Ontario Geological Survey
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MDI31M05SE00151
| Record Name(s) | Shamrock Silver Co. Ltd. - 1907, Shamrock Consolidated Mines Ltd. - 1915, Bursary Silver Mines Ltd. - 1968, Silver -Miller Mines Ltd. - 1968 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1980-Nov-05 |
| Date Last Modified | 2023-Aug-23 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt, Silver
Township or Area: Coleman
Latitude: 47° 21' 51.7" Longitude: -79° 38' 24.28"
UTM Zone: 17 Easting: 602683 Northing: 5246552 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SE
Point Location Description: Shamrock Shaft
Location Method: AMIS Site Visit
1905-1907: Silver Hill Mining Co. Ltd. - Surface prospecting. 1908-1913: La Rose Consolidated Mines Ltd. – further surface prospecting. 1952: Silver Miller Mines Ltd. – DD-1-707 ft.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Greywacke | Host |
|---|---|---|---|---|
| Granite | 2 | Granite | Intrudes | |
| Vein | 3 | Quartz | Intrudes |
Jul 26, 2017 (A Wilson) - Nipissing diabase outcrops over most the claim; the top contact dips easterly under Keewatin rock. There is no doubt that the steep easterly roll of this contact, occurring in the Beaver claim, continues northerly through the Shamrock but information on the underground position of the contact is not available. The diabase west of the contact is fine-grained suggesting that the rectilinear northerly-striking contact is due to a roll rather than a post-diabase fault. On the 102-foot level the Keewatin-Nipissing contact is reported to lie 129 feet west of the shaft. The 400-foot level is reported to be 40 feet below the contact. That the Beaver dike, which on the Beaver claim intrudes Keewatin rock and lies parallel with and adjacent to the roll in the Nipissing contact, continues northerly into the Shamrock claim is indicated by the presence of pieces of lithologically similar rock on the dump of the pit about 600 feet due north of the Shamrock shaft; probably the dike is not continuous over all this distance. The writer has no record of production from this property but there is no doubt that a little silver was obtained. A small amount of stoping is reported to have been done about The Beaver fault strikes into the claim and possibly the working on the 200-foot level extending 220 feet northwesterly from a point about 50 feet west of the shaft is along it.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 2 | Galena | Economic | Ore | ||||
| 3 | Silver | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore |
Jul 26, 2017 (A Wilson) - In addition to silver and cobalt, galena is reported to occur in sufficient quantity to have been bagged up for shipment. At least two veins were explored by the underground workings. These strike a little north of east and dip steeply west. The projection of these veins to surface is shown on Map P.96; actual exposure is concealed by dump and overburden. The position and strike of the veins suggest that they are an extension of the Temiskaming-Beaver group of veins. A stope on the third level some 160 feet north and 50 feet west of the Main shaft, with strike N.10 ºE., length 50 feet and content 8,146 cubic feet is shown on an old company plan. This is the most important ore occurrence on the property. At about 140 feet S. and 70 feet W. of the above shaft, another stope is indicated, possibly on the same vein as the above. Probably a vein striking N.25ºE. that extends through the pit about 600 feet north of the Main shaft but the relationships are obscured by caving.
File - Resident Geologist file CO-0771
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Map - Cobalt silver area, southeastern sheet, Timiskaming District
Publication Number: M2052 Scale: 1:12,000 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 232-233, 239 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Preliminary report on parts of Coleman Township, concession 4, lots 1 to 5, and Gillies Limit, the eastern "A" claims, District of Timiskaming
Publication Number: PR1961-06 Page: 23-25 Date: 1998
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
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