Ontario Geological Survey
Permanent Link to this Record:
MDI52A04NE00005
Record Name(s) | Henrietta - 1885 |
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Related Record Type | Partial |
Related Record(s) | |
Record Status | Discretionary Occurrence |
Date Created | 1991-Mar-05 |
Date Last Modified | 2022-Mar-04 |
Created By | |
Revised By |
Primary Commodities: Silver, Calcite
Secondary Commodities: Fluorite
Township or Area: Pearson
Latitude: 48° 12' 31.62" Longitude: -89° 40' 47.91"
UTM Zone: 16 Easting: 300902 Northing: 5342979 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A04NE
Point Location Description: AMIS shaft location
Location Method: Conversion from MDI
1885-87: a shaft 15.2 m deep was sunk.
Province: Southern
Formation Group: Animikie Group
Geological Age: Paleoproterozoic
Rock Type | Rank | Composition | Texture | Relationship | Sandy Mudstone | 1 | Shale And Greywacke |
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Diabase | 2 | Diabase Sill | ||
Vein | 3 | Host |
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
---|---|---|---|---|---|---|---|
1 | Calcite | Economic | Ore | ||||
2 | Fluorite | Economic | Ore | ||||
3 | Pyrite | Economic | Ore |
Mar 01, 2018 (Therese Pettigrew) - The vein occupies a fault that traverses flat-lying Animikie shaes and grewacke, and a diabase sill some 15 m or more thick. The rocks on the south side of the vein has been down-faulted about 12.2 m, and Animikie sediments above the sill are exposed on the south wall of the vein. The north wall of the vein at the shaft consists of diabase that stands up as a prominent mesa, bounded by cliffs approximately 9 m high. The shaft is on the SE extremity of this mesa. The vein strikes 65 degrees east, and dips vertically or steeply toward the north. The vein material occupies a width of about 0.75 m within a shatter zone 1.8 m wide, and is in the form of 3 veins, each 20 cm or more wide and which unite and divide below the surface. The vein material consists of coarsely crystalline calcite, a small portion of which is clear and transparent, through which pyrite is sparsely disseminated. Silver ore is not known to have been found here (Tanton, 1931).
Rank | Classification |
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1 | Vein |
Rank | Characteristic |
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1 | Vein |
Publication - Fort William and Port Arthur, and Thunder Cape Map-area, Thunder Bay District, Ontario; Geological Survey of Canada, Memoir 167
Publication Number: GSC Memoir 167 Scale: Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
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