Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001484

Record: MDI000000001484

General

Commodities

Primary Commodities: Graphite

Secondary Commodities: Zinc, Copper

Location

Township or Area: Pitopiko River Area, Feagan Lake Area, Nagagami River Area

Latitude: 50° 1' 58.15"    Longitude: -84° 27' 3.27"

UTM Zone: 16    Easting: 682551   Northing: 5545393    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42F16NW

Point Location Description: centre of drilll hole cluster in T-6491

Location Method: Based on Assessment

Access Description: Access to most of the 4F claim block can be gained using helicopter, but boat or canoe access can be used along the Nagagami River in the central area of the claim block. Old forestry logging roads reach the south-east boundary of the claim block, leading to several old quad trails through previously harvested forests just east of the Nagagami River.

Exploration History

2010: Zenyatta Ventures Ltd.. - airborne geophysics. 2011-2014: Zenyatta Ventures Ltd. - DD-63-26,011 m, geochemistry, petrography, ground geophysics, down hole geophysics, 2-100 kg samples sent for metallurgical testing, resource calculation. East Pipe sampling 5,546.8 kg of core, West Pipe sampling 4,623.4 kg of core for concentrate testing, airborne geophysics

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Marmion

Geological Age: Archean  

Lithology

Lithology Comments

Aug 21, 2015 (A Wilson) - Precambrian rocks in the southern section of Claim Block 4F primarily comprise paragneissitic and migmatitic metasedimentary rocks, and mafic rocks together with related intrusive rocks of the Quetico Subprovince. The northern section of Claim Block 4F is underlain by metamorphosed tonalite to granodiorite, foliated to gneissic with minor supracrustal inclusions of the Marmion Terrane/Subprovince. Both subprovinces have been intruded with a younger alkalic intrusive suite made up of alkalic syenite, ijolite, and associated mafic and ultramafic rocks and carbonatite. Precambrian basement rocks are overlain with Paleozoic limestone, and drilling on the property by Zenyatta suggests that thicknesses can range from one to greater than fifteen metres. The Albany graphite deposit is hosted within gneissic to unfoliated syenite, granite, diorite, and monzonite (Albany Alkalic Complex) that are cross-cut by younger dykes, ranging from felsic to mafic in composition. The basement rocks are overprinted by graphite near the margins of the graphite breccia pipes. Eight separate and extensive brecciated zones have been intersected in granite gneiss. Graphite rich clasts are observed within a wide zone of graphitic breccia. Drilling information indicates widespread "vein type" (or hydrothermal) graphite mineralization consisting of clasts of graphite vein material, disseminated graphite matrix and discrete graphite veins, veinlets and hairline veins. The stockwork graphitic veins can be several centimetres wide, while the veinlets and hairlines are millimetre and submillimetre scale. The "vein type" graphite deposit is possibly related to the emplacement of a carbonatite intrusion.

Mineralization

Mineralization Comments

Aug 21, 2015 (A Wilson) - Assays from DDH Z114F1 returned values ranging from 2.1%C over 7.5 m (481-488.5 m) to 4.6% C over 9.9 m (79.8-89.7 m). A 47.8 m section of drill hole Z12-4F3 assayed 3.3% C; and a second zone in the same drill hole averaged assays of 3.8% C over 132m (133-265 m) with sections grading as much as 11.4% C. Drill hole Z12-4F5 intersected two graphite zones, the upper zone assayed 6.5% C over 88.0 m and the lower graphite zone assayed 7.7%C over 76.0 m. Individual samples assayed as high as 13.1% C. The flake graphite ranges from 50 to >300 microns in size. It has been characterized as a magmatic hydrothermal style of mineralization. The results of the 2012 drilling were very positive as drilling intersected several zones of medium to high grade graphite (C). Some of the best results include the following mineralized zones (weighted averages): 3.8% C over 131.5 metres in DDH Z12-4F3; 6.6% C over 170.1 metres in DDH Z12-4F5; and 5.6% C over 138.5 metres in DDH Z12-4F9. Individual samples assayed as high as 19.3 %C, 16.25 %C, 15.3 %C and 14.15 %C in drillhole Z12-4F9; also, 13.65 %C and 11.15 %C in drillhole Z12-4F5. Graphite occurs both in the matrix, as disseminated crystals, clotted to radiating crystal aggregates and veins and along crystal boundaries, and as small veins within the breccia fragments. In addition to graphite, the matrix consists primarily of quartz, alkali feldspar, and plagioclase feldspar with minor phlogopite and amphibole and trace amounts of pyrite-pyrrhotite and magnetite. The stockwork graphitic veins can be several centimetres wide while the veinlets and hairline fractures are millimetre and submillimetre scale. Breccia fragments are dominantly massive to weakly foliated syenite (>95%) with minor to trace chlorite-biotite-rich schist fragments, and mafic to intermediate dyke fragments. Occasional solid graphite fragments and rare altered fragments of unknown origin were also observed. Syenite breccia fragments are angular to subangular to subrounded and range in size from subcentimetre to approximately one metre, most being between three centimetres and 30 cm. Dyke and graphite fragments range from one centimetre to five centimetres. Overall, the best core sample assay was a slightly anomalous value of 1040ppm Zn (0.10%) for sample #N551690 from DDH Z13-4F58. The best copper (Cu) values in core samples were weakly anomalous (442ppm and 429ppm Cu) in DDH Z13-4F59. There were no elevated gold or silver (Au or Ag) values in the assay results. Zenyatta geologists did not observe any graphite mineralization during logging of the core and therefore did not assay for graphite (C) in either of the two holes. These disappointing results do not justify any further exploration in either of these claim areas.

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Jan 16, 2014

Geologist: A Wilson

Notes: The Albany graphite deposit comprises two separate pipes, West and East. The West Pipe consists of a single mineralized zone, which encompasses graphitic breccia and some lower grade graphitic overprint in some marginal areas. The East Pipe consists of two mineralized zones: graphitic breccia and a low grade halo. The West Pipe is a graphitic breccia pipe intersected by 29 drill holes. It occurs as a steep sided, inverted cone, narrowing with depth. It is elliptical, but somewhat irregular, in plan, elongated in a north-northeast direction. Dimensions are somewhat variable, ranging from 175 m at its widest, to less than 68 m at its base. Where the pipe is capped by Paleozoic limestone it is 160 m wide by 350 m long and the pipe is modelled to a depth of approximately 525 m below surface. The West Pipe is a graphitic breccia pipe intersected by 29 drill holes. It occurs as a steep sided, inverted cone, narrowing with depth. It is elliptical, but somewhat irregular, in plan, elongated in a north-northeast direction. Dimensions are somewhat variable, ranging from 175 m at its widest, to less than 68 m at its base. Where the pipe is capped by Paleozoic limestone it is 160 m wide by 350 m long and the pipe is modelled to a depth of approximately 525 m below surface. The West Pipe is cut by a late stage barren sill at a depth of approximately 200 m. The sill ranges from 40 m to nearly 65 m in thickness. In addition, two large blocks of unmineralized waste material occur within the West Pipe. In the southern part of the pipe apex, a large slab of syenite (65 m in length by 40 m in thickness, has been intersected by several drill holes, and just above the barren sill another large block of internal waste has been modelled (approximately 110 m x 60 m x 90 m). At surface, the East Pipe, including the graphitic breccia and overprinted syenite, has an average width of approximately 80 m and reaches widths of up to 150 m. On its own, the low grade halo (above the barren sills) ranges in thickness from 30 m to 60 m and it is thicker on the eastern side of the pipe. Beneath the barren sills, there only remains a thin skin of overprinted syenite on the western side of the pipe, averaging about five metres in thickness.

References

Map - Pagwa River-Calstock sheet, districts of Cochrane and Algoma, geological compilation series

Publication Number: P0552 Scale: 1:126,720    Date: 1997

Author: Innes D.G.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Caramat-Pagwa River sheet, geological compilation series, Algoma, Cochrane and Thunder Bay districts

Publication Number: M2202 Scale: 1:253,440    Date: 1971

Author: Innes D.G., Ayres L.D.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Map - Precambrian Geology of the Hudson Bay and James Bay Lowlands Region Interpreted from Aeromagnetic Data-South Sheet

Publication Number: P3599-REV Scale: 1:500,000    Date: 2009

Author: Stott G.M.

Publisher Name: Ontario Geological Survey

Location:

Publication - Zenyatta Ventures Ltd. – press releases

Publication Number: Date: 2011

Author:

Publisher Name:

Location: Timmins RGO

Publication - Technical Report on the Albany Graphite deposit, 113 p.

Publication Number: NI 43-101 Date: 2014

Author: D. Ross and K.M. Masun

Publisher Name:

Location: Timmins RGO

Publication - Technical Report on the Preliminary Economic Assessment of the Albany Graphite Project, Northern Ontario, Canada 224 p.

Publication Number: NI 43-101 Date: 2015

Author: J. J. Cox, D. Ross, K.M. Masun, M. Lavigne, B.J.Y. Scholey, D. Chubb

Publisher Name:

Location: Timmins RGO

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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office