Ontario Geological Survey
Permanent Link to this Record:
MDI42A11SE00011
| Record Name(s) | Davidson-Tisdale - 1912, Davidson Mine - 1911 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1988-Mar-14 |
| Date Last Modified | 2022-May-18 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Silver
Township or Area: Tisdale
Latitude: 48° 30' 46.16" Longitude: -81° 13' 39.6"
UTM Zone: 17 Easting: 483186 Northing: 5373325.99 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A11SE
Point Location Description: shaft
Location Method: AMIS Site Visit
Access Description: Travel north on Crawford Street to Government Road curve and take road north 3 km to the site.
1909: gold discovered on property. 1911-24: Davidson Gold Mines Limited - DD-13-4070 m, 2 compartment shaft to 95 m with development on 3 levels; underground drilling. 1919: name change to Davidson Consolidated Mines Limited - in production. 1921: Porcupine Davidson Mines Limited - in production. 1924: property sold to Ventures Limited. 1933-45: Ventures Limited - DD-11-1557m. 1981: Dome Mines Ltd. - DD-10-1118 m. 1983-84: Davidson Tisdale Mines Ltd. - ground geophysics, stripping, trenching, DD-23-2125 m, shaft dewatering, underground sampling, underground mapping. 1984-87: Getty Canadian Metals Limited - DD-514-40532 m; underground rehabilitation; sampling, 2885 t bulk sample extracted (1985); 7270 t bulk sample taken in 1986-87. 1999-2003: Northcott Gold Ltd. - DD-17-1890 m. 2003-2010: VG Gold Corp. - DD-91-23123 m
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-0237 OM87-5L-98 / 63.5204 | 42A11SE0454 | 42A11SE0454 |
| T-0237 OM84-5JV-337 / 63.4734 | 42A11SE0455 | 42A11SE0455 |
| T-0237 OM86-5P-127 / 63.4901 | 42A11SE0910 | 42A11SE0910 |
| T-0237 OM86-5C-6 / 63.5153 | 42A11SE0458 | 42A11SE0458 |
| T-3014 / 63.4454/OM83-5C-376 | 42A11NW0405 | 42A11NW0405 |
| T-3014 / 63.4375 /OM83-5C-341 | 42A11SE0461 | 42A11SE0461 |
| T-3014 / 63.4376 / OM83-5C-342 | 42A11SE8841 | 42A11SE8841 |
| T-3014 | 42A11SE5064 | 42A11SE5064 |
| T-4336 / 2.19895 | 42A11SE2013 | 42A11SE2013 |
| T-5054 / 2.28678 | 42A11SE2035 | 42A11SE2035 |
| T-0237 | donation | donation |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Tisdale
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Pillowed And Massive | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz | Contains |
Jul 08, 2013 (A Wilson) - The property is underlain by a sequence of overturned easterly striking, northward dipping, pillowed and massive, magnesium tholeiitic volcanic flows of the Tisdale Group. In the southernmost part of the property there are outcrops of the distinctive V8 variolitic flows, underlain by a massive flow (“99”), which forms the basal member of the iron tholeiitic group. Minor graphitic sediments containing some pyrite and pyrrhotite have been noted locally on the property. Alteration on the property is widespread, consisting of a low-grade calcite-chlorite envelopeenclosing a higher-grade quartz-sericite-ferro dolomite or ankerite core. Alteration was not well documented in the drill logs database and has been recorded as somewhat patchy at the margins. The alteration is largely, if not entirely pre-faulting. The abundance of faults is one of the most prominent features of the Davidson Tisdale property. Three distinct fault sets have been identified from underground workings on the property. The faults are moderate to strong shear zones up to two metres in thickness. All known mineralized blocks lie within or very close to these faults. The “Main Fault” strikes 060º and dips 50º to the north. There is a set of faults, which generally parallel the main fault, but dip at 60º to 75º to the north. The second set of faults strikes 025º and dips northwest at 60º to 65º. These have been noted between fourth and fifth levels, representing a dilatant zone between two 060º structures. They contain prominent short veins, locally with gold mineralization. The third set trends 080º, dipping 30º to the north. These are limited to the east end of the workings and contain large “blow-outs” of quartz with erratic gold grains.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Gangue |
Jul 08, 2013 (A Wilson) - The major vein system in the Main Shaft area strikes at 030° with a 45° northwesterly dip rather than the 70°striking and 70° dipping structure as previously thought and which had guided previous exploration. The high gold grades associated with the Main Zone mineralization when the vein system is encountered. The term QVS or Quartz Vein System refers to zones of quartz mineralization hosted within the altered Mafic Volcanic. The QVS forms bodies of quartz containing assimilated host rock with pyrite and visible gold. The attitude of the QVS within an envelope striking 070 degrees and dipping to the north at approximately 70 degrees. The individual vein sets within this envelope can have various orientations, from steep to flat, and varying dimensions. Two types of quartz veins were identified on the property: type 1 - continuous tabular veins striking generally east-west and dipping 15º to 55º to the north, and type 2 -discontinuous, irregular, sub vertical and steep north dipping to shallow south dipping lenses of quartz stringers and veins, striking 40º to 70º azimuth. Examples of the type 1 veins are the “S” vein and the shallow vein stoped on the first level. They are gently undulating in strike and dip, vary in thickness from 0.5 to 7 metres, banded with seams of tourmaline, and mineralized with minor amounts of pyrite and chalcopyrite in areas of gold enrichment. Drifting and drilling to date indicate extensive barren veining with small high-grade pockets of native gold, the structural significance and predictability of which are unknown. Type 1 veins are uncommon in the drill hole database for the pit area. The type 2 vein quartz vein systems appear to be lenses of quartz veinlets and stringers which are oriented sub parallel to and separated by faults. These vein systems coalesce in places to form “blow-outs” of quartz breccia up to fifteen metres wide. These quartz veins often give way to shallowly south dipping auriferous quartz-filled tension gashes, which are abruptly terminated at faults. Most gold in the type 2 veins occurs near vein margins or xenoliths and is associated with patches of talc/muscovite and serpentine (often logged as chlorite), and a local increase in fine to coarse pyrite and chalcopyrite.
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Davidson-Tisdale | 2013 | Inferred Mineral Resource | 71000 | Ewart et al, p. 7 | 9600 contained ounces, cutoff 0.5+2.6 | Gold 4.20 Grams per Tonne |
| Davidson-Tisdale | 2013 | Indicated Mineral Resource | 214000 | Ewart et al, p. 7 | 20000 contained ounces, cutoff 0.5+2.6 | Gold 2.9 Grams per Tonne |
| Davidson-Tisdale | 2013 | Measured + Indicated Resource | 684000 | Ewart et al, p. 7 | 59300 contained ounces, cutoff 0.5+2.6 | Gold 2.7 Grams per Tonne |
| Davidson-Tisdale | 2013 | Measured Mineral Resource | 470000 | Ewart et al, p. 7 | 39300 contained ounces, cutoff 0.5+2.6 | Gold 2.6 Grams per Tonne |
| Davidson-Tisdale | 2007 | Unclassified | 374110 | Moran et al, p. 1.7 | 82250 contained ounces | Gold 0.220 Ounce per Ton |
| Davidson-Tisdale | 1996 | Unclassified | 544200 | OFR5990, table 10 | drill indicated; 600000 tons @ 0.255 oz/t Au. | Gold 7.9 Grams per Tonne |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1988 | 39772 |
Gold 7301 Ounces |
OFR5943, p. 245 | 43850 tons milled at 0.26 oz/ton |
| 1924 | 9521 |
Silver 150 Ounces Gold 2438 Ounces |
R058, p.81 | years 1918-20, 9371 tons grade gold 8.9 g/t |
Part - Mines of Ontario in 1924
Publication Number: ARV34-01.003 Date: 1997
Author: Sutherland T.F., McMillan J.G., Bartlett J., Cole G.E., Webster A.R.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Northern Miner 84-07-19, Davidson, p. A11
Publication Number: NMINER Date: 1984
Author:
Publisher Name: Northern Miner
Location: Timmins RGO
Book - Northern Miner 84-02-02
Publication Number: NMINER Date: 1984
Author:
Publisher Name: Northern Miner
Location: Timmins RGO
Book - Northern Miner 83-12-15, Davidson, p. A24
Publication Number: NMINER Date: 1983
Author:
Publisher Name: Northern Miner
Location: Timmins RGO
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Page: 94-95 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Book - Davidson Tisdale Project, 67p.
Publication Number: NI 43-101 Date: 2007
Author: R. Moran, K. Guy, R. Doran and P. Bevan
Publisher Name:
Location: Timmins RGO
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 257 Date: 1985
Author: Rose, D.G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Mono - Preliminary report on the Timmins-Kirkland Lake area, gold deposits file
Publication Number: OFR5467 Date: 1983
Author: Hodgson C.J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 1995, Resident Geologists
Publication Number: OFR5943 Page: 245, 264 Date: 1996
Author: Baker C.L., Fyon J.A., Laderoute D.G., Newsome J.W.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology and ore deposits of Tisdale Township, District of Cochrane
Publication Number: R058 Page: 78-82 Date: 1968
Author: Ferguson S.A., Buffam B.S.W., Carter O.F., Griffis A.T., Holmes T.C., Hurst M.E., Jones W.A., Lane H.C., Longley C.S.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Tisdale Township, Cochrane District
Publication Number: M2075 Scale: 1:12,000 Date: 1998
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Timmins data series, Tisdale Township, District of Cochrane
Publication Number: P2122 Scale: 1:15,840 Date: 1981
Author: MacRae B.A., Maharaj D.
Publisher Name: Ontario Geological Survey
Location:
Map - Structural geology, Tisdale Township
Publication Number: P3173 Scale: 1:10,000 Date: 1991
Author: Piroshco D.W., Kettles K.
Publisher Name: Ontario Geological Survey
Location:
Thesis - Relationship of hydrothermal alteration to structure and stratigraphy at the Coniaurum and Davidson Tisdale gold deposits, Tisdale Township, northeastern Ontario
Publication Number: MSc Thesis Page: 672 Date: 1985
Author: Piroscho, D.W.
Publisher Name: Queen's University
Location: Timmins RGO
Publication - NI 43-101 Technical Report and Updated Resource Estimate on the Buffalo Ankerite, Fuller, Paymaster and Davidson Tisdale Gold Deposits 278p.
Publication Number: 2013 NI 43-101 Date: 2013
Author: W. Ewart, E. Puritch, T. Armstrong, Y. Wu, A. Yassa, R. Routledge, K. Masu
Publisher Name:
Location: Timmins RGO
Publication - Canadian Mineral Deposits not Being Mined in 1989
Publication Number: MR 223 Page: ONT-297 Date: 1990
Author:
Publisher Name: Energy Mines and Resources Canada
Location: Timmins RGO
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office