Text Box: Goldbar Lake Property Ready To Drill
VMS Cu, Zn, Ag, Mo and High Gold Potential

Available for Option

 

 

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Introduction:
 
The Goldbar Lake property contains Cu-Zn-Ag-Au-Ti showings which have been worked intermittently since the 1950's. All drill holes reported in this section are to be found on the Goldbar Lake property.
 

Marlhill Mines Ltd. conducted diamond drilling during 1954-55 on the Marlhill showings. Drilling of the Marlhill occurrence delineated a northern copper

mineralized zone with intersections up to 0.45% Cu / 42.8 m in drill hole M55-17A and a southern zinc - copper mineralized zone with intersections
up to 1.11% Zn over 6.4 m - including 3.33% Zn / 1.8 m in drill hole M55-20.
 
In the southern part of the Goldbar Lake property drill hole M55-12 drilled by Marlhill Mines Ltd. intersected 4 feet of 0.62 oz/t Au.

Cumberland Resources 1984 - Molybdenum, Arsenic and Lead Soil Anomalies over 150 m x 200 m on the Goldbar Lake property claim 1248058.

One soil anomaly zone on line 80 center in claim 1248058 appears to be strong in Molybdenum, Arsenic and elevated in Lead. Prospecting is required to check for a favorable host rock structure. Detailed prospecting should zero in on the geochemical and geophysical anomalies.

 
Molybdenum - Arsenic - Lead Anomalies
 
                                                                             Molybdenum                    Arsenic                            Lead
 
Additional work conducted by Noranda during 1988-89 has included geological mapping, soil and lithogeochemistry surveys plus diamond drilling.
Hole MH88-01 intersected 0.52% Zn over 42.5 m (including 3.09% Zn over 2.0 m) within the Marlhill shear zone. No Cu - Au assays where reported.
 
Work conducted by Noranda during 1990 on the property included Hole MH90-11 on the eastern center section of Goldbar Lake. Hole MH90-11
intersected 5.6 m of 3% sphalerite with 10% py-po no assays where reported.
 
One grid was cut by Phoenix Matachewan Mines on the property. The Grid 1 East was cut and Geological mapped. Also a VETM survey
was contacted on the property. Phoenix Matachewan Mines outlined a number of drill targets to be drilled on the property. Due to funding problems in November 2008 Phoenix Matachewan Mines couldn't go forward with the drill program / option payment and returned the property to me. Short time after Phoenix Matachewan Mines changed the company to Galahad Minerals Inc. with a 10 to 1 split.
 
Also diamond drilling in 1954-55 indicated a zone in drill hole M55-22 with over 100 m of 0.25% Cu and Gold values not reported. Sample taken from this shear structure in 2009 shield 2.84% Cu,120 ppb Au and 550 ppm Ni. The shear structure has high gold potential.
 
 
Shear zone sample site
 
 
The Marlhill - Goldbar Lake showings appear to occur along the same stratigraphic horizon, All showings consist of quartz stringers hosting pyrite,
chalcopyrite and sphalerite mineralization within quartz-sericite schist. The Marlhill Showing  is characterized by two separate sub-parallel copper and
zinc plus-minus gold rich zones within a zone up to 300 feet wide and traced for 2,000 feet along strike. All holes drilled into this zone where short holes, deeper drilling along this zone may will outline a base metal - gold deposit. Most of the ore bodies of past and producing mines within this green stone belt are deep seeded. (Example Hemlo Mines surface rock samples 150 ppb Au)
 
The Goldbar Lake property (Marlhill) still has excellent potential to host a base metal - gold deposit. Future exploration also should be concentrated along the horizon described above.

 

Goldbar Lake Property:

 

The Property consist of 83 (1,328 hectare) continues mining claims in the Walsh Twp. G-0635  recorded in good standing in Thunder Bay Mining Division.
 
Claim Numbers:
 
4207482, 4201000, 4201001, 4207483, 3015159, 1248058, 3015219, 3015123, 3015122, 4222879
 

Location and Access

The Goldbar Lake Property is located within Tuuri and Walsh Township ( G 635 and G 636 ) approximately 225 kilometers via Trans Canada Highway 17 northeast of Thunder Bay Ontario.

The Trans Canada Highway crosses the southern quadrant of the property and provides excellent access to the south half of the property. Access to the north of the property is restricted to trails / logging roads along the hydro lines. Electrical power lines cross the property. The property is located between the towns of Terrace Bay and Marathon which can provide all supplies and manpower needed for exploration and development.

Property Geology

A laterally extensive unit or units of chert, graphitic shale, and sulphidic chert-magnetite iron formation, collectively interpreted to be exhalites, is of critical interest on the Goldbar Lake property. It lies along the contact between the central felsic sequence and the flanking more mafic volcanic sequence, and thus warps around the major fold structure that closes to the east. To date this unit has been interpreted to cap the felsic sequence, thus conforming to the interpreatation of the major fold being anticlinal.

Preliminary compilation of geochemical data indicates that the felsic rocks are high temperature rhyolites, with intercalated mafic rocks that are profoundly Eu - depleted (Franklin 2005). "The felsic strata are remarkably Na-depleted, and just below the exhalite unit, they are Mn and base-metal enriched" (Franklin 2005).

Regional Geology

The Goldbar Lake property is located on the north shore of Lake Superior mid-way between Marathon and Terrace Bay. The property is centered on a large area of Archean aged metavolcanics within the Abitibi-Wawa subprovince. A major felsic vocanic centre forms the core of an antiform, and is overlain by a thin, laterally extensive unit of chert, shale sulphide iron-formation and related sedimentary rocks.

The felsic volcanic sequence in the Goldbar Lake area is an antiformal sequence of rhyolite flows, coarse epiclastic breccia, minor pyroclastic strata and some subvolcanic domes and dykes. The prominent antiformal axis is coincident with strong cleavage development with most primary features rotated to parallel the axis. These are interlayered with mafic flows, and capped by a near continuous exhalite unit. The capping exhalite units are overlain by a predominantly mafic sequence.

Preliminary geochemical compilation indicates that the felsic strata are "high-temperature" rhyolites, and that the mafic strata are profoundly europium (Eu) depleted. The latter are mainly andersite, whereas the overlying mafic flows are basaltic. The felsic strata and remarkably sodium (Na) depleted and just below the exhalite unit they are manganese (Mn) and base-metal enriched. In summary, the petrochemical data from Phonix Matachewan Mines indicate that the strata are part of a major high-temperature hydrothermal system.

Overall, the lowest part of the stratigraphic section corresponds to the antiformal axis. The antiform appears to plunge to the east and thus the western part of the system in the area of Santoy Lake, may represent the overall base of the section. That region is typified by epidotized mafic rocks, and is adjacent to a felsic intrusive complex that may contain portions of a subvolcanic sill system.

The past-producing VMS deposits in both the Manitouwadge (to the east) and Winston Lake (to the west) area are both associated with felsic sequences (proximal at Winston, siliciclastic at Manitouwadge). The presence of possibly laterally equivalent strata at Goldbar Lake, including well developed volcanic breccia, coupled with excellent geochemical indicators of high-temperature hydrothermal discharge indicate high VMS potential in the Goldbar Lake area. Both belts have yielded significant base metal deposits, the former producing over 65 milliion tonnes (Willroy, Geco and Big Nama Creek) of ore and the latter 6 million tonnes of ore (Winston Lake).

 

 Mineralization

Previous exploration has located several copper-zinc occurrences within the felsic sequence, near its anticlinal core. Examination of these indicates that these are stringer-type zones, surrounded by sericite-chlorite alteration, and rotated into the plane of schistosity. Immediately below the exhalite unit, the rocks are broadly manganese enriched, with    local base metal enrichment in several areas. Previous work focused on the stringer-type mineralization (e.g. the Starhill Zone) and ignored the upper part of the sequence where focused discharge and massive sulfide deposition appears to have occurred. For example, in the Bozema Lake area massive sphalerite occurs in the exhalite; this type of target is the primary focus of Phoenix Matachewan’s program. The past-producing VMS deposits in both the Manitouwadge (to the east) and Winston Lake (to the west) areas are both associated with felsic sequences (proximal at Winston, siliciclastic at Manitouwadge). The presence of possibly laterally equivalent strata at Goldbar Lake, including well developed volcanic breccia, coupled with excellent geochemical indicators of high-temperature hydrothermal discharge indicate high VMS potential in the Goldbar lake area. Goldbar Lake occurrence (0.98% zinc, 4.73% copper, 80.1 g/t silver and 0.76 g/t gold over 1.1m). In 2009 two new occurrences of 2.84% Cu and over 1g/t Au and anomaly values of Urainium have been located on the property.

 

Mineral Occurrences on the Property

 

Why Did We Select Goldbar Lake ?

nPart of the Abitibi-Wawa Greenstone belt
  • n     Contains 500 million tonnes of VMS resources
  • n    Average Size~4.5 million tonnes with 0.98%Cu, 2.4% Zn
nBetween two past-producing districts
  • n    Manitouwage: 4 mines, total >63 m tonnes
  • n    Winston Lake: 3 mines, total ~5 m tonnes
nMajor poorly-explored bimodal greenstone belt
  • nZn- and Cu-occurrences (Goldbar, Bozena, McKellar, Starhill), little work, almost no drilling
  • nDrilling by Eldor, Gulf Minerals in early 80’s at Bozema produced 10m of ~8% Zn
n
 

Encouraging Characteristics

  • nAntiformal structure increases prospective target length
  • nCored by possible subvolcanic intrusion, intruded into a bimodal sequence of dacite and basalt
  • nBimodal sequence capped by chert-exhalite unit that can be followed for 35 km around the antiform
  • nOverlain with structural disconformities by basalt and sedimentary strata
  • nDiscreet, intense alteration assemblages (garnet-chlorite, sericite)
n       Several historic occurrences

 

Goldbar Lake Property Claim Map

MnO_Na2O Anomalies

 

Mag_Na_VTEM

 

VTEM Survey: Additional Processing provides

"Ready to Drill targets"

  • Red dots: Highest priority, generally pyrrhotite -rich

  • Green dots: Second priority; pyrite ± graphite

  • Blue dots: disseminated sulfides

  • Note good correspondence with exhalite horizon

n

 

VTEM Anomaly

  • Na depletion: Best FW alteration indicator

  • Too widespread to provide well defined targets

  • Clearly corresponds to geophysical targets

  • Broad zone near Grid 1AW-1B indicative of sructural complexity

 

Manganese Anomalies Define Discharge Points

Mn is trapped in cabonate and oxide minerals

occurs either in the immediate FW or exhalite.

 

Derived Geochemical Index

Combined index indicates zones of highest geochemical priority

Vertical Derivative Magnetic Map

  • Vertical derivative map defines reversely polarized dykes very well

  • Assists in mapping, better defines margins of footwall highs.          

Total Field Magnetic Intensity Map

  • Proterozoic dykes mask some features

  • Exhalite corresponds to both linear "lows" and footwall "highs"

  • High's are due to sulfides and magnetite in alteration zones

 

Geology – Goldbar Lake Area

  • Mapping by Walker (OGS Geological Report 50) in late 1950's

  • OGS AeroTEM Survey (1998)

  • Voluminous files from the OGS resident geologists office

 

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Prospecting on the Goldbar Lake Property April 2009

 

Please contact me if  your interested in this property