Ontario Geological Survey
Permanent Link to this Record:
MDI31D15SE00080
| Record Name(s) | Bow West Shore - 1984 |
|---|---|
| Related Record Type | Simple |
| Record Status | Discretionary Occurrence |
| Date Created | 1993-May-19 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | A Wilson |
Primary Commodities: Tremolite
Township or Area: Snowdon
Latitude: 44° 50' 44.99" Longitude: -78° 33' 33.94"
UTM Zone: 17 Easting: 692870 Northing: 4968722 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D15SE
Point Location Description: Precise
Location Method: Data Compilation
Access Description: Just east of Bow Lake.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Bancroft
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Marble | 1 | Dolomitic | Host |
|---|
Jan 06, 2017 (A Wilson) - Sizable tremolite occurrences are present in the area, and are associated with the dolomite marbles northwest and west of Salerno Lake, and in the Denna Lake Structural Complex. The largest deposits are on Lots 20, 21 and 22, Concession 3, Snowdon Township, which extend onto Lots 22 and 23, Concession 4, Snowdon Township.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Tremolite | Economic | Ore |
Jan 06, 2017 (A Wilson) - The tremolite occurs as coarse-grained aggregates with 2 to 5 mm thick layers of coarse-grained quartz. Minor diopside is present, few other impurities are present in the marbles. Although quartz is a contaminant, its coarse grain size and presence as layers rather than as disseminated grains make removal of the quartz from the tremolite relatively easy. The tremolitic marbles on Lots 20 to 22, Concession 3 are found in association with possible algal-mat structures in the marbles (p. 59), and this may be a useful field indicator in the area for dolomitic marbles. Also, the deposits on Lots 20 to 22 are located on the south shore of Bow Lake, and are within 500 m of Highway 503. Tremolite also occurs in the Denna Lake Structural Complex.
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
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
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
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