Ontario Geological Survey
Permanent Link to this Record:
MDI31D15SE00119
| Record Name(s) | Hwy 503 Roadcut - 1984 |
|---|---|
| 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: Cobalt
Township or Area: Snowdon, Snowdon, Snowdon
Latitude: 44° 49' 38.07" Longitude: -78° 33' 31.07"
UTM Zone: 17 Easting: 692995 Northing: 4966659 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D15SE
Point Location Description: Precise
Location Method: Data Compilation
Access Description: On Highway 503, 1.2 km north of Birchbark Lake.
1984: Ontario Geological Survey – sampling, assays,
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Bancroft
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Gabbroid-Unsubdivided | 1 | Host |
|---|---|---|---|---|
| Marble | 2 | Contains |
Jan 06, 2017 (A Wilson) - All three occurrences are located on Highway 503, and occur as disseminated sulphides, or coatings of sulphides on joints and fractures in rusty-weathering diorite near the contact between diorite and the marble country rock. Sulphides may also be disseminated in the marbles near the diorites. The diorites at all three localities may be connected at depth as one large pluton.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore |
Jan 06, 2017 (A Wilson) - Assay values on samples collected by field party personnel are as follows: Lot 13, Concession 1: 2 samples of sulphides disseminated in diorite. Co 500 and 110 ppm; Cu 1500 and 470 ppm; Ni 210 and 30 ppm; Zn 140 and 194 ppm. Four other diorite samples containing sulphides gave the following assays: Co 100, 200, 100, and 200 ppm; Cu 2900, 600, 300 and 1200 ppm; Mo 100, 100, 100 and 40 ppm; Ni 100, 100, 100, and 300 ppm; and Zn 100, 100, 100, and 100 ppm. Lot 14, Concession 1: sample of rusty-weathering diorite. Pb 42 ppm; Sr 1055 ppm; V 140 ppm; Zn 250 ppm. A quartz vein and two marble samples at this site were not anomalous in metal values. Lot 15, Concession 1: sulphide as fracture coatings in diorite, visible chalcopyrite. Co 660 ppm; Cr 155 ppm; Cu 120 ppm. sulphide on fracture surface in diorite near contact with marbles. Cu 320 ppm; V 310 ppm. Zn 104 ppm.
| 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 - 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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