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Permanent Link to this Record: MDI42A08NW00154

Record: MDI42A08NW00154

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Molybdenum

Location

Township or Area: Hislop

Latitude: 48° 29' 40.3"    Longitude: -80° 17' 12.52"

UTM Zone: 17    Easting: 552690   Northing: 5371513    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A08NW

Point Location Description: Shaft, located 4.88 km N and 0.86 km W of the SE corner of Hislop Township.

Location Method: AMIS Site Visit

Access Description: The Kelrowe Gold Mines/Kelwren Gold Mines/Kelore Mines/New Kelore Mines exploration shaft is about 14.5 km southeast of Matheson and about 2.7 km north of the village of Holtyre within patented claim no. 26903 (the southwest quarter of the south half of lot 1, concession IV, Hislop Township). Access to the shaft area is provided from the east from Highway 572 via a 1 km long gravel road and from the west via a 1.8 km long dirt road from north trending Hislop Township Road 2.

Exploration History

1933:Ground on which the Bush occurrence was eventually discovered was staked by V. Bush of Kirkland Lake. 1934-36: Vein material blasted and sampled. McIntyre Porcupine Mines Ltd. stripped overburden and diamond drilled 45 holes totalling about 13,000 feet on two gold occurrences in the area. 1938: Torovic Gold Mines Ltd. completed surface exploration including the diamond drilling of 4,914 feet in the area. 1939: Kelrowe Gold Mines Ltd. sunk a vertical 3 compartment exploration shaft 182 feet, established the 80 foot level, and crosscut 10 feet. 1940: Kelrowe Gold Mines deepened their exploration shaft to a depth of 319 feet, established levels at depths of 180 and 300 feet, drifted 654 feet, crosscut 363 feet, raised 11 feet, and diamond drilled from underground 40 holes totalling 4,914 feet. 1946-47: Kelwren Gold Mines diam.drilled from surf. 34 holes in totall. In 1947, Kelwren Gold Mines deepened the expl. shaft 155' to the 475' level, establ. the 450' level, drifted 478' and crosscut 229' on the 300 and 450' lev., diamond drilled from surf. 5 holes total. 3,443' surf. diam.drilling compl. and diam.drilled from underground. 1948-1950: Kelore Mines Ltd. drifted 2,218', crosscut 710', raised 196', and diam.drilled from ug 122 holes total-12,623'. 1973: Hollinger Mines dewatered the refurbished shaft, compl. surf. and ug geological mapping, compl. mag and HLEM EM SURV., installed a new surf. plant and 40' timber headframe, and diam. drilled from surf. 11 holes. 1974: Hollinger Mines erected a new headframe, sampled drifts on the 180, 300, and 450' lev., and diam.drilled 28,000' from ug. 1975-1976: By yr. end 1975, Hollinger Mines had diam.drilled 250 holes Hollinger Mines began a 6,100' long haulageway from the Ross Mine to the New Kelore workings, but this was halted after 400-500' 1986: Kelore Mines compl. MAG and VLF EM SURV., surf. diam.drilling. 1987: Goldpost Res. diam.drilled from surf. 156 holes in the area. 1988: Goldpost Res. collared 2 expl. decline ramps. Underground diamond drilling (2 holes totalling 514 feet in East Decline and 42 holes totalling 11 859 feet in Main Decline). 1990-1991: Joint venture with St Andrew Goldfields Ltd. to mine parts of the shaft zone and north zone.1993: Dewatering and resumption of mining. 1994: 777 feet of development, diamond drilling totalling 65 holes and 5064 feet. 1999-2000: Production from the west pit. The pit is located approximately 553350E 5371725N. 2005-2006: Northeast side of the west pit was extended. 2009: Diamond drilling program to bring resources to the southwest of the west pit to NI 43-101 standards. 2010: Production from a new pit to the southeast of the west pit commenced. The pit is located approximately 552400E 5371575N. 2014: Pit exhausted. Stockpiled ore still shipped to Holt Mill. Reserves and resources are for underground. 2014: St. Andrew GoldfieldsLtd. DD-20-5100 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Blake River

Geological Age: Archean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Apr 07, 2016 (D Guidon) - from Bergen and Valiant (2009) GENERAL Several mineralized zones occur on the Hislop property. The mineralized zones occur along a strike length of approximately 1,200 m, following the fault contact between mafic flows to the north and ultramafic rocks to the south. Gold is associated with the margins of feldspar porphyritic syenite dikes that have intruded the mafic and ultramafic rocks. The dikes are generally conformable to the contact between the mafic and ultramafic rocks striking west to northwest and dipping steeply to the north. The mineralized areas have been called from west to east, the West Zone, Shaft Zone and the South Area. WEST ZONE The West Zone sits directly on a major fault that strikes at approximately azimuth 122º (east-southeast) and dips steeply north or vertically. The fault is represented by a thick zone of talc-chlorite schist at least 70 m to 300 m thick. Fabric in the talc schist is closely spaced on a millimetre scale and most of the original fabric dips have been destroyed. The fabric is dominantly oriented with an azimuth of 122° and is nearly vertical. Rare zones in the talc chlorite show spinifex texture and whole rock high chrome contents (>2,000 ppm), which support the assumption that these rocks were komatiitic in composition. The talc schist forms the south wall of the current pit and extends approximately halfway across the pit in the west end, and almost entirely across the pit at the east end. To the south of the talc-chlorite schist, there is a zone of mafic volcanic rocks. Mafic volcanic rocks to the south of the talc-schist have a weak magnetic signature, with open fold axes apparent from magnetic surveys. To the north of the talc-chlorite schist is another group of mafic volcanic rocks. These rocks have a high magnetic signature and tight folding. Sandwiched between the northern mafic flows and the talc schist is a coarse-grained feldspar porphyritic intrusive rock. The rock is composed of 40% to 70% pink to grey five millimetre to 20 mm feldspar phenocrysts, sitting in a variably altered, aphanitic groundmass. This rock has been designated syenite, coarse quartz-feldspar porphyry, and even granite by earlier workers. Since the relatively unaltered phenocrysts of this intrusive appear to be potassium feldspar, it is reasonable to call this rock a coarse grained syenite. The syenite extends the length of the pit, is steeply north dipping, and reaches horizontal widths of 15 m to 50 m. The syenite appears to intrude the northern mafic sequence. Minor lamprophyre dikes intrude all rock masses and can be seen to cut mineralized material at the north contact zone. SHAFT ZONE The mineralization located in the vicinity of the New Kelore Shaft and the Goldpost Decline is called the Shaft Zone. The Shaft Zone is in turn composed of four separate zones: the South and 5-East zones on the south contact of the syenite, and the North and Decline zones on the north contact of the syenite. The Shaft Zone is located between surface and 150 m depth and varies in width from 2.5 m to 17 m. The average width is 5.5 m. The zone strikes at 120º and dips 85º to the north. SOUTH AREA The South Area is composed of the Marsh Zones (east, west, and central) and the South Area (not to be confused with the South Zone of the Shaft Area). The Marsh Zones have a strike length of 100 m and extend from surface to 130 m depth. The average width is approximately three metres. The zone is open at depth. The Marsh Zones are 200 m south-southeast of the shaft at the south side of the syenite contact.

Apr 07, 2016 (A Wilson) - The Hislop mine is owned by St Andrew Goldfields Ltd. Their mining property is situated adjacent to the south of the Grey Fox property. The principal gold mineralization (West, Shaft and South deposits) is stretched out along, or marginal to, a 1,300 metres strike length of the Gibson-Kelore Fault Zone, and there may be more than one zone of mineralization in some localities. A majority of the gold mineralized zones on this property occurred along a fault contact between mafic volcanic flows and ultramafic rocks (Roscoe and Gow, 2006). This contact strikes west-northwest and dips steeply to the north. Gold mineralization at this site is associated with the margins of porphyritic dikes intruding both of the above rock units. In 1990 and 1991, the property was operated as a joint venture with Goldpost Resources Inc. and St. Andrew Goldfields Ltd during which underground drilling was followed by some underground mining. In 1993, St Andrew Goldfields Ltd purchased the remaining interest in the property, and subsequent underground mining was conducted from 1993 to the end of 1994 with milling continuing until early 1995 (Valliant and Bergen, 2009). St. Andrew began open-pit mining of the West Zone in 1999, but operations were placed on care and maintenance in late 2000 because of low gold prices (Valliant and Bergen, 2009). A small amount of mining was also carried out in 2006 to 2007, and open pit mining resumed in mid-2010. A total of 10,952 ounces, 20,184 ounces and 23,530 ounces were produced in 2010, 2011, and 2012 respectively (see 2012 Annual Report of St Andrew Goldfields Ltd). During 2012, the East Pit continued to perform well, especially on grade reconciliation. St Andrew Goldfields Ltd has started to de-water the West Pit to bring it into production later in 2012.

Apr 07, 2016 (A Mitchell) - Geological mapping indicates that the New Kelore (Bush) deposit area is almost entirely glacial drift covered. Bedrock geology and structure in the area are complex and not well understood. The results in the area are complex and not well understood. The results of both the mapping cited above and of exploration diamond drilling (assessment and exploration files, Resident Geologist's Office, Kirkland Lake) suggest that the deposit is hosted mainly by variably sheared and variably altered weakly metamorphosed (greenschist or lower metamorphic facies, except marginal to sizeable intrusive bodies, where contact aureoles or amphibolite grade may be developed) subaqueously deposited tholeiitic and komatiitic volcanic and interflow sedimentary rocks. Intrusive rocks in the area include dikes and irregularly shaped bodies of both mafic and felsic syenity, felsic hornblende syenite, hornblende diorite, and narrow (metre scale or less in width) dikes of biotite lamprophyre. Narrow (generally tens of metres in width) north striking diabase dikes of the (Proterozoic according to Heaman 1989). Matachewan swarm also occur in the area. The deposit location is indicated by Jonstone and Trowell to be about 1,100 metres southwest of the interpreted location of a relatively narrow Porcupine- Destor Fault zone (PDFZ) while Jensen interpreted the PDFZ to be wider and closer to the deposit than this. Bedrock hosting the deposit appears to be either: a) (Archean) Stoughton- Roquemaure Group rocks which occupy part of the north limb of the east striking and east structurally complex bedrock assemblage which is spatially associated with the PDFZ and which is termed by Jensen and Langford the Porcupine-Destor Complex.

Lithology

Lithology Comments

Apr 07, 2016 (B Berger) - The pit geology consists of a central, coarse-grained mauve to red, east-striking syenite dike separating variolitic basaltic rocks to the north from ultramafic and mafic metavolcanic rocks to the south. Pegmatitic lamprophyre and hornblendite occurs sporadically along the south contact of the syenite and was mistakenly included with the metavolcanic rocks by previous workers. Gold is hosted in pyritic mafic and ultramafic metavolcanic rocks along the south side of the syenite and is rarely present in the intrusion. Localized, but intense, carbonatization, sericitization and hematization accompany the mineralization. The syenite dike is petrographically and chemically similar to the Iris syenite stock, in Harker Township, which hosts gold mineralization. The dike also displays similar geochemistry to another albitite dike associated with gold mineralization in northwest Harker Township.

Apr 07, 2016 (A Mitchell) - Anomalous gold tenors at the Bush occurrence (in the shaft area) appear to be spatially associated with a 115 striking and 75-80 degrees north dipping medium to coarse grained pink to red coloured weakly porphyritic cataclastic polyphase felsic albite syenite dike which intrudes variably altered (feldspathized, silicified, chloritized, serpentiinized, hematized, sericitized, and epidote- altered) ultramafic to felsic volcanic rock and interflow sediment. The dike is reported to be 25-30 feet wide at surface and to widen at depth to widths in excess of 130 feet. The syenite dike is in contact along part of its south contact with what is described as a variably pyritic and variably silicified (0.25 inch wide quartz veinlet riddled) carbonate breccia, with pyritic talc-chloritic schist, and with variably pyritic chlorite breccia. Proximal to (within 25-30 feet of) the dike, the host spracrustal rocks area pervasively metasomatized ('syenitized' or 'porphyritized'). At relatively more dike distal locations (as far away as 200 feet), the host rocks area variably metasomatized and variably pervasively carbonatized. At dike distal locations (at distances greater than about 200 feet from the dike), the host rocks may be weakly pervasively carbonatized. Host supracrustal rocks are reported (exploration files, Resident Geologist's Office, Kirkland Lake) to be variably pyritic (containing 1-5% of pyrite) with best pyrite development occurring as halos marginal to the intersecting fractures. Distal to the felsic albite syenite dike, the distinctive carbonate breccia grades into or is in faulted contact with either talc-chlorite schist or chlorite breccia.

Mineralization

Mineralization Comments

Sep 03, 2010 (D Guidon) - from Bergen & Valliant (2009) Two settings and styles of gold mineralization are present at the Hislop property. Gold occurs on the south side of the syenite dike complex in the carbonate and carbonate breccia rock which separates the syenite dikes from the less altered ultramafic volcanic rocks to the south side. Gold also occurs on the north contact of the syenite dike complex in quartz veinlets, stockworks, and fractures in hematite altered and syenitized mafic metavolcanic rocks. The rocks and the associated mineralization strike northwest-southeast and dip steeply north to vertically. Later cross faults trend both east-west and northeast to southwest, and are steeply to vertically dipping. Gold mineralization occurs along the length of the syenite dike complex, but the gold-bearing zones tend to be wider and higher in grade where associated with these cross faults. The minor off-setting along these faults causes the mineralized zones to have an irregular appearance in detail. Previous reports have described several zones of gold mineralization occurring in three main mineralized areas along a strike length of 1,100 m, centred on the original shaft. These include the Shaft Area, the South Area, and the West Area. SAS has explored and reinterpreted the near surface area of the Shaft Area.

Sep 03, 2010 (C Bath) - a) the Shaft/80 Zone is hosted by both carbonate breccia and syenite near the syenite dike's south contact; b) the North Zone is hosted by syenitized andesite north of the syenite dike; c) the South Zone is hosted exclusively by carbonate breccia located south of the shaft; d) the Breccia Zone is northwest of the shaft, strikes 123, dips 75 degrees northeast, and is hosted by the contact zone developed between brecciated syenite and syenitized andesite; e) the Marsh Zone is hosted exclusively by carbonate breccia west of the South Zone and may represent a faulted extension of the South Zone; f) the North Zone is hosted exclusively by syenitized andesite; and g) the 64 Zone is a mineralized shear hosted by either silicified talc-chlorite schist or by (sheared) basic syenite. It appears that all lithologies mentioned above are capable of hosting anomalously elevated gold tenors which are associated with native gold and/or auriferous pyrite mineralization. Prest (1957) noted that anomalous gold tenors occurred in carbonate breccia marginal to lamprophyre dikes but not within them, that the highest gold tenors at the deposit (as it was known circa 1957) were almost always associated with material containing elevated pyrite contents but that pyritic material was not always anomalously auriferous ...a linear zone of disseminated gold mineralization is present in a brecciated fault zone characterized by green carbonate fragments. This zone lies between altered komatiitic flows and a very competent, silicified syenite porphyry dike...At the Kelore Mine, a correspondence exists between the deformation style and the alteration assemblage developed in the komatiitic rocks.

Apr 24, 2015 (J Suma-Momoh) - 24/04/2015 (J. Suma-Momoh) Diamond drilling during 2014 along the northern Hislop property boundary, aimed at following-up on the southerly strike extension of the 147 Zone, returned significant near surface intersections including 10.38 g/t gold over 25.0 m in DDH H14-019.

Mineral Record Details

References

File - Resident Geologist files KL-0305, KL-1357, KL-1975, KL-2175, KL-2787, KL-2788, KL-3565, KL-4444

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Part - Geology and ore deposits of the Ramore area

Publication Number: ARV45-06.001 Page: 24-27  Date: 1998

Author: Moore E.S.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of Hislop Township

Publication Number: ARV65-05 Page: 45-47  Date: 1997

Author: Prest V.K.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area

Publication Number: OFR5735 Page: 1035-1050  Date: 1990

Author: Bath A.C.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geological Synthesis of the Highway 101 Area, East of Matheson, Ontario

Publication Number: OFR6091 Page: 74-76  Date: 2003

Author: Berger B.R.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology of the Hislop Township Area

Publication Number: M2527 Scale: 1:20,000    Date: 2000

Author: Berger B.R.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology of the Highway 101 Area, East of Matheson, Ontario

Publication Number: M2676 Scale: 1:50,000    Date: 2003

Author: Berger B.R., Luinstra B., Ropchan J.C.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian geology, Hislop and Guibord townships

Publication Number: OFM0143 Scale: 1:20,000    Date: 1990

Author: Troop D.G.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Precambrian geology, Ramore area, northwestern part, District of Cochrane

Publication Number: P2860 Scale: 1:15,840    Date: 1985

Author: Jensen L.S.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Precambrian geology, Ramore area, districts of Cochrane and Timiskaming

Publication Number: P3131 Scale: 1:63,360    Date: 1989

Author: Jensen L.S.

Publisher Name: Ontario Geological Survey

Location:

Publication - Technical Report on a preliminary feasibility study of the Hislop Project, Ontario Canada, for St Andrew Goldfields Ltd.; 166p

Publication Number: NI 43-101 Date: 2009

Author: Bergen, R.D. and Valliant, W.W.

Publisher Name: Scott Wilson Roscoe Postle and Associates Inc.

Location: Kirkland Lake RGO

Publication - Property Visit 082

Publication Number: PV082 Date: 1982

Author: Lovell, H.L.

Publisher Name:

Location: Kirkland Lake RGP office

Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt

Publication Number: P3398 Scale: 1:100,000    Date: 1999

Author: Ayer J.A., Berger B.R., Trowell N.F.

Publisher Name: Ontario Geological Survey

Location:

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