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CORE LITHIUM LTD — Regulatory Filings 2013
Sep 9, 2013
64737_rns_2013-09-09_953857de-242f-4c33-8152-2136b622a360.pdf
Regulatory Filings
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ASX ANNOUNCEMENT ASX : CXO
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th 10 September 2013
Highest ever silver grades at Blueys Prospect, NT
HIGHLIGHTS
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New surface rock chips at Blueys assay up to:
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4.1 kilograms per tonne silver (4,065 g/t)
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5.5% copper
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25% lead
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Widespread silver in rock chips at large Inkheart Prospect
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Awaiting infill soil results from Inkheart and Blueys
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Results are indication of significant mineralisation at depth
The highest ever silver grades have been returned by Core Exploration Ltd’s (ASX: CXO) latest rock chips sampling program at Blueys and nearby Inkheart Prospect within the Company’s Albarta Project in the Northern Territory.
Surface rock chip samples from Blueys graded up to 4,065 g/t silver (Ag), 5.5% copper (Cu) and 25% Lead (Pb) (Table 1).
Recent mapping and rock chip sampling at Blueys has identified a broad zone of pervasive stock-work veining associated with malachite and azurite (copper) and galena (lead/silver) minerals at surface (Figures 1 & 2). Surface mineralisation and widespread veining coincides with a sizeable soil anomaly (500m x 250m) greater than 1,000ppb Ag, including a peak silver in soil value of 25,250ppb Ag at Blueys (Figure 3).
In addition, Core’s first rock chip sampling results at the Inkheart Prospect north of Blueys have confirmed anomalous silver levels at surface. Core’s geological mapping has identified a metal rich gossan coinciding with the newly-identified 1,500m by 250m area of high (greater than 1,000ppb) silver in soil anomaly (with a peak of 19,552ppb Ag) (Figure 3).
Core believes that these high silver in soil and rock chip results are an indicator of significant mineralisation at depth. Results from Blueys and Inkheart Prospects continue to elevate the prospectivity to a level comparable to early stage exploration in areas such as Investigator Resources Ltd’s (ASX:IVR) flagship Paris Project in S.A., where continued high grade silver is intersected at depth.
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 Rock chip samples containing malachite/azurite (copper) mineralisation Blueys Prospect, NT
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Figure 2 Rock chip samples containing galena (silver and lead) mineralisation Blueys Prospect, NT.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected] www.coreexploration.com.au
Geology
Core’s mapping has identified that the reactive carbonate rocks (Neoproterozoic Bitter Springs Formation), common at the Blueys Prospect, contain visual copper carbonate minerals (malachite and azurite), lead and silver minerals (argentiferous galena). The new high silver samples were sampled from stockpiled mineralised material to determine if the high silver grades were associated with lead bearing sulphides (argentiferous galena).
The company considers the reactive carbonate characteristics of the Bitter Springs Formation to be an ideal host unit for mineralisation. At the Blueys Prospect the silver soil anomalies match the location of the Bitter Springs Formation wrapping around basement granites and amphibolites (Figure 3).
The Blueys and Inkheart Prospects occur at equivalent geological settings, within the Neoproterozoic Bitter Springs Formation at the contact with Proterozoic basement. The Inkheart Prospect has a dominant north-east orientation consistent with the regional structural trend.
Next Steps
Results from infill soils surveys conducted a Blueys and Inkheart are expected to be received in mid-September.
Induced Polarisation (IP) geophysical surveys are planned to commence next month over the geological and geochemical targets defined at Blueys and Inkheart and prioritised for drilling.
Further geological mapping and sampling will continue at Blueys and Inkheart, in addition to other prospects within Core’s package of tenements in the Albarta Project.
Albarta Project Background
The Blueys and Inkheart Prospects are within Core’s Albarta Project that covers over 2,000km[2] of the newly recognised, highly prospective IOCG Aileron Province, 100km NE of Alice Springs in the NT. Core’s tenements include a number of significant copper (+ silver) occurrences (Figure 4).
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 3. New and previous rock-chip sample locations overlain on silver in soil image, Blueys and Inkheart Prospect, Albarta Project NT.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected] www.coreexploration.com.au
| SampleID | Easting | Northing | Ag g/t | Cu_ppm | Pb_ppm | |||
| BLU011 | 474583 | 7400497 | 4.01 |
kg/t | 5.48% | 1,082 |
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| BLU012 | 474645 | 7400491 | 1.15 |
kg/t | 5,473 | 24.9% |
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| BLU013 | 474645 | 7400491 | 1.26kg/t |
2,531 | 23.4% |
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| 1101 | 474811 | 7401354 | 29.52 |
1,732 | 4,107 |
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| 1102 | 474807 | 7401352 | 28.73 |
306 | 3,070 |
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| 1103 | 474985 | 7401617 | 7.99 | 473 | 608 |
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| 1104 | 475001 | 7401602 | 3.12 | 24 | 235 |
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| 1105 | 474998 | 7401588 | 47.33 |
111 | 166 |
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| 1106 | 475208 | 7401597 | 2.99 | 32 | 1,077 |
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| 1107 | 475208 | 7401597 | 1.95 | 55 | 670 |
|||
| 1108 | 475231 | 7401595 | 3.3 | 186 | 109 |
|||
| 1109 | 475261 | 7401589 | 1.35 | 63 | 134 |
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| 1110 | 475268 | 7401579 | 0.64 | 85 | 19 |
|||
| 1111 | 475303 | 7401838 | 0.14 | 10 | 55 |
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| 1112 | 475393 | 7401620 | 0.57 | 22 | 53 |
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| 1113 | 475377 | 7401611 | 6.12 | 34 | 112 |
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| 1114 | 474340 | 7401538 | 0.65 | 7 | 28 |
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| 1115 | 475356 | 7401508 | 0.46 | 5 | 70 |
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| 1116 | 474758 | 7401256 | 4.4 | 76 | 263 |
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| 1117 | 474656 | 7401200 | 2.37 | 348 | 1,176 |
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| 1118 | 474508 | 7401111 | 1.02 | 236 | 75 |
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| 1119 | 474514 | 7401112 | 0.74 | 140 | 93 |
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| 1120 | 474523 | 7401104 | 1.47 | 255 | 32 |
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| 1121 | 474522 | 7401108 | 0.75 | 127 | 39 |
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| 1122 | 474634 | 7401092 | 1.91 | 648 | 17 |
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| 1123 | 474674 | 7401116 | 1.18 | 152 | 11 |
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| 1124 | 474769 | 7401155 | 0.79 | 24 | 143 |
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| 1125 | 474247 | 7400455 | 7.83 | 103 | 1,792 |
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| 1126 | 474200 | 7400524 | 3.64 | 224 | 175 |
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| 1127 | 474171 | 7400460 | 2.45 | 25 | 49 |
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| 1128 | 473343 | 7401980 | 0.13 | 20 | 90 |
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| 1129 | 473342 | 7402064 | 0 | 9 | 201 |
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| 1130 | 473600 | 7401937 | 0 | 32 | 154 |
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| 1131 | 473927 | 7400766 | 0.07 | 110 | 162 |
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| 1132 | 474164 | 7400475 | 8.68 | 147 | 126 |
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| 1133 | 474109 | 7400476 | 43.16 |
460 | 27 |
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| 1134 | 474093 | 7400341 | 1.61 | 5 | 16 |
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| 1135 | 474453 | 7400499 | 12.85 |
693 | 53 |
Table 1. All recently collected surface rock chip results from Blueys and Inkheart Prospects, Albarta Project, NT.
Ag: 4A/MS 4 Acid Digest Mass Spectrometry: Cu: 4A/OE 4 Acid Digest Inductively Coupled Plasma Optical Emission Spectrometry. The presence of this mapped surface mineralisation and alteration may or may not extend at depth and this can only be confirmed by drilling
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected]
www.coreexploration.com.au
For further information please contact:
Stephen Biggins Managing Director Core Exploration Ltd 08 7324 2987 [email protected]
John Field Field Public Relations 08 8234 9555 [email protected]
The information in this report that relates to Exploration Results and Mineral Resources is based on information compiled by Stephen Biggins (BSc(Hons)Geol, MBA) as Managing Director of Core Exploration Ltd 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. He has sufficient experience which is relevant to the styles of mineralisation and types of deposits under consideration and to the activities being undertaken to qualify as a Competent Person as defined in the 2004 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr. Biggins consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
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Figure 4. Core Exploration’s Albarta Project and other copper exploration projects in the Northern Territory.
A Level 2, 143 Hutt St, Adelaide SA 5000 | T (08) 7324 2987 | F (08) 8312 2002 | E [email protected]
www.coreexploration.com.au