Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI000000002343

Deposit: MDI000000002343

General

Mineral Deposit Identification
Deposit Name(s) Longrose - 1947, Undersill - 1988
Deposit Status occurrence
Date Created 2019-Sep-30
Date Last Modified 2019-Sep-30
Created By T Pettigrew
Revised By T Pettigrew

Commodities

Primary Commodities: gold

Location

Township or Area: Eva

Latitude: 49° 36' 46.88"    Longitude: -88° 3' 12.41"

UTM Zone: 16    Easting: 423899   Northing: 5496139    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 52H09SE

Point Location Description: DDH 14 from Assessment report 52H09SE0013

Location Method: data compilation

Exploration and Mining History

1947: Longrose Gold Mines Ltd. drilled 18 DDH totaling 1991.75 m. 1988: Mingold Resources Inc. carried out VLF-EM and magnetic surveys, till and rock sampling, geological mapping, and drilled 6 DDH totaling 655.9 m.

Assessment Work on File

Assessment Work on File
Office File Number   Online Assessment File Identifier   Online Assessment File Directory  
10     52H09SE0013     Open
2.12313     52H09SE0002     Open
13     52H09SE0004     Open

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-geraldton

Geological Age: Archean   

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
metasedimentary 1 greywacke host
ironstone 2 adjacent
vein 3 quartz host

Mineralization

Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 pyrite economic ore

Mineralization Comments

09/30/2019 (T Pettigrew) - DDH 14 assayed 0.30 opt Au over 1.5 feet (10.3 g/t Au over 0.45 m) from a greywacke mineralized with pyrite. DDH 1 assayed 0.05 opt Au over 0.5 feet (1.71 g/t Au over 0.15 m) from a quartz vein with specks of pyrite. DDH 17 assayed 0.04 opt Au over 3 feet (1.37 g/t Au over 0.9 m) from an iron formation with pyrite and magnetite, 0.04 opt Au over 2.2 feet (1.37 g/t Au over 0.67 m) from greywacke with quartz and pyrite, and 0.06 opt Au over 1 foot (2.06 g/t Au over 0.3 m). DDH 15 assayed 0.04 opt Au over 1.4 feet (1.37 g/t Au over 0.42 m) from a quartz vein with pyrite, and 0.14 opt Au over 49.6 feet (4.8 g/t Au over 15.1 m) from an altered greywacke (Assessment report 52H09SE0013). DDH UND-5 assayed 1.644 ppm Au over 0.5 feet from a quartz vein hosted by sheared clastic sediments (Assessment report 52H09SE0002)

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Ministry Contact Information

For detailed information regarding this mineral deposit please contact the Thunder Bay North Resident Geologist District Office