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Ontario Geological Survey
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MDI31C11SW00053
| Record Name(s) | Bridgewater Quarry - 2007, Finley - 1922 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Producing Mine |
| Date Created | 1990-Nov-26 |
| Date Last Modified | 2024-Apr-08 |
| Created By | |
| Revised By |
Primary Commodities: Trap Rock
Secondary Commodities: Talc, Soapstone
Township or Area: Elzevir
Latitude: 44° 34' 52.86" Longitude: -77° 21' 53.98"
UTM Zone: 18 Easting: 312249 Northing: 4939166 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C11SW
Point Location Description: Coordinates obtained using Claimaps.
Location Method: Other
Access Description: The entrance to the quarry is on the east side of Hastings County Road 20 (the Queensborough Road), about 4 km north of Highway 7 between Tweed and Madoc. The property consists of four leased mining claims in Concession III, lot 10, Elzevir Township.
1922-1923: Surface exploration for talc. 1981: James Byer completed 3 diamond drill holes totaling 106m. 1982: James Byer completed 2 diamond drill holes totaling 331m. 1986: C.R. Young and J. Byer completed surface exploration, and diamond drilling. An 81ha Mining Lease was issued. 1989: Several thousand tonnes of rock were quarried and tested with positive results in the production of rock wool. 2011: Danford Granite optioned the property and quarried 20,000 tonnes of low-magnesium gabbroic rock quarried for testing as concrete aggregate, railway ballast, and other uses. 2014-2018: Work began on a new area of high-magnesium gabbro to be tested for the production of rock wool. Blasting of 30 000 tonnes of the material was completed in February, 2015 and a 400 m diamond drill hole was proposed in order to test the consistency of chemistry across the width of the zone. The rock is crushed on-site. The company shipped 30 000 t of gabbro to Roxul Inc. in Milton for mineral wool manufacturing tests in 2015. The results were positive and the company has progressively increased shipments to 80 000 t in 2018.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Tweed file Elzevir #11 | 31C11SW0009 | 31C11SW0009 |
| Tweed file Elzevir #13 | 31C11SW0012 | 31C11SW0012 |
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Elzevir
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - A lenticular mass of soapstone, 120 x 160 ft was observed (by Finley) on lot 10. It has a ' peculiar pitted appearance on its weathered surface '. Soapstone also occurs on con 3, lot 11 (Queensboro Soapstone Occurrence).
Jan 22, 2016 (Scott Charbonneau) - The property lies within a belt of mafic metavolcanic and mafic to ultramafic intrusive rocks that trends northerly through parts of Elzevir, Madoc, Tudor, Grimsthorpe and Cashel townships and has been intruded by the Elzevir and Weslemkoon tonalite plutons. Within a zone up to 2 km wide along the western margins of the plutons, the mafic to ultramafic rocks are locally altered to various assemblages of talc, serpentine, anthophyllite, tremolite, chlorite and carbonate. To the west of this zone is a series of mafic metavolcanic, dark green to black, amphibole-rich rocks, locally diabasic to gabbroic-textured. The four major map units on the Bridgewater property within the mafic-ultramafic belt as defined by Verschuren (1982): Mafic metavolcanics and amphibolite: Massive coarse-grained hornblende amphibolite (unit 1) and Fe-rich hornblende gabbro and basalt (unit 2). Actinolite Schist: Mg-rich gabbro, actinolite-plagioclase rock (unit 3). Talc-serpentine-carbonate schist (unit 4). The Fe-rich unit and the high-Mg gabbro can be distinguished visually by the predominance of hornblende in the Fe-rich rock, giving a black colour and more massive, crystalline texture. The mafic phase of the Mg-rich gabbro is predominantly actinolite, giving the rock a slightly more fibrous texture, green tint and translucence on thin edges.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Granitoid-Unsubdivided | 2 | Is |
Jan 22, 2016 (Scott Charbonneau) - The primary geochemical difference between the Fe-rich unit and the high-Mg gabbro is the MgO and FeO content. Although both units contain about 48 to 50% silica, the Fe-rich unit contains about 16% FeO and 5% MgO; the high-Mg gabbro contains about 8% FeO and 10% MgO. The talcose zone, which lies between the Fe-and Mg-rich gabbro units, contains 30 to 35% MgO and about 30% silica.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Talc | Economic | Ore | ||||
| 2 | Serpentine | Economic | Ore | ||||
| 3 | Anthophyllite | Economic | Ore | ||||
| 4 | Tremolite | Economic | Ore | ||||
| 5 | Chlorite | Economic | Ore | ||||
| 6 | Carbonate | Economic | Ore |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
Date: Feb 05, 2015
Geologist: P LeBaron
Notes: An outcrop face at the site of the proposed test quarry area shows foliation striking 310 degrees and dipping 60 degrees southwest. Chloritic shear zones up to several centimetres wide occur sub-parallel to foliation. Bedrock exposed in trenches and in outcrop between the talcose zone and the Elzevir tonalite indicates the width of the high-Mg actinolite schist to be at least 250m. However, narrow, linear topographic lows that may represent more talcose units were observed.
Publication - Talc Deposits of Canada; Geological Survey of Canada, Economic Geology Series 2
Publication Number: Econ Geol 2 Page: 91 Date: 1926
Author: Wilson, M.E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102438
Map - Madoc, Hastings, Lennox and Addington Counties, Ontario
Publication Number: Map 559A Scale: 1:380,160 Date: 1940
Author: Wilson, M.E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/107445
Mono - Talc in southeastern Ontario
Publication Number: OFR5714 Page: 86, 88-90 Date: 1989
Author: LeBaron P.S., van Haaften S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Soapstone in Ontario
Publication Number: OFR5764 Page: 153 Date: 1991
Author: Gerow M.C., Sherlock E.J., Bellinger J.A.
Publisher Name: Ontario Geological Survey
Location:
Article - Geology of the Queensborough Road talc occurrence
Publication Number: MP106.010S Page: 96-96 Date: 1997
Author: Verschuren C.P.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Elzevir Area (South Half)
Publication Number: P3181 Scale: 1:20,000 Date: 2001
Author: DiPrisco G., Hammar D.J., Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
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