Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI52N04SE00057| Deposit Name(s) | Alcock Bug Lake - 1939 |
|---|---|
| Related Deposit Type | None |
| Deposit Status | discretionary occurrence |
| Date Created | 1991-Mar-21 |
| Date Last Modified | 2020-Aug-14 |
| Created By | Q Unknown |
| Revised By | T Pettigrew |
Primary Commodities: gold
Township or Area: Faulkenham Lake Area
Latitude: 50° 53' 30.1" Longitude: -93° 54' 4.79"
UTM Zone: 15 Easting: 436607 Northing: 5638168 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SE
Point Location Description: General
Location Method: conversion from mdi
Source Map: OGS 1975 P.1027 PAKWASH-LONGLEGGED L. SHEET
Sources Map Scale: 1:50 000
Access Description: This area is only accessible by helicopter or float plane
Late 1930s: C. Alcock carried out prospecting and sampling. 1946: C. Alcock carried out prospecting. 1976: Selco drilled 1 DDH. 2004: Grancru Resources Corp conducted HLEM and magnetic surveys. 2008: Precambrian Ventures carried out a soil sampling program. 2010: Precambrian Ventures carried out prospecting and soil and rock sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.46880 | 20000005977 | Open |
| 2.42254 | 20000000165 | Open |
| 2.30258 | 20000000543 | Open |
| 2.2187 | 52K13NW8937 | Open |
Province: Superior
Subprovince: Uchi
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| mafic to intermediate metavolcanics | 1 | |||
| metasedimentary | 2 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | pyrite | economic | ore | ||||
| 2 | stibnite | economic | ore |
08/14/2020 (T Pettigrew) - From an internal report by R. Thomson, Resident Geologist in 1946: “Prior to the war, Mr. Alcock did a little prospecting on the group and reports that he obtained assay returns of gold up to 0.23 oz. per ton in grab samples. On his return from overseas after the war he staked the presently held group of 8 claims. During June1946. he spent a few days prospecting but was unable to find the outcrop from which he had taken the samples giving the gold assay returns. Some altered mineralized rook in the probable vicinity was found. … Three mineralized places were. shown to the writer. At Locality "A" at the west end of the U-shaped lake plentiful angular boulders up to 4 feet by 3 feet by 2 feet of white hard siliceous altered rock with pyrite occur. The rock at this locality had the moat attractive appearance. A sample (RL-37) containing some 8 to 10% pyrite in disseminated grains usually less than 1/20 inch gave nil assay return in gold, as did also another (RL-38) sample taken some 20 feet from it. These boulders and a coarse sericitic schist mineralized with pyrite on the north edge of a swamp were the most likely places (in the writer’s opinion) for the occurrence of gold on the group and Alcock reports that he took the sample that gave the 0.23 oz assay return some half mile a little south of west of the boulders.” From brief notes in the RGP files about the 1946 visit by R. Thomson: “The rocks of the area area mostly granitic gneisses with dark inclusions and pegmatitic streaks. East of Bug lake, near a small alke and adjacent swamp are a number o fold pits, one of which is said to contain stibnite. Another, within 300 feet of the stibnite showing, was said to have contained a sample which assayed $8 in gold. These pits were not found and their location vague, but may be at the north side of the swamp. South of the swamp a gossan was noted on a hornblende gneiss and was caused by minor pyrite mineralization.”
08/14/2020 (S Lewis) - There is a high magnetic linear that trends west-east over this MDI location. The high magnetic linear is believed to be associated with intermediate to mafic metavolcanic rocks consisting of basaltic and andesitic flows, tuffs, and breccias and/or associated with metasedimentary rocks consisting of wackes, arenites, siltstone, argillites or sandstones. Work conducted by Precambrian Ventures in 2008 identified several elementary anomalies. A single, 600 times background Au response was located near this MDI location. There is a high contrast, sinuous linear, of As, with associated Ag, Sb that trends west-east over this MDI location.
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