Ontario Geological Survey
Permanent Link to this Record:
MDI31D15SE00096
| Record Name(s) | Howland Mine - 1880 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1982-Jan-18 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Magnetite
Township or Area: Snowdon
Latitude: 44° 51' 56.04" Longitude: -78° 32' .82"
UTM Zone: 17 Easting: 694847.51 Northing: 4970976.22 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D15SE
Point Location Description: Precise
Location Method: Data Compilation
Access Description: Southeast of Irondale.
1880-2 2 shafts and open cut, 15 feet by 120 feet, from which 1,500 tons were shipped.
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Amphibolite | Host |
|---|---|---|---|---|
| Marble | 2 | Host |
Jan 11, 2017 (A Wilson) - Near Howland Sation on the Irondale, Bancroft and Ottawa railway are several outcrops of magnetite. The ore is on high ground overlooking the railway, and very conveniently situated for mining by tunnels run into the hillside. The deposit at the Howland mine, lot 26, lies at the contact of a hornblendic gneiss and a narrow band of limestone. The gneiss presents little banding, but the microscope• reveals the effects of considerable crushing. The feldspar is much shattered and altered to scapolite. This secondary scapolite and hornblende constitute nearly the entire rock. Some mica is present, and titanite is plentiful. At a distance of several hundred yards from the mine, augite becomes more abundant than hornblende, and the rock is gabbroic. The limestone is fine crystalline, and carries graphite, small scales of phlogopite, and bunches of silicates, chiefly hornblende. The ore is a fine-grained magnetite, quite pyritiferous near the surface, but becoming almost free from pyrite with depth.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Specularite | Economic | Ore | ||||
| 1 | Augite | Economic | Gangue | ||||
| 2 | Calcite | Economic | Gangue | ||||
| 3 | Hornblende | Economic | Gangue | ||||
| 4 | Scapolite | Economic | Gangue |
Jan 11, 2017 (A Wilson) - Magnetite with some pyrrhotite formed a zone 25 feet in diameter at the surface and larger with depth. Work was begun in 1880, and in 1881 and 1882 1,500 tons were shipped. Work was in progress in 1890, and a shaft 12 feet by 24 feet had been sunk to a depth of 75 feet. A body of ore was removed, 65 feet long and 35 feet wide, and extending from the 25 foot level to the 50 foot level, but no wall was encountered during its removal. Rose (1958) reports that the average ore grade was 58% Fe, 0.005% P2O5 and 0.06% S.
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1880 | 1500 | MDC011 |
Publication - Geology of the Haliburton and Bancroft areas, Province of Ontario; Geological Survey of Canada, Memoir no. 6
Publication Number: GSC Memoir 6 Page: 361 Date: 1910
Author: Adams, F D, Barlow, A E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100481
Part - Mineral occurrences in the Haliburton area
Publication Number: ARV52-02 Page: 46 Date: 1998
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Metallogeny of the Grenville Province, southeastern Ontario
Publication Number: OFR5515 Page: 96 Date: 1984
Author: Carter T.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report Of The Royal Commission On The Mineral Resources Of Ontario And Measures For Their Development
Publication Number: NSP011 Page: 131 Date: 1998
Author:
Publisher Name:
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 149 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
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
Location:
MonoMap - Geology of the Howland area, Haliburton, Peterborough and Victoria counties
Publication Number: OFR5639 Page: 89-90 Date: 1987
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
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