공시 • Jul 18
Kincora Copper Limited Provides Exploration Update at Trundle Project in NSW Australia
Kincora Copper Limited provided an exploration update from recent drilling at the Trundle project situated at the brownfield Trundle project, located in the Macquarie Arc of the Lachlan Fold Belt in NSW, Australia. Kincora has expanded the mineralised system from 700m to now >1.3km at Trundle Park with the NE Gold zone and Dunns prospects open to the north with Southern Extension Zone and Botfield prospects open to the south set to further significantly expand the mineralised system. Southern Extension Zone discovery Ore grade copper and gold in skarn has been intersected within the Southern Extension Zone over at least a 330m SSE strike and 225m W-E wide system. Assay results for recent diamond core hole TRDD032 has returned a broad ore grade interval with the highest-grade primary mineralisation interval to date the Trundle project. In addition to intersecting prograde and structurally controlled strongly developed retrograde skarn alteration and mineralisation, common in all four holes to date within the SEZ, the high-grade interval in TRDD032 hosts a distinct and cemented chalcopyrite-pyrite-quartz-carbonate- muscovite-hematite vein cutting prograde garnet-pyroxene skarn. This high- grade interval returned 2m @ 12.6 g/t gold and 2.32% copper within a broader 34m @ 1.02 g/t gold and 0.24% copper. The four completed holes have confirmed a tabular, bedded, mineralised skarn system across multiple horizons with greater than 120m cumulative skarn widths in three of the four holes - see Tables 1-4. This is very encouraging, large and significant in the context of the geology and mineralisation within the Macquarie Arc, and assists to provide various vectors for follow up drilling. A causative porphyry intrusive source for this extensive mineralisation is yet to be confirmed. A higher grade and larger intrusive porphyry is Kincora's primary exploration target and interpreted to be on a lateral setting. Banded magnetite-pyroxene-brown garnet skarn in volcaniclastic sandstone @ 845.9-852.9m, with insert including massive chalcopyrite which returned 12.6g/t gold, 2.32% copper over 2m Working interpretation is of a cemented chalcopyrite-pyrite-quartz-carbonate-muscovite-hematite vein cutting prograde garnet-pyroxene skarn hosting the high-grade interval and insert of the massive chalcopyrite noted- close up at 850.1m With assay results to hand, various intervals of interest have been noted below this highly mineralised zone, also for petrology studies. These intervals include: high pyroxene to garnet ratios; intense calcic plagioclase alteration in rocks with relict porphyritic textures; and,intermediate-mafic chemistry. Garnet-pyroxene exoskarn have been noted in volcaniclasticwallrock adjacent to both these skarn bodies. While there is intense metasomatic alteration inand adjacent to these skarn bodies, there is not yet evidence for hydrothermal fluid exsolution.Most recent hole at the Trundle Park prospect, TRDD033, stepped out 225m east of the mineralised magnetite skarns intersected in TRDD032 and also south to test the southern strike potential of intrusions intersected to the north. While skarn hosted mineralization typical of the SEZ was intersected in TRDD033, which is approximately 660m west from hole TRDD031, it commenced at significantly shallower depth. was not as well developed and also, in part, hosted a zone of intense sheet-like veins with multiple minor felsic intrusions also noted in the hole. Analysis and interpretation is ongoing to determine if TRDD033 is correlated to the SEZ or the Eastern Zone at the Trundle Park prospect, Botfield prospect, or is a different zone in its own right. Trundle Park: A typical zoned Macquarie Arc intrusive system Kincora has made one new technical intrusive porphyry discovery at the Trundle Park prospect the equivalent to Northparkes Extensive mineralised footprint at surface across the wider adjacent prospect areas supports plenty of room for multiple new discoveries/deposits, and supports the concept of a cluster of intrusive porphyry targets along strike typical of both the Northparkes and Cadia mineralised systems Maiden Kincora air-core drillingKincora's first phase air-core drilling program at Trundle has returned favorable results at theDunn's North and Ravenswood South prospects. The Dunn's North and Ravenswood Southprospects are 3km north and 5.5km north-west respectively from the Trundle Park prospect. Three areas have been identified for a second phase drilling program seeking to follow up and expand zones with >600 ppm copper and/or >0.1 g/t gold. Permitting and scheduling for this second phase program, concurrent with air-core drilling at the Mordialloc prospect, is ongoing and also weather dependent. Review of vectors for follow up priority diamond drilling: Recent external reviews have assisted refined geological interpretations and reconcile grades in the Eastern and Central Zones at the Trundle Park prospect. Two examples of previously unidentified causative intrusives have been noted within a zoned, multiple phase, moderately developed, porphyry intrusive system typical of the Macquarie Arc. Such systems typically form in clusters of vertically extensive intrusive porphyry systems within big and highly altered footprints. The external reviews have also identified magnetite-rich, gold-dominant mineralisation in potassic-altered volcanic rocks at shallow depths. This region has been named the North-East Gold Zone, located adjacent to the Central Zone at Trundle Park, which hosts significantly anomalous near surface gold, over 400 x 150m and is open to east, north-east, north, west and at depth. Kincora's drilling to date at the Trundle Park prospect has expanded the mineralised footprint from 700m to 1300m with the NE Gold Zone target and Dunns' prospects open to the north, and the SEZ target and Botfield prospects open to the south, expected to further significant expand this. The width, alteration, bedding, structural interpretations and mineralisation of the respective multiple skarn zones within the SEZ, coupled with the alteration and mineralisation observed in the overlying volcanics from holes TRDD029-32 are providing insights to the interpreted fluid pathways from the targeted causative porphyry intrusion and source.