SAMPLING at Core Exploration’s Yerelina Zinc Project in South Australia’s north has identified zones over 10 metres wide and zinc values up to 5%. High grade mineralization has been identified in at least five individual structures interpreted to be up to 1.5km long.
Representative channel sampling of Big Hill gossan material on Core Exploration’s Yerelina Zinc Project in South Australia.
The representative sampling was carried out across newly identified wide, metal-rich gossans with wide zones found at Big Hill and high zinc values recorded at Great Gladstone.
Core says the 10 metre-wide sub-cropping gossan at Big Hill is the surface expression of the Big Hill mineralized shear zone, which has highly anomalous zinc, lead and silver over at least 2km in sampling to date.
About 5km east of Big Hill, previous mapping campaigns have discovered high grade zinc, lead and silver mineralization extending over 1km at Great Gladstone. Of 38 samples along a 1km section of fault zone, 34 returned combined lead and zinc assays in excess of 10,000ppm and more than 1 gram/tonne silver with the best assay of 14.7% zinc.
Channel sampling at Great Gladstone indicates grades of 2.5 3% zinc and up to 109 grams/tonne silver and 4.9% lead in channel sampling more than 300 metres apart.
Core’s surface mapping, detailed magnetic surveys and remote sensing imagery shows clear evidence of numerous historical workings and outcropping mineralization that can be mapped over hundreds to thousands of metres in repetitious gossanous vein sets over a very broad 8km-wide and 2km-long area.
The Yerelina project is highly prospective for shallow zinc mineralization as evidenced by high grade mineralization identified on at least five separate north-south structures. Further channel and rock chip sampling along with regional and infill soils are under way on the project to test extensions to and potentially discover additional mineralized shear zones.
The finely ground rock material from representative channel samples has been submitted for assay and laboratory results are expected shortly. Further channel sampling results are expected from other shear zones as field work progresses.
Reconnaissance and infill soil sampling is also under way at Yerelina to test for extensions of currently known shears and discover additional mineralized shears within the 8km x 2km prospective area.
Core was recently awarded a grant of $75,000 as part of the South Australian Government’s PACE Discovery Drilling 2015 program. The proposed drilling project will comprise six angled diamond core holes targeted under the known outcropping mineralization to better understand grade distribution, mineralization potential and geological controls.