Re: The Basalt Shoreline
in response to
by
posted on
Dec 02, 2010 12:40PM
Focused on the Rice Lake Gold Belt
......Overall, the magnetic survey data shows very good correspondence and continuity with the geology mapped on the adjacent San Gold mining lease. Moreover, very distinct rock unit and structural feature intersections present themselves as attractive drill targets. The prominent lithological features are interpreted as basalt and/or gabbro units possibly similar to the main gabbro unit that hosts the Rice Lake ore deposit or minor mafic units with altered contacts such as those hosting one of the near surface high-grade hanging wall deposits on the adjacent San Gold mine lease. One of these features is a 1.5 km long, roughly east-west trending magnetic high that is cut at three places by northeasterly, Type-16 oriented cross-fractures. Magnetic lows associated with these intersections are interesting since the injection of sulphides by gold-bearing fluids often converts magnetite, a magnetic oxide mineral, to pyrite, a non-magnetic sulphide mineral, resulting in patches of low magnetic intensity.
In the southern part of the survey area, another mafic unit is tentatively interpreted as a distal northwestern extension of the subvolcanically injected gabbro that hosts the Rice Lake and adjacent Cartwright deposits. Importantly, this southernmost mafic unit is also cut by the same regional Type-16 structures that are caused by the late stage deformation event that appears to have mineralized the entire central part of the Rice Lake greenstone belt.
Both of these strong magnetic zones are located in topographic valleys that have not been well prospected due to a lack of outcrops in these areas. This is evident when the magnetic data is overlain on high resolution LiDar topographic data.
The objective of the initial Strike Point property drill program is to investigate the extension of structures that contain gold mineralization on the adjoining San Gold mine lease, specifically, as noted above, the Type-16 vein orientations that cut rock units with high magnetic intensities and exhibiting magnetite destruction where the two features intersect. The two major rock units are intersected by 4 Type-16 vein structures resulting in eight target areas. Structure 1 contains two Priority 1 targets, one Priority 2 target and two Priority 3 targets; Structure 2 contains one Priority 1 target, Structure 3 contains one Priority 4 Target: and Structure 4 contains one Priority 5 target. The three Priority 1 targets will be drilled