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Ontario Geological Survey
Permanent Link to this Record:
MDI31F04SE00151
| Record Name(s) | Hwy 28 Roadcuts - 2000 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1994-Jun-02 |
| Date Last Modified | 2022-Apr-13 |
| Created By | |
| Revised By |
Primary Commodities: Gypsum, Tremolite, Tourmaline
Township or Area: Dungannon
Latitude: 45° 4' 11.63" Longitude: -77° 43' 23.75"
UTM Zone: 18 Easting: 285626.419 Northing: 4994323.268 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F04SE
Point Location Description: Point 2.2 km W of Bowen Corner, lot 10, con 11.
Location Method: Conversion from MDI
Access Description: This is a series of road-cuts to be seen on Hwy 28 starting just E of the York River bridge, 11.1 km E of the junction of Hwy 28 (500) and Hwy 62. The second road-cut, at 11.9 km, is the location point.
Mineral location - various - in road-cuts.
Province: Grenville
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - Road-cuts show : at 11.1 km - rare brugnatellite nodules in marble, associated with brucite, clinohumite, spinel, serpentine, olivine, mica, pyrrhotite and graphite; at 11.9 km - tourmaline in pegmatite in amphibolite; at 12.2-12.4 km - aggregates of epidote in amphibolite with actinolite, pyroxene and hornblende; at 13.2 km - gypsum forms an encrustation on amphibolite; at 13.8 km - tremolite-actinolite crystals are abundant in calcite with some hematite. The Detlor Road junction is at 14.0 km. At 14.5-14.8 km - tremolite-actinolite occurs in marble; at 15.7-17.0 km - bladed aggregates of tremolite-actinolite are associated with smoky quartz, diopside and mica.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Tourmaline | Economic | Ore | ||||
| 2 | Gypsum | Economic | Ore | ||||
| 3 | Tremolite | Economic | Ore | ||||
| 4 | Actinolite | Economic | Ore | ||||
| 5 | Diopside | Economic | Ore | ||||
| 6 | Epidote | Economic | Ore | ||||
| 7 | Mica | Economic | Ore | ||||
| 8 | Hornblende | Economic | Ore | ||||
| 9 | Hematite | Economic | Ore |
Publication - Rocks and minerals for the collector: Bancroft - Parry Sound area and southern Ontario; Geological Survey of Canada, Miscellaneous Report 39
Publication Number: GSC Misc Rep 39 Page: 20 Date: 1996
Author: Sabina, A P
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/121046
Publication - New occurrences of minerals in parts of Ontario; Geological Survey of Canada, Paper no. 77-1A
Publication Number: GSC Paper 77-1A Page: 336 Date: 1977
Author: Sabina, A P
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102715
Publication - Catalogue of Canadian minerals; Geological Survey of Canada, Paper 80-18
Publication Number: Paper 80-18 Page: 74, 108 Date: 1980
Author: Traill, R J
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/119519
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office