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CORE LITHIUM LTD — Regulatory Filings 2012
Jun 7, 2012
64737_rns_2012-06-07_2baac15d-ec01-4256-8852-f0e6524a06e0.pdf
Regulatory Filings
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ASX ANNOUNCEMENT
ASX : CXO
8[th] June 2012
High grade uranium and copper in outcrop at the Scott Lee Prospect Fitton Project, South Australia
HIGHLIGHTS
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3,370 ppm U3O8 (0.34% U3O8) assayed from outcrop sample at Fitton Project in S.A.
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High uranium sample located 200m from new copper sample grading +5%
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Uranium levels sampled above 100ppm for over 800m
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0.37 g/t gold was also identified on the western end of the same prospect.
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Drilling is planned for August/September 2012
Core Exploration Ltd (ASX:CXO) has identified very high levels of uranium and copper in outcrop on its 100% owned Fitton Project (EL 4569) located 25km north of the Beverley uranium mine in northern South Australia. The zone of shearing related to mineralisation has been mapped for over 2,000m at surface on the newly named Scott Lee prospect.
A sample of chloritised schist within a shear zone contained 2,858 ppm uranium (3,370ppm U3O8 or 0.34% U3O8), which is a four-fold increase in the previous highest uranium value identified.
In addition, a number of new samples contained highly anomalous uranium above 100ppm for a strike length of over 800m (Table 1, Figures 1 & 2).
A number of samples from the same shear zone graded above 1% copper over a strike length of 150m (Table 1, Figures 1 & 2).
High levels of uranium and copper in the new and previous rock chip samples correlate well with results from previous soil surveys. This relationship between anomalism in the soil data and rock chip samples provides scope for further increases in the footprint of mineralisation through future sampling (Figure 2).
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected] www.coreexploration.com.au
Previously unidentified gold anomalism (0.91 g/t gold) in a rock chip sample of quartz rich gossan 2.2km southwest of the high uranium and copper samples is also of interest and worthy of further exploration. Samples with elevated gold of (up to 0.37 g/t) are associated with high uranium and copper at the Scott Lee prospect (Table 1).
Core is encouraged by the continuing success in improving the prospectivity of the Fitton Project through cost effective exploration techniques such as mapping, rock chip sampling, soil sampling and ground magnetics in preparation for targeted first pass drill programs.
Background
The Fitton Project covers 106km² adjacent to the Mt Painter Inlier. The region is well known for its multi-metallic breccia complexes and large-scale secondary uranium occurrences at Beverley and Beverly Four-Mile (Figure 2).
It is interpreted that a series of multi-directional zones of fracturing in the host granite have been intruded by a later mafic dyke which have been the focus of shearing and uranium mineralization.
The northern part of the Fitton project area covers areas of Radium Creek Metamorphics and other prospective host rocks within the Mt Painter Inlier. The central part of the tenement contains uraniferous megacrystic granites with chloritised shear zones that are interpreted to represent original mafic dykes. These shear zones have been intensely altered that appear to have focused a mineralizing fluid rich in copper and uranium with minor gold also identified in the latest sampling.
Numerous smaller shears occur within a larger shear zone and vary individually in width from a metre to over 25 metres. The levels of uranium and copper, based on sampling to date from these shear zones, vary substantially. The presence of this mapped surface mineralisation and alteration may or may not extend at depth and this can only be confirmed by drilling which is planned in the coming months.
Further work
Magnetite was identified in the mapping to be associated with parts of the Scott Lee prospect. A ground magnetic survey was conducted, the data is currently being processed and interpreted to target further mineralisation under cover.
Follow-up mapping, sampling and detailed rock chip sampling of the entire length of the mineralized shear zone is planned in late June.
Drilling of priority targets defined by these surveys is planned for August/September.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected] www.coreexploration.com.au
| Name | Zone | Easting | Northing | Sample | **Cuppm ** | **Uppm ** | U3O8ppm | **Aug/t ** | |
| MP0009 | 54J | 365712 | 6686800 | Rock chip | 155 | 51.29 | 60.48 | X | |
| MP0010 | 54J | 365699 | 6686831 | Rock chip | 103 | 624.43 | 736.33 | X | |
| MP0011 | 54J | 365552 | 6686859 | Rock chip | 16 | 83.59 | 98.57 | X | |
| MP0011 | 54J | 365455 | 6686935 | Rock chip | 105184 | 121.37 | 143.12 | 0.12 | |
| MP00451 | 54J | 366351 | 6688378 | Rock chip | 107 | 2.39 | 2.82 | 0.01 | |
| MP00459 | 54J | 365842 | 6687056 | Rock chip | 16 | 120.99 | 142.67 | X | |
| MP00467 | 54J | 365306 | 6686951 | Rock chip | 200 | 157.41 | 185.62 | X | |
| MP00473 | 54J | 365336 | 6686984 | Rock chip | 33 | 132.25 | 155.95 | X | |
| MP00474 | 54J | 365442 | 6686928 | Rock chip | 963 | 35.31 | 41.64 | X | |
| MP00476 | 54J | 365458 | 6686931 | Rock chip | >50000 | 77.44 | 91.32 | 0.06 | |
| MP00477 | 54J | 365455 | 6686938 | Rock chip | 143 | 5.87 | 6.92 | X | |
| MP00479 | 54J | 365497 | 6686933 | Rock chip | 148 | 3.3 | 3.89 | X | |
| MP00480 | 54J | 365566 | 6686926 | Rock chip | 21718 | 426.96 | 503.47 | 0.08 | |
| MP00481 | 54J | 365556 | 6686927 | Rock chip | 185 | 15.01 | 17.70 | X | |
| MP00482 | 54J | 365657 | 6686878 | Rock chip | X | 2857.83 | 3369.95 | X | |
| MP00486 | 54J | 366737 | 6686592 | Rock chip | 234 | 2.2 | 2.59 | X | |
| MP00492 | 54J | 365857 | 6686686 | Rock chip | 571 | 239.7 | 282.65 | X | |
| MP00493 | 54J | 363551 | 6685728 | Rock chip | 680 | 10.55 | 12.44 | 0.91 | |
| MP00496 | 54J | 365105 | 6686983 | Rock chip | 219 | 499.34 | 588.82 | 0.37 | |
| MP00497 | 54J | 365214 | 6686964 | Rock chip | 64 | 62.43 | 73.62 | X | |
| MP00498 | 54J | 365312 | 6686960 | Rock chip | 111 | 268.33 | 316.41 | X | |
| MP00499 | 54J | 365406 | 6686937 | Rock chip | 160 | 37.06 | 43.70 | X | |
| MP00500 | 54J | 365450 | 6686924 | Rock chip | 19862 | 86.5 | 102.00 | 0.06 | |
| MP00502 | 54J | 365555 | 6686934 | Rock chip | 19257 | 217.06 | 255.96 | 0.02 | |
| MP00503 | 54J | 365500 | 6686931 | Rock chip | 7933 | 13.71 | 16.17 | X | |
| MP00512 | 54J | 365619 | 6686903 | Rock chip | 103 | 9.93 | 11.71 | X |
Table 1: Table of all rock chips samples collected by Core Exploration within EL 4569 with anomalous copper, uranium and/or gold values.
When samples contain either Copper > 100ppm or Uranium > 50ppm or 100ppb/gold (From a total sample set of 69 samples). Au: FA25//AA Lead Collection Fire Assay: U: 4A/MS 4 Acid Digest Mass Spectrometry: Cu: 4A/OE 4 Acid Digest Inductively Coupled Plasma Opitical Emission Spectrometry. Of the 69 rock samples collected to date the range of values for copper vary from below detection (1ppm) to 10.5%, uranium varies from 0.4 ppm to 2858 ppm and gold varies from below detection (0.01 ppm to 0.91ppm)
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected] www.coreexploration.com.au
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Figure 1: Map of mineralised samples from the Scott Lee prospect overlain on uranium anomalism in soils image, EL 4569, Fitton.
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Figure 2: Inset map of mineralised samples from the Scott Lee prospect on EL 4569, Fitton Project.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected] www.coreexploration.com.au
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Figure 4. In situ sample from shear zone at the Scott Lee prospect. Sample assayed 3,370 ppm U3O8 (0.34% U3O8). The s pectrometer value in photo ( counts per second) is used as an indicator of uranium value.
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Figure 5. Photo of malachite rich (green copper carbonate secondary mineral) sample that returned a >50000 ppm copper value (>5% Cu) from Scott Lee prospect.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected]
www.coreexploration.com.au
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Scott Lee Prospect
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Figure 5. Location of Scott Lee Prospect and Fitton Project (EL 4569) and uranium occurrences in the region, northern South Australia.
| For further information please contact: | |
|---|---|
| Stephen Biggins | John Field |
| Managing Director | Field Public Relations |
| Core Exploration Ltd | 08 8234 9555 |
| [email protected] | [email protected] |
The information in this report has been compiled by Stephen Biggins (BSc(Hons)Geol, MBA) as Managing Director of Core Exploration Ltd and who is a member of the Australasian Institute of Mining and Metallurgy and is bound by and follows the Institute’s codes and recommended practices. As a Competent Person, he has a minimum of 5 years relevant experience in the style of mineralisation and types of activities being reported and has given written consent to the above report in the form and context in which it appears.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected]
www.coreexploration.com.au