Ontario Geological Survey
Permanent Link to this Record:
MDI42E06SE00001
| Record Name(s) | Kamuck River Anthophyllite Occurrence - 1988, Williams Anthophyllite - 1988 |
|---|---|
| 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: Garnet (Nonmetals)
Township or Area: Kamuck River Area
Latitude: 49° 19' 49.99" Longitude: -87° 9' 55.01"
UTM Zone: 16 Easting: 487991.143 Northing: 5464215.984 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42E06SE
Point Location Description: Unknown
Location Method: Other Literature
Access Description: The Kamuck River Anthophyllite occurrence is located approximately 180 km northeast of Thunder Bay and 60 km north of Terrace Bay. Access is gained by travelling up the Kimberly Clark forest road for 46 miles (73.5 km). The occurrence is located on the Florrie Lake road, 5 km northeast of its junction with the Wintering road, approximately 70 km north of Terrace Bay and 7.5 km north of Chorus Lake.
1954: Dickison Lake area mapped by M. W. Bartley for the CPR. 1970: Dickison Lake area mapped by M. W Carter for the OGS. 1988: The anthophyllite occurrence was discovered by H. Williams while mapping the Quetico for the OGS (MP141). 1990-1991: The occurrence was staked by S. Parent. The property was optioned to Minnova Inc. who conducted line cutting, geological mapping, lithogeochemistry surveys, and DeepEM geophysical surveys.
Province: Superior
Subprovince: Quetico
Geological Age: Archean
Metamorphism Grade: Amphibolite
Dec 07, 2005 (B Nelson) - The occurrence is in the Quetico structural subprovince comprised of metasedimentary gneisses, migmatites, granitoids and amphibolite. The regional metamorphism is almandine amphibolite grade (Morrison and Jolin 1991). During the course of reconnaissance mapping in the Quetico Subprovince, Williams (1988) discovered anthophyllite and garnet rich rusty quartzites and mafic gneisses. The presence of anthophyllite was confirmed by X ray diffraction and refractive index analyses (Schnieders and Smyk 1990). Morrison and Jolin (1991) described the geology as: ...1000 meter wide, east northeast trending belt of metagreywacke which grades both to the north and south into migmatized equivalents. Within this belt is a concordant zone of anthophyllite garnet bearing amphibolite. Pegmatite veins and dykes are abundant throughout the property. The anthophyllite-garnet bearing amphibolite is conformable to the regional fabric (bedding) and can be traced for approximately 1.5 km reaching a thickness of 15 meters. Typically this unit features up to 80% coarse (1 2 cm) randomly oriented anthophyllite fans, stringer quartz veins, lesser biotite rich zones and minor garnet. The senior author (i.e. Schnieders, 1996) observed the anthophyllite garnet rich amphibolite which displayed a rusty gossanous appearance and contained up to 2% disseminated pyrite and pyrrhotite. The anthophyllite bearing unit strikes 84 degrees to 90 degrees and dips near vertically. Although the anthophyllite bearing unit returned anomalously low soda (1.5%) the alteration may represent a very distal situation not conducive to VMS (Morrison and Jolin 1991). Morrison and Jolin (1991) stated that 'geological mapping failed to identify a geological environment consistent with volcanogenic massive sulphide deposition. The stratigraphy is essentially sedimentary with no evidence for volcanism'.
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Mafic | Host |
|---|---|---|---|---|
| Sandstone | 2 | Quartzite | Host | |
| Pegmatite | 3 | Near | ||
| Amphibolite | 4 | Ay-Gt | Host | |
| Diatexite Migmatite | 5 | Near | ||
| Granitoid-Unsubdivided | 6 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Anthophyllite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Garnet | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Biotite | Economic | Gangue | ||||
| Biotite | Alteration | Biotitic | 1 | ||||
| Quartz | Alteration | Hydrothermal | 2 | Veins |
Dec 07, 2005 (B Nelson) - Five grab samples (90 BSP 01 to 05) collected by the Resident Geologist assayed low base metal values up to 210 ppm Cu and 335 ppm Zn. (Resident Geologist's Files, Schreiber Hemlo District, Thunder Bay).
Dec 07, 2005 (B Nelson) - Although the anthophyllite bearing unit returned anomalously low soda (1.5%) the alteration may represent a very distal situation not conducive to VMS (Morrison and Jolin 1991).
Date: Feb 27, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the occurrence June 27, 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 - Dickison Lake, Thunder Bay District
Publication Number: M2293 Scale: 1:63,360 Date: 1974
Author: Carter M.W.
Publisher Name: Ontario Division of Mines
Location:
Article - Schreiber-Hemlo Resident Geologist's District - 1990
Publication Number: MP152.007 Date: 1997
Author: Schnieders B.R., Smyk M.C., Hinz P.
Publisher Name: Ontario Geological Survey
Location:
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