Ontario Geological Survey
Permanent Link to this Record:
MDI52F04NE00014
| Record Name(s) | Trilake Road Cu-Zn Showing - 1993, Sandhill Lake - 1993 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2003-Nov-19 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Zinc
Secondary Commodities: Copper
Township or Area: Brooks Lake Area
Latitude: 49° 10' 56.8" Longitude: -93° 39' 5.8"
UTM Zone: 15 Easting: 452514 Northing: 5447942 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F04NE
Point Location Description: Location of sample 7256 in claim 1161620 in AFRI 52F04NE0018
Location Method: Based on Assessment
1993: M. Chute conducted prospecting, geological mapping, trenching and sampling. 1994: M. Chute conducted prospecting and geological mapping. 1995: M. Chute conducted prospecting, mapping, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.16995 | 52F04NE0018 | 52F04NE0018 |
| OP93-489 | 52F04NE0008 | 52F04NE0008 |
| 2.15513 | 52F04NE0003 | 52F04NE0003 |
Province: Superior
Subprovince: Wabigoon
Belt: Kakagi-Rowan Lakes
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Pillowed Basalts |
|---|---|---|---|---|
| Vein | 2 | Quartz-Carbonate |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Malachite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Limonite | Alteration | Carbonatization | 1 | Extreme | Massive | ||
| Hematite | Alteration | Hematization | 2 | Unknown | Disseminated | ||
| Silica | Alteration | Silicification | 3 | Unknown | Disseminated | ||
| Chlorite | Alteration | Chloritic | 4 | Unknown | Disseminated |
Oct 27, 2017 (C Ravnaas) - Grab samples from the Trilake Cu Zn showing returned up to 1.11 and 6.23 percent Zn and 2850 ppm Cu are reported in Chute assessment file 52F04NE Z2.
Oct 27, 2017 (Therese Pettigrew) - Prospector Chute found a Zn-Cu-rich outcrop on claim 1161620 that returned assays of 5410-62300 ppm Zn (0.54-6.2% Zn) and 1920-4860 ppm Cu (0.19-0.48% Cu) (AFRI 52F04NE0018). Intensely iron carbonated mafic pillowed flows of the Katimiagamak Group are in sheared contact with felsic tuffs of the South Kakagi Lake Formation. The altered assemblage is locally silicified. Very fine-grained disseminated pyrite occurs within the silicified iron carbonated zones which re developed in narrow zones of more intense shearing. These zones of shearing are accompanies by minor narrow quartz veins which postdate the silicification. Disseminated pyrite occurs as anhedral grains and clots of anhedral grains comprising generally 5% and locally up to 15% of the altered zones. Silicified iron carbonated mafic volcanics are anomalous in copper, zinc and arsenic. Values range from 71 to 2720 ppm Cu, 138 to 227 ppm Zn, and 14 to 289 ppm As. Massive amorphous limonite intruded by clear glassy quartz veinlets occurs as irregular beds within the zone. Assay values range from 25.7 to 2850 ppm Cu, 331 to 62300 ppm Zn, and 7 to 173 ppm As. Assay values for Cu, Zn, As and Au for iron carbonated and silicified mafic rocks spatially removed from the main showing area are generally lower than those at the main showing. This is attributed to the more intense alteration and shearing at the Trilake Cu-Zn showing. The altered zones are intruded by vertical quartz-iron carbonate veins in which the iron carbonate has largely been altered to limonite. No sulphides were observed. These veins are barren, with Au assays <1 ppb, and maximum assay values for Cu and Zn are 49.6 and 149 ppm respectively (AFRI 52F04NE0008).
Map - Schistose Lake, Kenora District
Publication Number: M2421 Scale: 1:31,680 Date: 1980
Author: Edwards G.R.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Schistose Lake area, District of Kenora
Publication Number: R194 Scale: Date: 1980
Author: Edwards G.R.
Publisher Name: Ontario Geological Survey
Location:
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