Ontario Geological Survey
Permanent Link to this Record:
MDI31D15SE00036
| Record Name(s) | Birchbark Lake Graphite - 1987 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 1991-Jun-28 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | A Wilson |
Primary Commodities: Graphite
Township or Area: Snowdon
Latitude: 44° 49' 1.24" Longitude: -78° 33' 56.12"
UTM Zone: 17 Easting: 692479 Northing: 4965506 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D15SE
Point Location Description: graphite symbol south of Furnace Falls
Location Method: Data Compilation
Access Description: The locality is about 100 m west of a private road and about 500 m due south of Highway 503.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Calcite Marble | 1 | Massive | Host |
|---|---|---|---|---|
| Diorite | 2 | Diorite | Adjacent |
Jan 05, 2017 (A Wilson) - Graphite occurs as disseminated flakes accounting for 1% to 3% of the host rock in a crystalline marble that outcrops along a creek valley. That valley probably marks the trace of a fault through this area. The locality is about 100 m west of a private road that leads north from the Snowdon-Galway Township boundary road on Lot 17, Concession l, Snowdon Township.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Graphite | Economic | Ore |
Jan 05, 2017 (A Wilson) - Graphite occurs as flakes forming 1-3% of the host rock. The occurrence probably extends east and west along the fault trace. The occurrence is about 500 m due south of Highway 503. The marble is relatively pure, apart from the graphite. The occurrence probably extends east and west along the fault trace. This is a newly reported occurrence; further investigation is warranted.
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
MonoMap - Geology of the Howland area, Haliburton, Peterborough and Victoria counties
Publication Number: OFR5639 Scale: Date: 1987
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Map - Precambrian Geology, Minden Area
Publication Number: P3415 Scale: 1:50,000 Date: 2001
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Map - Geological series, Precambrian geology, Howland area, Haliburton, Peterborough, and Victoria counties
Publication Number: P2699 Scale: 1:15,840 Date: 1984
Author: Easton R.M., Bartlett J.R.
Publisher Name: Ontario Geological Survey
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