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Zap Silver Property
The Zap property hosts silver-lead-zinc mineralization with high grade vein and bulk tonnage potential. It is 100% owned by Rockhaven Resources Ltd. with no underlying royalties. The property is favorably located within the Tintina Gold Belt, a metal province that stretches across Yukon and Alaska which includes major deposits such as Pogo, Fort Knox and Donlin Creek.
Previous operators carried out mapping, soil geochemical surveys, geophysical surveys, hand trenching and diamond drilling from 1977 to 1979. Although they defined a large silver-in-soil geochemistry anomaly, the drilling was ineffective. None of the drill holes intersected mineralization like the most prospective zones seen at surface, mostly because they were lost before reaching target depth or were drilled subparallel to rather than across the mineralized zones.
No further work was done on the property until 2006 when Strategic Metals Ltd. restaked the area and conducted prospecting and geochemical sampling. Rockhaven purchased the property from Strategic in January 2008.
The Zap property is located within the Mackenzie Platform, a tectonic element comprising episodic miosynclinal sediments deposited on the west side of the North American from Early Proterozoic through to Paleozoic times. The property geology consists of quartzite, shale, limestone, and dolomite with locally developed breccias and fracture systems. A klippe (a locally preserved block of overthrust strata) lies within the central part of the property and contains its oldest rock, a fine grained sandstone that caps the target.
Three types of mineralization have been identified beneath the klippe at the Zap property (a star with the associated number is provided on the geology map to show locations):
- Galena and tetrahedrite occur with coarse white barite crystals in breccia developed in a carbonaceous and chert rich zone immediately below the klippe. Past operators assumed that the mineralization developed along the thrust fault at the base of the klippe was hosted by a normal fault dipping in the opposite direction; therefore, their drill holes did not properly test the target. Two holes drilled by the Company to test this target also failed to intersect mineralization.
- Sphalerite and galena are found within coarsely crystalline dolomite matrix in brecciated grey and orange dolostone, west (down section) from the carbonaceous (Type 1) breccias. These Type 2 breccias have not been systematically sampled, but they appear to be more erratic than the Type 1 breccias. Mineralized specimens typically produced lower values, between 20 and 80 g/t silver with 0.2 to 3 % lead. This type of mineralization was intersected in some holes with the best interval grading 4% lead, 0.3% zinc and 277.7 g/t silver over 3 m.
- Galena and tetrahedrite are also hosted in veins that cut the dolostone down dip to the south of the Type 1 breccias. The vein mineralization is relatively massive and samples taken in 2006 ranged from 2050 to 4010 g/t silver with 41.9 to 71.1 % lead (see photos on pages 3 and 4.) There is only weak soil geochemical response in the vicinity of the veins. A 2009 drill hole then tested down dip from the vein exposure intersected weak mineralization.
 Soil sampling has outlined coincident, moderately to intensely anomalous silver, lead and zinc values that appear to be sourcing primarily from the Type 1 breccias located immediately below the klippe. The anomalous trend cuts obliquely across topography and is locally modified by downhill dispersion. The values weaken to the west after crossing the ridgeline but the trend continues intermittently, turning northward before swinging back to the east to follow the approximate surface trace of the thrust fault. The intermittent response on the north side of the ridge could be due in part to poor soil development on the steep rocky slopes. Both limbs of the anomalous trend are open to the east. Values drop off abruptly above the thrust fault.
Rockhaven Resources Ltd. is a mineral exploration company exploring for silver and gold in mining friendly jurisdictions in Canada. It is focused on growth through acquisition of advanced stage projects and recognition of new grassroots targets. Rockhaven's current properties are Plata, Zap, Groundhog and Northern Abitibi. All are favourably located in premier mineral belts. Systematic exploration is planned to unlock the potential of these highly prospective silver and gold projects.
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