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Ontario Geological Survey
Permanent Link to this Record:
MDI52H09NE00021
| Record Name(s) | Nortoba-Tyson Prospect (No. 3 Vein) - 1936, A.E. Tyson - 1963, Amorda South - 1935, Amorda - 1935, Nortoba - 1958 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1991-Jan-21 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Molybdenum
Secondary Commodities: Copper, Gold
Township or Area: Dorothea
Latitude: 49° 41' 33.48" Longitude: -88° 2' 22.49"
UTM Zone: 16 Easting: 425023 Northing: 5504976 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52H09NE
Point Location Description: Location from Google Earth photo in Assessment report 20000014166
Location Method: Data Compilation
Access Description: The property is located in southeastern Dorothea Township. The property is accessible by bush roads via the 72 Road north of Highway 580.
1930-34: Springer-Sturgeon Gold Mines Ltd. held the West or Sellars Group. Brennan and Kenty Bros. Prospecting Co. Ltd. held the East or Brennan-Kenty Group. Mid-Canada Exploration Co. Ltd. optioned the Brennan-Kenty claims, which were later optioned by Kenbro Strugeon Gold Mines Ltd. 1935: Amorada Gold Mines Ltd. held 20 unsurveyed claims. Trenching and sampling were undertaken on gold and gold-molybdenite bearing quartz veins. 1936: Consolidated Mining and Smelting Co. of Canada Ltd. sampled the No. 3 or Molybdenite Vein. A total of 530 m of diamond drilling was done, tracing the No. 3 Vein to a depth of 115 m. A Mo-bearing quartz vein 23 m south of the No. 3 Vein was also drilled. 1958-59: Nortoba Nickel Explorations Ltd. Mines Ltd. performed geophysical surveys, trenching, stripping and diamond drilling. A gold-sulphide zone 15-21 m wide was located and traced for 120 m along strike. A 75-100 t/d mill was purchased and plans for a decline proposed. 1958: Nortoba Nickel was renamed to Nortoba Mines Ltd. 1960: Nortoba Mines disposed of their assets due to a funds shortage. 1962: Mead Mining Corp. Ltd. drilled 7 holes totalling 920 m. 1963-64: A.E. Tyson and W.T. Woods acquired the property and bulk sampled the No. 1 and 1A Veins, taking 147.5 tons of material from the veins. 1965: Candore Explorations Ltd. optioned the property and initiated a program of geological mapping, trenching, stripping and diamond drilling (17 holes, 1200 m) to investigate the Mo deposit. 1983: Stroud Res. Ltd. optioned the property and conducted a stripping, trenching, sampling and mapping program. 1971: Gunnex Ltd. carried out an exploration program consisting of linecutting, geological mapping, sampling, geochemical survey and a geophysical survey. 1986: Claims held by A.E. Tyson and Mrs. V.W. Tyson. 1993: The leases for the 14-claim Tyson property were surrendered to the Crown. 1994: The Tyson ground was staked by F. Houghton and N. Cox to cover all the Amorada-Nortoba-Tyson gold and molybdenite occurences (Veins 1, 1A, 2, 3 and 7). Prospecting, stripping and sampling were conducted. 2004: Roxmark Mines Ltd. acquired the property 2005: Roxmark drilled 24 DDH totalling 1865 m on the No. 3 vein. They also carried out trenching, sampling and geological mapping. 2006: Roxmark carried out bulk sampling. 2008: Roxmark carried out geological mapping, stripping, trenching and channel sampling. 2009: Roxmark Mines Ltd. and Ontex Resources combined to form Goldstone Resources. The Nortoba Tyson property was placed into a state of inactivity. Trenches at the moly occurrence were filled in with waste rock to grade. 2011: Premier Gold Mines Ltd. acquired Goldstone. 2012: Goldstone carried out additional rehabilitation.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 13 | 52H09NE0013 | 52H09NE0013 |
| 10 | 52H13NE1118 | 52H13NE1118 |
| 63.4059 | 52H09NE0015 | 52H09NE0015 |
| 2.1896 | 52H09NE0018 | 52H09NE0018 |
| 2.16514 | 52H09NE0008 | 52H09NE0008 |
| 2.52808 | 20000007396 | 20000007396 |
| 63A.520 | 52H09NE0020 | 52H09NE0020 |
| 63.2913 | 42E12NW0189 | 42E12NW0189 |
| 2.32476 | 20000013657 | 20000013657 |
| 2.57106 | 20000014166 | 20000014166 |
Province: Superior
Subprovince: Wabigoon
Belt: Beardmore-Geraldton
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The general geology consists of an east-trending sequence of metavolcanic rocks. The claim group is underlain by massive, pillowed, amygdaloidal and porphyritic mafic flow rocks and intermediate to felsic tuffs, tuff-breccia and flows. A fine to medium-grained quartz diorite lens intrudes the volcanic rocks. A major east-trending lineament occurs just north of the Tyson Mines property. Metavolcanics are strongly to weakly foliated 75 degrees to 95 degrees. Five main fissure-type quartz (+/- carbonate) veins occur and intrude all rock types on the property. The No.1, 1A, 2 and 7 Veins are auriferous; the No. 3 Vein is gold and molybdenum bearing. No.1 Vein: has been traced for 1200 feet, ranges in width from 7 to 31 inches and strikes N80 degrees W. Dip is vertical to steeply south. The vein appears to follow a fault along which a somewhat rusty shear zone has developed. The country rock is coarse-to-fine-grained andesite. No. 1A Vein: has been exposed for 60 feet with an average width of 15 inches, and parallels the No. 1. No. 2 Vein: Has been traced about 1600 feet, is 475 feet south of the No. 1 and parallel to it. In low ground toward the west end it consists of a rusty shear zone up to 40 inches in width and carrying numerous quartz stringers. Farther east the shear zone persists, but the quartz becomes more or less concentrated into a single vein with a maximum width of 13 inches. No. 7 Vein: located 250 feet south of the No. 2 and just south of the winter road. It consists of an irregular network of quartz stringers in a strongly carbonatized shear zone, which strikes east and has a maximum width of 12 feet. The immediate country rock is altered andesite, but a parallel dyke of quartz diorite occurs a few feet to the north. No. 3 Vein: constitutes the main molybdenite occurrence. The maximum concentration of vein material appears to be about 3 feet, but in places the vein splits into a number of parallel veins.
Feb 06, 2015 (Therese Pettigrew) - The property sits on the western portion of the Beardmore-Geraldton Belt and is underlain primarily by felsic, mafic and intermediate metavolcanic rocks.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Pillowed | Near |
|---|---|---|---|---|
| Intermediate Tuff | 2 | Tuffaceous | Near | |
| Felsic Tuff | 3 | Tuffaceous | Near | |
| Quartz Diorite | 4 | Quartz-Diorite | Near | |
| Mafic lava flow-unsubdivided | 5 | Porphyritic | Near | |
| Intermediate lava flow-unsubdivided | 6 | Andesite | Sheared | Host |
| Vein | 7 | Quartz | Host |
Dec 07, 2005 (B Nelson) - The metavolcanics are fine-grained, dark green to greyish-green and contain chlorite, sausserite, epidote, quartz, amphibole, pyroxene, calcite and magnetite. Metamorphic grade is greenschist facies.
Feb 06, 2015 (Therese Pettigrew) - The host rock for the No. 3 vein is a medium grey, fine-to medium-grained, light to moderately altered andesite volcanic rock. A few of the DDH cut molybdenite in shear fractures in dioritic rocks. DDH 18 intersected molybdenite mineralization in quartz veins and fractures to a depth of 313 m (Bevan, 2006 Qualifying Report).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Molybdenite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore | ||||
| 5 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Disseminated | ||
| Chlorite | Alteration | Chloritic | 2 | Unknown | Disseminated | ||
| Epidote | Alteration | Epidotization | 3 | Unknown | Disseminated | ||
| Carbonate | Alteration | Carbonatization | 4 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - No. 1 Vein: Visible gold was observed 'here and there' but the results of channel assaying are said to indicate only erratic gold values. No. 1A Vein: Reported to have yielded channel assays ranging from 0.05 to 1.60 oz/ton Au. Approximately 145 tons was mined from the 1 and 1A Veins, the bulk taken from the 1A Vein by means of an open cut. Polished specimen studies of the 1A Vein indicated the gold to be associated with pyrite. No. 2 Vein: Visible gold occurs in several places, but no ore sections have been delimited. A grab sample of well-pyritized quartz from a pit near the west end yielded 2.32 oz/ton Au. No 7 Vein: contains negligible quantities of gold. No. 3 Vein: Results up to 7.4% Mo have been attained. The material from the pit is 'rather spectacular and...of too high a mineral content to be assayed in an over-all assessment of this veins economic importance.' Pieces of quartz weighing 15-20 lbs carry solid molybdenite mineralization up to 10 inches and more in length and 6-8 inches in width.
Feb 06, 2015 (Therese Pettigrew) - The No. 3 vein is the main molybdenite occurrence, and it has been explored by trenches and test pits. The molybdenite occurs as large irregular patches in the quartz veins. The maximum concentration of vein material appears to be about 3 ft but in places the veins splits into a number of parallel veins extending over widths of up to 6 ft. the molybdenite occurs as thin films, irregular shaped flakes and compound flakes up to 1 inch in diameter in the fractured quartz, and as massive concentrations up to about 15% of the vein material. This vein has a strike of approx. N80E with near-vertical dips. The No. 3 vein has been traced on surface for 1300 ft and 2200 ft by drilling. Of the 12 trenches blasted out along the vein, 390 ft has an average width of 25.4 inches grading 2.42% MoS2, or 1.72% MoS2 over 3 ft. An en echelon structure appears to be present and the vein is broken into many short sections by a series of cross faults, the horizontal displacements are in most cases only a short distance (5-10 ft), with the greatest being about 25 ft. Other mineralization associated with the No. 3 vein is pyrite, chalcopyrite and pyrrhotite. The gold content is very low. The vein has been tested by diamond drilling to a depth of 380 ft. A second Mo-bearing quartz vein has been intersected by three DDH about 75 ft south of the No. 3 vein which appear to have similar grades and widths. Mo mineralization is not restricted solely to quartz veins: in 1958, DDH E-101 intersected 1.3 ft of fine-graned altered diorite containing approx. 2% molybdenite. The source of the molybdenite is probably due to the close association between sulphide mineralization and felsic intrusive rocks (granodiorite or probably diorite) in the Poplar Point Assemblage (Bevan, 2006 Qualifying Report). The 2008 surface exploration program returned assays as high as 1.68% Mo over 0.70 m (Roxmark Nov 13, 2008 press release).
| Rank | Classification |
|---|---|
| 1 | Hydrothermal |
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | 396 | .9 | 670 | 80 | 90 |
Date: Jan 31, 1997
Geologist: B Nelson
Notes: The Beardmore-Geraldton Economic Geologist visited the occurrence August 19, 1981 and August 10, 1983.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| No. 3 Vein | 1959 | Unclassified | 72000 | Qualifying Report on the Nortoba-Tyson Molybdenite and Gold Property, 2006 | Mining width of 3 ft; not NI 43-101 compliant | Molybdenum 2.0 Percent |
| No. 3 Vein | 1958 | Unclassified | 7500 | Qualifying Report on the Nortoba-Tyson Molybdenite and Gold Property, 2006 | To a depth of 40 ft; based on a strike length of 1,500 ft, widh of 1.5 ft to a depth of 40 ft, divided by a tonnage factor of 12; not NI 43-101 compliant | Molybdenum 1.5 Percent |
Map - Sturgeon River gold area, District of Thunder Bay, Ontario
Publication Number: ARM45A Scale: 1:63,360 Date: 1998
Author: Bruce E.L., Laird H.C.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Dorothea, Sandra and Irwin townships, Thunder Bay District
Publication Number: M2294 Scale: 1:31,680 Date: 1974
Author: Mackasey W.O.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of Dorothea, Sandra, and Irwin townships, District of Thunder Bay
Publication Number: R122 Date: 1975
Author: Mackasey W.O.
Publisher Name: Ontario Division of Mines
Location:
Article - 1981 report of the Thunder Bay Resident Geologist
Publication Number: MP101.004 Page: 62 Date: 1997
Author: McIlwaine W.H., Fenwick K.G., Scott J.F., Mason J.K., Schnieders B.R., Kristjansson F.J., Speed A.A., Bourdages H.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts
Publication Number: M2102 Date: 1997
Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.
Publisher Name: Ontario Dept. of Mines
Location:
Part - The western part of the Sturgeon River area (Sturgeon R.-Beardmore section)
Publication Number: ARV45-02.002 Page: 88-91 Date: 1998
Author: Laird H.C.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
Publication - Qualifying Report on the Nortoba-Tyson Molybdenite and Gold Property
Publication Number: Tech Rep Date: 2006
Author: Bevan, P.A.
Publisher Name: Prepared for Roxmark Mines Ltd.
Location: SEDAR
Map - Precambrian Geology of Dorothea and Sandra Townships, Beardmore Area, Northwestern Ontario
Publication Number: P3514 Scale: 1:20,000 Date: 2002
Author: Hart T.R., ter Meer M., Jolette C., Thibeault S., Robinson A.
Publisher Name: Ontario Geological Survey
Location:
Map - Dorothea Township, District of Thunder Bay
Publication Number: P0479 Scale: 1:15,840 Date: 1997
Author: Mackasey W.O.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Compilation series, Lake Nipigon sheet, District of Thunder Bay
Publication Number: P0257 Scale: 1:126,720 Date: 1984
Author: Stott G.M., McConnell C.D., Mason J.K.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology of the Wabigoon-Quetico subprovince boundary, Shakespeare Island sheet, Thunder Bay District
Publication Number: P2529 Scale: 1:50,000 Date: 1982
Author: Sutcliffe R.H.
Publisher Name: Ontario Geological Survey
Location:
Folio - Poplar Point area (Dorothea Township), District of Thunder Bay
Publication Number: GDIF186 Date: 1997
Author: Thunder Bay RGO
Publisher Name: Ontario Geological Survey
Location: Thunder Bay RGP
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