Rockhaven Resources Ltd. (TSX VENTURE:RK) has announced assays from the first three holes of its 2010 diamond drilling program at its wholly-owned Klaza property, which is located in the Dawson Range Gold Belt of central Yukon Territory.
The property is road accessible and is situated in an active placer gold mining camp and historical hard rock gold and silver mining district. A total of 1,641 m of diamond drilling was completed in eleven holes during the program. The holes tested down dip of various trench exposures on three of the four main, gold- and silver-rich structural zones that have been discovered to date (see News Release dated August 25th, September 21st and October 19th, 2010).
Assays have been received from three of the eleven diamond drill holes. The first three holes were collared and aligned to test a section across the Klaza Zone and adjacent wallrocks. DDH-KL-10-01 and -02 explored the northern edge and footwall of the Klaza Zone, but returned low values for gold and silver. DDH-KL-10-03 was collared in hangingwall rocks and tested the full width of the Klaza Zone. This hole graded 2.29 g/t gold and 36.1 g/t silver over 19.75 m within a broader interval averaging 1.10 g/t gold and 23.5 g/t silver over 50.28 m. Intersected lengths are interpreted to be approximately 90% of true width. DDH-KL-10-03 pierced the zone 50 m down dip of trench KL-10-09, which graded 2.33 g/t gold and 34.9 g/t silver over 16.35 m, within a broader zone that averaged 0.72 g/t gold and 14.8 g/t silver over 58.79 m.
Mineralization within the Klaza Zone is associated with a series of narrow, discontinuous feldspar porphyry dykes. It occurs in veins, breccias and sheeted veinlets and consists of galena, arsenopyrite, pyrite and sphalerite in quartz and carbonate gangue. The sulphide minerals typically comprise 1 to 10% of the rock, locally increasing to between 20 and 80% over 25 to 100 cm intervals. Pervasive phyllic and argillic alteration are developed in granodiorite wallrocks and within clasts in the breccias. The matrices of the breccias contain fine-grained black sulphides. The mineralization is spatially and probably genetically related to the porphyry dykes, which strike west-northwesterly and dip steeply to the south. The dykes themselves are usually barren or only weakly mineralized.
The remaining holes from the 2010 drill program will be announced upon receipt of assays.
Core samples are being processed in 36 sample batches with each batch including two assay standards, two blank samples, and one duplicate sample. Analytical work is being done by ALS Chemex with sample preparation in Whitehorse and assays and geochemical analyses in North Vancouver. All core samples were initially analyzed for gold by fire assay followed by atomic absorption (Au-AA24) and 35 other elements by inductively coupled plasma-atomic emission spectroscopy (ME-ICP41). Samples in mineralized intervals are being assayed for silver (Ag-OG62). The average grades reported for holes KL-10-01, -02 and -03 are for the assay results. All standard, blank and duplicate samples passed QAQC reviews.
The 2010 program was conducted by Archer, Cathro & Associates (1981) Limited. Technical information in this news release has been reviewed by Heather Smith, B.Sc., P.Geo., a qualified person for the purpose of National Instrument 43-101.