Carpentaria Exploration Limited (ASX:CAP) Further Exploration Success And New Iron Ore Discovery Confirmed At Hawsons
Brisbane, June 8, 2010 AEST (ABN Newswire) - Carpentaria Exploration Limited (
ASX:CAP) is pleased to announce successful initial second phase drilling at the Redan Perilya JV with Perilya Broken Hill Ltd (ASX:PEM), has been successful in confirming additional magnetite ironstone has been intersected.
Redan Drilling Update
Carpentaria has just completed drilling two areas in the Redan JV area designed to test for thickness, depth of cover and extent of magnetite mineralisation.
Eight RC drill holes have been completed for 1,673m at the Core and the "T" Anomalies.
Drilling was successful at the Core Anomaly, identifying significant thicknesses of additional magnetite ironstone and magnetite mineralisation. Field measurements of magnetic susceptibility, which relates directly to magnetite content, taken from RC10BRP011 confirms that another magnetic unit (Core Magnetic Unit 4) consists of over 100m combined thickness of magnetite ironstone and mineralisation to the end of hole. Assay results are awaited. Drilling last year confirmed mineralisation in the adjacent Core Magnetic Unit 3 was 130m thick. Drilling of Core Magnetic Unit One intersected relatively narrow mineralisation.
Initial drilling to test the 9km long "T" Anomaly was also successful and confirmed the geophysical interpretation and represents a new discovery with the intersection of a 200m thick sequence of magnetite ironstone. Field measurement of magnetic susceptibility and geological logging, show that significant thicknesses of magnetite mineralisation occur within this sequence. Assay results are awaited.
Further exploration planned for EL6979 includes drilling of higher amplitude areas of the "T" Anomaly, along and across strike testing of the Core Anomaly and drill testing the Fold Anomaly.
Iron Ore Mineralogical Test work
Composite samples of magnetite ironstone from Hawsons have been tested using a Scanning Electron Microscope to quantitatively assess the ease of liberation of magnetite at different particle sizes. The technique is known as Mineral Liberation Analysis (MLA).
The laboratory tests to date have shown that the ore is very soft, potentially requiring less than half the grinding energy of other iron-ore to produce a high grade magnetite concentrate. The MLA confirmed the excellent quality of magnetite at Hawsons returning between 68.4 to 72.4% Iron (Fe).
Magnetite iron deposits require grinding to a fine size to concentrate the iron. The finer the grind size and the harder the ore, the more energy and cost is required to liberate the magnetite to make a high grade iron ore concentrate.
The MLA of four samples from drill hole RC09BRP02 (115m @ 18.0% DTR @ 69.8% Fe DTRC) has shown that 96% to 98% of the magnetite is liberated at both 45 and 38 micron grinds which is approximately the size requirement for Australia's longest running magnetite operation at Savage River in Tasmania. Grinding to this size is also required to transport the magnetite iron ore in a slurry pipeline to the rail head.
The scanning electron microscope image shows electronically isolated particles of magnetite as red and silica as dark green at a grind size of around 38 microns (note the 100micron scale bar). The lack of other minerals attached to the magnetite demonstrates its excellent liberation characteristics.
The only significant contaminant present is quartz and very minor traces of carbonates. Quartz is removed in the normal concentrator regrinding process. The MLA was able to provide a complete scan of all minerals present in the Hawsons iron samples and confirmed that the magnetite concentrate has low levels of deleterious elements.
Redan Joint Venture - Vesting of 51% Interest
Carpentaria has now spent A$825,000 on EL6979 held by Perilya Broken Hill Pty Ltd., and have served notice to Perilya that it has completed the required expenditures to earn a 51% interest in the Joint Venture. Under the terms of the JV, Perilya can elect to contribute to project funding from now on or dilute to 25% by Carpentaria spending a further A$1.0m, at which stage Perilya can elect to contribute or retain a 1.5% NSR.
Executive Chairman Nick Sheard commented that "these results are very significant and confirm the conclusions from our original exploratory work that there is potential for a significant iron deposit that could be mined efficiently due its mineralogical properties, low cost processing potential, and proximity to infrastructure and the Broken Hill service industry."
Assay results for the Redan drilling program are expected in about four weeks and the next round of drilling is anticipated to begin in July/August.
For the complete Carpentaria Exploration announcement including figures, please view the following link:
http://www.abnnewswire.net/media/en/docs/63030-ASX-CAP-221246.pdf
About Carpentaria Resources Ltd
Carpentaria Resources Ltd (ASX:CAP) is focussed on delivering the best quality iron concentrates into the growing premium end of the iron ore market.
The Company aims to build a long term, low cost premium quality iron ore business from the development of its flagship asset, the Hawsons Iron Project, utilising existing infrastructure.
| ||
|
