Ontario Geological Survey
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MDI31C06NW00013
| Record Name(s) | Johnston - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1981-Oct-14 |
| Date Last Modified | 2023-Jul-10 |
| Created By | |
| Revised By |
Primary Commodities: Fluorite, Barite
Secondary Commodities: Calcite
Township or Area: Huntingdon
Latitude: 44° 28' 5.22" Longitude: -77° 26' 26.06"
UTM Zone: 18 Easting: 305873.235 Northing: 4926764.811 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C06NW
Point Location Description: Shaft 'FL, BA' just West of property symbol 22 south of Moira Lake
Location Method: Conversion from MDI
Access Description: Drive 3.5 miles south of the main intersection in Madoc, Durham & St. Lawrence streets. Turn left/east on the Quin Mo Lac road, (1.75miles past Moira Lake), and drive 1.2 miles. A laneway on the south side of the road is marked by a low pile of debris. The old mine buildings can be seen from the road.
In 1943, R.T. Gilman found a vein on this property by diamond drilling and sank a shaft on it to 55 feet. It was known as the Johnston Mine and was operated by Fluoroc Mines Ltd. in the years 1944 to 1947 and by Reliance Fluorspar Mining Sydicate Ltd. in 1949. All mining was completed on the 55 foot level where drifting followed the vein for 280 feet. The shaft was deepened to 78 feet in 1949 and a concrete collar was poured to replace the original timbered shaft to bedrock.
Dec 07, 2005 (C Papertzian) - The vein strikes north west across the north half of the property. It is in line with the Noyes vein but is offset several 100 feet west of the Howard vein. Ordovician limestone is the country rock to a depth of 175 feet, and granite lies below. The drilling program carried out by the Canadian Government in 1943, outlined a vein up to 7 feet wide and averaging about 3 feet over an 800 foot length. the vein material consists of about 50 % of grey-green fluorite, 35% pink barite, and 15% white calcite. The three minerals are typically interbanded, and much of the banding is too fine to permit effective hand-cobbing.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Barite | Economic | Ore | ||||
| 2 | Calcite | Economic | Ore | ||||
| 3 | Fluorite | Economic | Ore |
Map - Madoc area, Ontario
Publication Number: M2053 Scale: 1:126,720 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geological notes for maps nos. 2053 and 2054, Madoc-Gananoque area
Publication Number: S012 Page: 20 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Fluorspar in Ontario
Publication Number: IMR012 Page: 22, 26, 33-35 Date: 1997
Author: Guillet G.R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of Madoc Township and the north part of Huntingdon Township, Hastings County
Publication Number: R073 Page: 19-20 Date: 1968
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Metallogeny of the Grenville Province, southeastern Ontario
Publication Number: OFR5515 Page: 158 Date: 1984
Author: Carter T.R.
Publisher Name: Ontario Geological Survey
Location:
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