Ontario Geological Survey
Permanent Link to this Record:
MDI000000001780
| Record Name(s) | Gem Property - 2007, Ruby Hill - 2007 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2014-Oct-20 |
| Date Last Modified | 2022-Feb-23 |
| Created By | |
| Revised By |
Primary Commodities: Zinc
Secondary Commodities: Nickel
Township or Area: Weaver Lake Area
Latitude: 49° 32' 20.42" Longitude: -90° 4' 2.64"
UTM Zone: 15 Easting: 712159 Northing: 5491510 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52G09SE
Point Location Description: Trench No. 2, Assessment report 20000003878
Location Method: Based on Assessment
Access Description: Access to the Gem property is obtained by travelling southwest approximately 22 km along Madden Road from Highway 811.
2007: Benton Resources Corp. carried out prospecting, trenching, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.40522 | 20000003878 | 20000003878 |
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 |
Dec 18, 2020 (Therese Pettigrew) - The majority of the Gem property is comprised of mafic to intermediate metavolcanic rocks predominantly basaltic and andesitic flows, tuffs and breccias (Assessment report 20000003878).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Sphalerite | Economic | Ore |
Dec 18, 2020 (Mark Puumala) - Rocks exposed on the Gem property by Benton Resources Corp. during a 2007 trenching and sampling program largely exposed fine- to medium-grained, massive to weakly-laminated mafic to intermediate metavolcanic rocks. These rocks typically display strong chlorite alteration and iron oxide staining. Mineralization consisted of fine-grained pyrite and chalcopyrite, with localized sphalerite also being observed, most notably in Trench No. 2 (Byrnes 2008 AFRI20000003878). The map for Trench No. 2 indicates that the zinc mineralization there is hosted by fine-grained felsic metavolcanic rocks. Grab samples collected by Benton Resources Corp. assayed up to 13% Zn, 1.4 g/t Au, 0.63% Ni and 0.64% Pb. The best channel sample results were 4.16% Zn over 1 m and 2.66% Zn over 2 m (Byrnes 2008).
| Rank | Classification |
|---|---|
| 1 | VMS Base Metal |
MonoMap - Precambrian Geology, Garden Lake Area
Publication Number: OFR6037 Scale: Date: 2000
Author: Hart T.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Garden-Obonga Lake Area High Density Lake Sediment and Water Geochemical Survey, Northwestern Ontario
Publication Number: OFR6009 Scale: Date: 2000
Author: Jackson J.E., Dyer R.D.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Garden Lake area, District of Thunder Bay
Publication Number: R025 Scale: Date: 1997
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
Data - Ontario Airborne Geophysical Surveys, Magnetic and Electromagnetic Data, Garden-Obonga Area
Publication Number: GDS1105 Scale: Date: 2000
Author: Ontario Geological Survey
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Garden Lake Greenstone Belt (West Half)
Publication Number: P3422 Scale: 1:20,000 Date: 2000
Author: Hart T.R.
Publisher Name: Ontario Geological Survey
Location:
Map - Garden Lake area, Thunder Bay District
Publication Number: M2058 Scale: 1:63,360 Date: 1997
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office