Gold/PGE/Diamond - Heron Bay Property
Available for option 73 claims

Chromite Cr203 vs MgO
Chromite Cr203 vs TiO2
Heron Bay Property Location
 

Heron Bay property ties on to Teck Cominco & Barrick Gold Properties


 
                         Broken pillow  Breccia                   Pyroclastic Breccia                       Pyroclastic Breccia

           

                       Actinolite - xenoliths                              Diatreme Plug                          Sample location Sample  #4117

Conglomerate                    East of Pic River

                                                                                                                                                                                            

                                                                Property Description

The Heron Bay Property consist of 73 claims of the favorable Hemlo-Heron Bay shear  with Porphyry Zones on the property and a Gold occurrence of 2.25 g/t Au in intermediate to felsic pyroclastic rock. The Heron Bay property is located 27 kilometers west of the Hemlo Gold Mines, west/northwest of Metal Corp. and south of Marathon PGM Corp. The Heron Bay property ties on to Teck Cominco's property and Barrick Gold property in the PIC Twp. claim map G-0630, in the Thunder Bay Mining Division.  (See claim location maps below).

 

    Heron Bay claim location maps, March 2008  

  
 
 

The property comprised of unpatented claims:    1208950,1208951,1216786,1231874,1232949,1246786,1246788,  4209031, 4208646, 4208647. 

The property lies in the gold structure of Heron Bay. 

The important gold zones found to date are in the Felsic volcanics near the contact with metasediments on the Teck Cominco Limited property (The Stenlund property).

Geology

The Hemlo gold deposit originally contained at least 80 million tonnes at an average grade of 7.7 g/t. The Williams Mine is located at the western end of the Hemlo deposit, the David Bell Mine at the eastern end and Newmont’s Golden Giant Mine in the central position.The Hemlo deposit lies on the south side of the east-west trending Hemlo-Heron Bay Greenstone Belt of Archean volcanic and metasedimentary rocks in a major ductile dextral shear zone. In the vicinity of the Williams and David Bell mines the supracrustal rocks are divided into the Playter Harbour Group (mafic volcanic rocks) and the Heron Bay Group (felsic volcanics and metasediments). The Heron Bay Group dips to the north, structurally overlies the Playter Harbour Group, and contains all the economic gold deposits found to date at Hemlo. The ore is generally associated with the Moose Lake Porphyry (MLP) and is characterized by intense silicification and the presence of gold, molybdenum, arsenic, antimony, mercury, vanadium and barite.

  • The Stenlund Property (Teck Cominco) consists of 37 contiguous claim units totalling 592 hectares, 10 km southeast of Marathon, Ontario.
  • The Stenlund Property lies within the Hemlo-Heron Bay Shear Zone, a regional-scale deformation zone which also hosts the Hemlo deposit.
  • The David Bell and Williams Mines, 50% owned by Teck Cominco and 50% by Homestake Canada Inc. (a subsidiary of Barrick Gold Corporation), produced a total of 536,000 ounces of gold in 2003.
  • The Stenlund Property hosts two significant gold zones: the Porphyry Zone and the 109 Zone.
  • The Porphyry Zone has been aggressively explored resulting in several high-grade but erratic intersections.
  • Zone 109 was discovered in 1998, returning one interval of 9.3 g/t gold over 7.3 m across a series of K-feldspar-altered quartz-carbonate veins hosted in felsic fragmental rocks and quartz-feldspar porphyry within a zone of intense deformation.
  • Previous work included 67 diamond drill holes totalling 15,675 m completed between 1983-86, mostly in and around the Porphyry Zone.
  • Between 1997 and 2002, Teck Cominco completed 34 diamond drill holes totalling 15,119 m, including 20 drill holes in the 109 Zone area.
  • At present the zone is defined by drill holes on sections spaced at 100 m. Diamond drilling planned for this fall will attempt to extend the zone by determining the structural controls on the mineralization and to further define grade and continuity within the zone.
  • In late 2004, 5 diamond drill holes totalling 2853.7 m were completed within the 109 Zone. Drilling targeted a series of K-feldspar-altered quartz-carbonate veins hosted in felsic fragmental rocks and quartz-feldspar porphyry within a 4 zone of intense deformation.
  • Highlights from previous drilling include 9.3 grams per tonne gold (g/t Au) and 184 g/t silver (Ag) over 7.3 m in ST98-11 and 12.6 g/t Au and 365 g/t Ag over 3.0 m in ST98-09.
  • 2004 drill holes focussed on the ST98-09 and ST98-11 area. Highlights include 18.28 g/t Au and 47.18 g/t Ag over 4.0 m in ST04-01 and 6.68 g/t Au and 60.1 g/t Ag over 1.5 m in ST04-03.

 

Access
The claims lie on the east shore of Lake Superior about 3 Km WNW of the settlement of Heron Bay. The C.P.R. railway crosses the centre in north-south direction and access to the claims can be made by following the tracks from the Heron Bay station some 3 Km. Alternately the west end of the group can be gained by boat from the waters of Heron Bay, a distance of some 4 Km.

Geology

The property lies about 27 kilometers west of the Hemlo Gold Deposit in a similar series of rocks. Briefly, the Hemlo Series consists of: (1) Mafic metavolcanics, (2) Intermediate to felsic volcanics, (3) Metasediments.

                                                           

                                                        Heron Bay property geology       

         Summary: Exploration for Diamonds on the Heron Bay property

In the last year I located 14 different lamprophyre dikes and 5 diatreme dikes on the Heron Bay property, some are alkaline ultramafic lamprophyre and 2 dikes that has the same structure and Geology as the diamond bearing dikes found in Wawa (Sandor Diamond Occurrence in Wawa), the dikes are composed of dark, greenish-grey rock that weathers olive grey. They are highly fractured, moderately carbonatized and non-magnetic. They are composed of up to 20 % actinolite and supracrustal xenoliths. The dikes are hosted by massive, mafic metavolcanic rocks.

Specific comments:

Diatreme Dikes                         Superior Croton

These units was seen intruding the intermediate to felsic pyroclastic rocks on the property. The dikes are dark brown - black color on fresh and weathered surfaces. The dikes are 1m wide, have an aphanitic matrix and contains rimmed calcite and quartz amygdules and vugs with occasional angular glassy fragments. A weak hematization of country rock if often associated with dikes silicified, chilled contacts.



Kimberlitic unit on this property:

The unit consist of olivine and phlogopite, contained matrix of fine-grained phlogopite, olivine, spinel, perovskite,chromite and carbonate. The Chromite are in the Diamond Inclusion and Intergrowth Field, the Phlogopite-Biotite are in the Kimberlite Trends. ( See attached Chromite oxide data - plot )

Chromite oxide data from the Heron Bay rock Sample

Summary: Chromite

- There are several grains that plot within the diamond intergrowth and inclusion fields as defined by Fipke et al. (1995) MgO- Cr2O3 plot.

- Several of these grains plot within the diamond inclusion and intergrowth field as defined by Fipke et al. (1995) TiO2- Cr2O3 plot.

- Two grains plot in the field "unique to kimberlite and lamproite " on Fipke et al. (1995) TiO2- Cr2O3 plot.

- Three grains plot in the overlap field of Fipke et al. (1995) TiO2- Cr2O3 plot.


Specific Comments

Chromite:

The chromite oxide data is plotted on both the Cr203- MgO and Cr2O3- TiO2 plots. From the Cr2O3- MgO plot (Figure 1) there are 2 grains (30,31) that plot within the diamond intergrowth field and 3 grains (18,34,35) that plot within the diamond inclusion field. This is significance as these grains suggest that they were derived from diamond-bearing kimberlite.

From the Cr2O3- TiO2 plot (Figure 2), grains 18,30,31,34 and 35 all plot within the diamond inclusion and intergrowth field as expected. In addition grains 1,10,12 and 13 also plot within this field. Note that these latter grains plot close to the diamond intergrowth and inclusion fields of Figure 1 and may also signify diamond-bearing kimberlite.

There are 2 grains that plot within the field unique to kimberlite and lamproite (5,8) on the Cr2O3- TiO2 plot and 3 within the overlap field (1,19,37).


For more Information on this property contact:  email. rwahl@renegadeisp.com

 

 

                                

 
 
 
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