Ontario Geological Survey
Permanent Link to this Record:
MDI52A16NE00005
| Record Name(s) | Hughes Point Occurrence - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1997-Feb-27 |
| Date Last Modified | 2022-May-06 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Township or Area: Corrigal
Latitude: 48° 57' 31.39" Longitude: -88° 10' 39.12"
UTM Zone: 16 Easting: 413801.885 Northing: 5423534.916 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A16NE
Point Location Description: Small trench(es).
Location Method: Other Literature
Access Description: The Hughes Point occurrence is located on the west side of Hughes Point, approximately 10 km southeast of Nipigon. The Hughes Point occurrence is accessible by boat from the Nipigon Marina and launch site.
1990: The occurrence was discovered, staked and prospected by M. and J. Dampier. Minor trenching and sampling was conducted.
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The area is underlain by Mesoproterozoic Sibley Group metasedimentary rocks. Calcareous metasedimentary rocks have been intruded by diabase dikes and sills. The metamorphosed metasedimentary rocks consist of altered green limestone and purple mudstone. The occurrence comprises a number of narrow, mineralized calcite veinlets near the upper contact of a flat lying, diabase sill and shallowly southeast dipping marble. The marble is a contact metamorphic equivalent of the Sibley Group limestones that occur in the vicinity and commonly develops a green coloration in the contact aureole of the diabase intrusion. Narrow zones of epidote and magnetite are developed near the contact. The veinlets average 2 to 5 cm in width and strike between 53 degrees and 72 degrees, somewhat parallel to joint orientations in the diabase. They are mineralized with fine grained, disseminated covellite (after chalcocite?) and secondary malachite. The host metasedimentary rocks display a green colour and contain calcite, dolomite, epidote, fluorite, magnetite and possible sericite.
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Diabase | Near |
|---|---|---|---|---|
| Mudstone | 2 | Near | ||
| Limestone | 3 | Locally Meta. To Marble | Host | |
| Vein | 4 | Calcite | Host |
Dec 07, 2005 (B Nelson) - The marble is a contact metamorphic equivalent of the Sibley Group limestones that occur in the vicinity.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Covellite | Economic | Ore | ||||
| 2 | Malachite | Economic | Ore | ||||
| 1 | Calcite | Economic | Gangue | ||||
| 2 | Dolomite | Economic | Gangue | ||||
| 3 | Epidote | Economic | Gangue | ||||
| 4 | Fluorite | Economic | Gangue | ||||
| 5 | Magnetite | Economic | Gangue | ||||
| Calcite | Alteration | Hydrothermal | 1 | Veins | |||
| Malachite | Alteration | Supergene | 2 | ||||
| Dolomite | Alteration | Carbonatization | 3 | ||||
| Epidote | Alteration | Epidotization | 4 | ||||
| Fluorite | Alteration | Hydrothermal | 5 |
Dec 07, 2005 (B Nelson) - The veinlets are mineralized with fine grained, disseminated covellite (after chalcocite?) and secondary malachite. The host metasedimentary rocks display a green colour and contain calcite, dolomite, epidote, fluorite, magnetite and possible sericite.
Date: Feb 27, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the occurrence September 20, 1990.
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Location:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Red Rock-Pine Portage sheet, District of Thunder Bay, geological compilation series
Publication Number: P0357 Scale: 1:126,720 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Dimensional Stone Occurrences and Deposits in Northwest Ontario
Publication Number: OFR5890 Date: 1994
Author: Hinz P., Landry R.M., Gerow M.C.
Publisher Name: Ontario Geological Survey
Location:
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