contain sericite (Chute 1988). Local silicification and minor chloritization and carbonatization were also noted in the felsic intrusives. The most notable assay values reported from this drill hole were 1.9% Cu and 1.3 oz/ton Ag over 0.5 m from the massive chalcopyrite zone (Chute 1988).
| Rank | Classification |
|---|---|
| 1 | Porphyry |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
Book - ddh log for NBW-88-05
Publication Number: AF RL53C13SE 48 Date:
Author: Noramco
Publisher Name:
Location: Red lake RGP
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