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Ontario Geological Survey
Permanent Link to this Record:
MDI31D16NW00036
| Record Name(s) | Adam - 1979 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1981-Dec-09 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Nepheline Syenite
Township or Area: Monmouth, Monmouth
Latitude: 44° 53' 40.08" Longitude: -78° 18' 43.54"
UTM Zone: 17 Easting: 712237 Northing: 4974742 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D16NW
Point Location Description: General
Location Method: Data Compilation
Access Description: 0.65 km east of western boundary and 2 km north of southern boundary of township.
1979: Western Mines Ltd. – airborne geophysics. 1982: Gaslite Petroleum Ltd. – DD-48-11,139 ft.; geology, radiometrics, uranium geochemistry.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.3081 | 31D16NW0008 | 31D16NW0008 |
| 2.4757 | 31D16NW0004 | 31D16NW0004 |
| 2.40047 | 20000003944 | 20000003944 |
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Elzevir
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Nepheline | Contains |
|---|---|---|---|---|
| Marble | 2 | Adjacent | ||
| Gabbro | 3 | Metagabbro | Adjacent |
Feb 11, 2017 (A Wilson) - A small exposure of nepheline gneiss flanked by marble and metagabbro occurs on the southern side of the large Glamorgan-Monmouth metagabbro mass. The outcrops occur along a ridge about thirty feet high which is bounded on three sides by low swampy ground. Marble outcrops on the west side of the ridge and is overlain by a belt of nepheline gneiss approximately 800 feet long and 30 feet in outcrop width. Both nepheline gneiss and marble strike northerly and the prominently exposed contact between the two dips easterly at 40º-60º. The nepheline gneiss is well foliated near its contact with the marble but becomes progressively more massive toward the east until it is succeeded by metamorphosed essexite. This is followed eastward by a 300-foot-wide zone of garnet-epidote metapyroxenite, which is in turn followed by metagabbro. The undulant, fluted contact between marble and nepheline gneiss is well exposed on the west-facing slope of the ridge, but all other contacts are gradational. Nepheline syenite is also well exposed, presenting a number of different varieties on this same road, where it crosses lots 2 and 3, concession III of Monmouth. The varietal forms are all coarse in grain, and run in bands or streaks coinciding with the strike of the associated rocks, and usually also show a parallelism in the arrangement of the constituents.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Nepheline | Economic | Ore | ||||
| 2 | Andesine | Economic | Ore | ||||
| 3 | Garnet | Economic | Ore | ||||
| 4 | Scapolite | Economic | Ore |
Publication - Geology of the Haliburton and Bancroft areas, Province of Ontario; Geological Survey of Canada, Memoir no. 6
Publication Number: GSC Memoir 6 Page: 282 Date: 1910
Author: Adams, F D, Barlow, A E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100481
Part - Radioactive mineral occurrences in the Bancroft area
Publication Number: ARV65-06 Page: 53-54 Date: 1998
Author: Satterly J., Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of Glamorgan and Monmouth townships, Haliburton County
Publication Number: OFR5021 Page: 64-66 Date: 1997
Author: Armstrong H.S., Gittins J.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Page: 242 Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
Map - Monmouth Township, Haliburton County
Publication Number: M2174 Scale: 1:31,680 Date: 1970
Author: Armstrong H.S., Gittins J.
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