NORTHERN SWAYZE GREENSTONE BELT
The northern Swayze Greenstone Belt is located within the Abitibi Sub-Province of the Superior Province. The Kenogaming/Pharand Project is specifically located within the Hanrahan assemblage which is confined to the southeastern part of the northern Swayze Greenstone Belt. The Hanrahan assemblage consists predominantly of calcalkline intermediate and felsic volcanic rocks that have been intruded by extensive ultramafic and gabbroic sills (cumulate-textured ultramafic bodies). The cumulate ultramafic bodies are the specific targets comprising the Kenogaming, Pharand 1 and Pharand 2 prospects.
The ultramafic cumulates are fine to medium grained massive rocks that are strongly magnetic, are locally serpentinized and talcose and may contain fuchsite mica.
Differentiation within the ultramafic bodies is observed as serpentine units grade upwards from olivine orthocumulates into gabbroic zones and spinifex-textured pyroxenites. Rare spherical structures (amygdule's?) filled with serpentine and sulphides suggest evidence for an extrusive origin for some of the massive cumulate-textured ultramafic rocks.
Throughout the Swayze Greenstone Belt, several nickel occurrences are associated with the cumulate-textured ultramafic rocks (mndm files R297, figure 3). The documentation of large ultramafic bodies with nickel mineralization in western Kenogaming Township is a strong indication of good potential for Komatiite - hosted nickel deposits similar to the nickel discoveries in Crawford and Reid Townships near Timmins, Ontario (mndm files 20000018167). In association with nickel, chromium, cobalt and platinum group elements in assay results are also of specific interest.
KENOGAMING / PHARAND PROSPECTS
The Kenogaming Prospects consists of 7 claims located in eastern Kenogaming Township. In 1979 after completion of a localized magnetic/HLEM geophysical survey, Amax Minerals tested a strong magnetic anomaly with diamond drill hole KEN - #1. The 184.5 m long hole intersected up to 0.25% nickel in carbonated and serpentinized cumulate ultramafics with interbeds of chlorite and talc alternation over a 3.0m section at the bottom of the hole. The entire hole encountered cumulate ultramafic assemblages (mndm files 42A04NVV855, Table 1).
In 1997 a follow up drill hole JOE - ANNE SALO J-1-97 was drilled to a depth of 119m, 42m to the northeast on an additional localized magnetic geophysical survey.
Beginning at 23m from surface, the hole encountered 78m of cumulate ultramafics with assay values up to 0.33% Nickel, 0.17% chromium and 165 ppm cobalt. Specific assays are presented on tables 1 & 2 (mndm files 42A04NVV2003) (figure 4). The two drill holes are 42m apart and were drilled on the same magnetic anomaly.
Subsequent to the drilling, the regional Ontario Geological survey Total Intensity Magnetic/Electromagnetic survey was flown over all the prospects (M81379). The survey outlined the main magnetic anomaly (56500nT+) ultramafic cumulate intrusive body to be 700m wide and 1000m long (M81379, Figure 5). The intrusive contains semi-continuous nickel, chromium and cobalt mineralization beginning at 15m and extending to a current depth of 184.5m (tables 1 & 2). The intrusive may extend another 1.0km to the east and certainly at depth. (figure 6).
At the extreme eastern edge of the Northern Swayze Greenstone Belt (a fault bounded remnant wedge), the Hanrahan assemblage continues eastward into Pharand Township. The assemblage is completely surrounded by the Kenogamissi Batholith and ends (fault truncated) within Childerhose Township (figure 2). Previous exploration activities encountered well mineralized pyritic pyroxenite/gabbroic ultramafic intrusive bodies with elevated platinum and palladium values contained within the Hanrahan assemblage of volcanic rocks.
RT Minerals has staked two large ultramafic intrusive prospects; Pharand 1 (16 claims) and Pharand 2 (14 claims) within Pharand Township (figure 1). The claim blocks cover the most intense magnetic signatures (56500nT+) currently believed to represent cumulate ultramafic intrusive bodies by analogy to the magnetic intensity observed at the Kenogaming prospect and throughout western Kenogaming Township (mndm files 20000018167).
The magnetic features within the Pharand prospects are on trend with the Kenogaming intrusive and lie within the Hanrahan assemblage of volcanic rocks (figures 7 & 8, M81379).
Future drilling is planned on the Kenogaming, Pharand 1 and Pharand 2 prospects with the intent of expanding the nickel, chromium, cobalt mineralization within the Kenogaming intrusive. In addition, the program will target new cumulate ultramafic intrusive bodies within the strongest magnetic signatures identified on the Pharand 1 & 2 prospects.