Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42H12SW00012

Record: MDI42H12SW00012

General

Commodities

Primary Commodities: Zinc, Silver, Gold

Secondary Commodities: Copper, Cobalt

Location

Township or Area: Hurdman

Latitude: 49° 30' 48.69"    Longitude: -81° 47' 3.02"

UTM Zone: 17    Easting: 443236   Northing: 5484840    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42H12SW

Point Location Description: Collar of drillhole ELO-07-02, per log UTM coordinates

Location Method: Based on Assessment

Access Description: The Hurdman Property is located approximately 120 kilometers north of the city of Timmins, in northeastern Ontario. The Property is accessible by travelling westward along Trans Canada Highway no. 11 from Smooth Rock Falls for a distance of 12 km then northward along a winter logging road for an additional 28 km. The first 20 km of the logging road would be useable year round by ATV but the last 8 km are strictly winter road, although skidder access should be possible in the summer. (Bérubé Technical Report, p. 6. See also OFR5996, p. 12)

Exploration History

1965-66: The International Nickel Company of Canada Limited - ground geophysics, DD-5-1666 ft.; 1979-1981: Mattagami Lake Exploration Limited - ground geophysics, drilling; 1988: McKinnon Prospecting - airborne geophysics; 1991: McKinnon Prospecting / Noront Resources Ltd. - airborne geophysics, ground geophysics, compilation, DD-4-455 m; 1992: McKinnon Prospecting / Galico Resources Inc. - DD-5-738 m; 1998: Baltic Resources Inc. - DD-4-560 m (no assays submitted); 2004-2009: Don Mc Holdings/Eloro Resources Limited - ground geophysics, DD-47-6809 m, airborne geophysics; 2012: Blue Vista Technologies Inc. - property acquisition

Assessment Work on File

Geology

Province: Superior

Subprovince: Quetico

Geological Age: Neoarchean  

Geology Comments

Jan 14, 2011 (D Draper) - The property is located at the eastern end of the structurally complex boundary between the Wawa subprovince and the metasedimentary-migmatitic Quetico subprovince. The area is also at the junction of the Kapuskasing NNE trending structural zone. Quetico metasedimentary rocks are migmatitic and have granulite facies assemblages. The available information for Hurdman Township indicates that much of the area is underlain by gneisses of sedimentary or volcanic-tuffaceous origin. Geological interpretation is hampered by the ubiquitous overburden cover, a general lack of previous work, and the very high degree of regional metamorphism. These limiting factors have completely destroyed the primary structures making units identification and stratigraphic correlations very difficult. (From Bérubé Technical Report, pp. 11-13)

Lithology

Lithology Comments

Jan 14, 2011 (D Draper) - The property lithology is predominantly quartz-feldspar-biotite gneisses, hornblende-biotite-quartz-feldspar gneisses, garnet-quartz-biotite-feldspar gneisses, and quartz-feldspar gneisses. Granodiorite, pegmatite, lit-par-lit gneisses and diabase dikes have been identified. Geological mapping carried out by Mattagami in 1979 found that gneissic foliation in Hurdman and Alexandra Townships varied from 45° and 120° in trend. Dips were found to vary from 30°-45° southwest. Indications of intense folding were noted. (From (Bérubé Technical Report, p.13)

Mineralization

Mineralization Comments

Jan 14, 2011 (D Draper) - The main zinc occurrence, termed the Hurdman Sulfide Zone (HSZ) by Eloro Resources, correlates with the G-H airborne anomaly defined by Mattagami and Noront. The sulphide envelope has a lens shape in section, strikes east northeast and dips north at 15 to 20 degrees conformably with biotite garnet gneisses. The zinc bearing zone can be followed 450m along strike, 85m down dip and over apparent widths varying from 0.5 to 20m. The zone is open to the west and east along strike. Mineralization consists of disseminated to massive pyrite-pyrrhotite bands sub-paralleling the main foliation. Zones of heavy pyrrhotite-pyrite mineralization are stacked with disseminated sulphides interbeds generally composed of pyrite and sphalerite in veinlets. Presence of blebby sphalerite was also noted in the massive sulphide bands (T-5895, p. 17). Chalcopyrite, galena and gahnite were also reported in various drill logs. Between 1980 and 2008, the sulphide zone was examined by over 8000m of drilling in more than 70 holes. Of these, 61 holes returned MDI-occurrence-grade values for zinc (assays up to 25.83% Zn), 25 holes for silver (assays up to 474.5 gpt Ag), and 39 holes for gold (assays up to 48.69 gpt Au). For the purposes of point location for the prospect, Eloro drillhole ELO-07-02 was selected as it was relatively central within the drill area and returned some of the best assays obtained: 8.24% Zn over 0.65m, 136.8 gpt Ag over 0.70m from biotite-sillimanite-quartz gneiss and 6.13 gpt Au, 104.40 gpt Ag over 0.45m of a lower unit of quartz-sillimanite gneiss. (For a table of assay results for drilling up to 1992, see OFR5996, pp. 38-42. For post-1992 drilling results see AF T-5633 and T-5895.) Other notable assay results: Mattagami hole H-1381-28, collared 240m SE of ELO-07-02, returned 3.78% Pb; hole H-1380-9, collared 330m SE of ELO-07-02 , returned 109ppm Co; hole H-1381-40, collared 105m ENE of ELO-07-02, returned 0.16% Cu. (T-1972) Of the holes drilled in the prospect area, core from 22 of them are on file in the Timmins Drill Core Library.

Jul 01, 2013 (A Wilson) - Mineralization in the Main HSZ consists dominantly of pyrrhotite and pyrite with associated sphalerite, and very minor galena and chalcopyrite. The sulphide minerals occur within a light grey coloured alteration halo that is associated with pegmatite sills and pyrrhotite-pyrite lodes. Sphalerite is typically brown, rather than the black that is indicative of high-iron, and it occurs as intergranular disseminations and patches intermingled with pyrite and pyrrhotite (and/or magnetite), mainly in rocks of the alteration halo but locally in the pegmatite. It overprints the deformation fabric (gneissosity) in the host rocks, just as the pegmatite and pyrrhotite-pyrite lodes do. Galena is rarely observed, consistent with low the lead values from assays but silver is anomalous (commonly > 10g/t), especially where zinc values exceed a percent. High silver in sphalerite has been reported elsewhere. Mineralization in the East HSZ is similar to that of the Main zone. Five Eloro holes intersected this zone and intersections of altered and/or mineralized rock range from 1 to 10 m in apparent thickness. The mineralization is predominantly sphalerite, with elevated silver, in altered host rocks that are associated with pegmatite sills and pyrrhotite-pyrite lodes.

Alteration Comments

Feb 05, 2016 (D Draper) - Alteration minerals such as sillimanite, anthophyllite, muscovite, tremolite, cordierite and gahnite were identified in holes drilled by Noront. The occurrence of gahnite (ZnAl2O4) indicates that sphalerite reacted with aluminosilicates under high metamorphic facies conditions. The host rock is typically sericitized, silicified and well banded throughout. Alteration minerals are most common in the sulphide horizon and footwall gneisses while the hanging wall is unaltered. Coarse garnet and intense sericite alteration are typical of the footwall gneisses.

Mineral Record Details

Mineral Zones - Size and Shape

References

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: 12  Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/129999

MonoMap - The Geology of Zinc-Rich Sulphide Mineralization in Metasedimentary Subprovinces: Examples from the Pontiac and Quetico Subprovinces, Northeastern Ontario

Publication Number: OFR5996 Page: 12-22, 37-45, 57-66  Date: 1999

Author: Parker J.R.

Publisher Name: Ontario Geological Survey

Location:

Publication - Technical Report: Hurdman Zinc - Silver Prospect, March 2005

Publication Number: Date: 2005

Author: J-P. Bérubé

Publisher Name: MRB & Associates for Eloro Resources Ltd

Location: Timmins RGO NI43-101 files

Map - Cochrane sheet, District of Cochrane, geological compilation series

Publication Number: P0372 Scale: 1:126,720    Date: 1997

Author: Bennett G., Brown D.D., George P.T.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Precambrian Geology, Hurdman Township Zinc Occurrence

Publication Number: P3363 Date: 1996

Author: Parker J.R., Laporte N.

Publisher Name: Ontario Geological Survey

Location:

Publication - 43-101 Technical Report on the Hurdman Zinc-Silver Deposit, Hurdman Township,Ontario, 57p

Publication Number: Date: 2011

Author: S.R. McCutcheon

Publisher Name:

Location: Timmins RGO

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