Ontario Geological Survey
Permanent Link to this Record:
MDI31F04NE00003
| Record Name(s) | McWhirter Lake Sillimanite - 1950 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1984-May-29 |
| Date Last Modified | 2022-Feb-18 |
| Created By | |
| Revised By |
Primary Commodities: Sillimanite
Secondary Commodities: Garnet (Nonmetals)
Township or Area: Carlow
Latitude: 45° 12' 42.56" Longitude: -77° 41' 11.48"
UTM Zone: 18 Easting: 289042.996 Northing: 5009992.999 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F04NE
Point Location Description: approximate
Location Method: Data Compilation
Access Description: Accessed by Hwy 28, the McArthur's Mills-Boulter road, and a network of township roads and private logging roads. The site is located along the southeast shore of McWhirter Lake.
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Rhyolitic To Rhyodacitic | Gneissic | Host |
|---|
Jan 17, 2012 (A Wilson) - A wide band of metavolcanics containing sillimanite and garnet trends northeat along the east shore of McWhirter (Stony) Lake.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Sillimanite | Economic | Ore | ||||
| 2 | Garnet | Economic | Ore |
Jan 17, 2012 (A Wilson) - The sillimanite occurs as fine-grained fibrous radiating aggregates with garnet. Garnet and sillimanite occur sporadically over a width of ¼ mile in the unit. Some sillimanite rich zones up to 10 feet wide carry 15% sillimanite as fine needle-like aggregates. The sillimanite content varies greatly from unit to unit along strike.
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | 500 | 250 |
Book - NMI # 509105, 31F04 SILL 1
Publication Number: Scale: Date: 1996
Author:
Publisher Name:
Location:
Mono - Kyanite and sillimanite in Ontario
Publication Number: IMR004 Scale: Date: 1998
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Industrial minerals of the Pembroke-Renfrew area, part 2
Publication Number: MDC022 Scale: Date: 1981
Author: Storey C.C., Vos M.A.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Scale: Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
Map - Monteagle and Carlow townships, County of Hastings, Ontario
Publication Number: M1954-03 Scale: 1:31,680 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Bancroft Area
Publication Number: P3385 Scale: 1:50,000 Date: 1998
Author: Lumbers S.B., Vertolli V.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, industrial minerals of the Pembroke-Renfrew area, southern Ontario
Publication Number: P2209 Scale: 1:126,720 Date: 1980
Author: Vos M.A., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of Monteagle and Carlow townships
Publication Number: ARV63-06 Scale: Date: 1998
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office