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Cohiba Minerals receives positive results from drilling across Warriner Creek Project in Gawler Craton

Cohiba Minerals (ASX:CHK) reports it has received positive results from drilling across its Warriner Creek Project, which comprises 2 tenements covering a combined area of 346km-square over strategic IOCG targets in the Gawler Craton.

At Warriner Creek East, drillhole CHK22WCE01 returned some anomalous rare earth element (REE) results which were converted to total rare earth oxides (TREO). The following results occurred 2m @ 1,532ppm TREO from 504 – 506m, and 15m @ 853ppm TREO from 597 – 612 m including 2m @ 1,014ppm TREO from 604m.

Cohiba reports that Warriner Creek West, drillhole CHK22WCW01 returned one ‘low-grade’ copper result and one anomalous REE result which was converted to TREO. The results included 1m @ 0.93% Cu from 128 – 129m, and 2m @ 1,053ppm TREO from 139 – 141m.

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The Warriner Creek prospects are located in the high metamorphic temperature Mount Woods Domain which is a sparsely outcropping domain in the far north Gawler Craton. IOCG (iron ore-copper-gold) style deposits have been discovered in this domain, such as Peak Iron’s Peculiar Knob and Cu River Mining’s Cairn Hill.

Cairn Hill was mined as a magnetite iron ore deposit with accessory copper and gold, and Peculiar Knob is mined as a hematite iron ore deposit. Immediately south of the Mount Woods Domain and 20km south of Warriner Creek West lies Oz Mineral’s Prominent Hill copper-gold mine.

Addressing the drilling program, Cohiba CEO, Andrew Graham said: “The Warriner Creek Project granted Cohiba the opportunity to drill test two IOCG targets that were identified from historical magnetic and gravity surveys.

Whilst there were some anomalous rare earth element intersections and a low-grade copper result these were neither persistent enough nor of sufficient grade to warrant the continuation of the Farm-In Agreement with Tigers Dominion and the ease of the working relationship.

“Cohiba will continue to explore additional opportunities as it seeks to expand its footprint in the Gawler Craton as part of its over-arching IOCG strategy”

Cohiba will continue to explore additional opportunities as it seeks to expand its footprint in the Gawler Craton as part of its over-arching IOCG strategy.”

Targeting at Warriner Creek East focussed on an isolated slightly offset magnetic and gravity high, with a scale consistent with a Carrapateena sized geophysical anomaly.

Drilling intersected complexly deformed high temperature meta-sediments, and into mafic intermediate diorite with strong magnetite intrusive at depth. The strongly magnetic diorite is presumed to be the cause of the magnetic geophysical signature.

Cohiba notes that the fact that the gravity anomaly is offset from the magnetic signature presents the possibility that another dense body is the cause of the gravity anomaly. Brecciation and alteration of IOCG style was not observed.

Meanwhile, Warriner Creek West is adjacent to the Peak Iron IOCG related iron ore mine, and near to Oz Minerals Prominent Hill copper-gold mine.

Targeting focused on a shallow magnetic ridge running approximately east-west through the tenement. Drilling intersected high temperature meta-sediments and meta-granites. A south dipping contact from sandy dominant to muddy dominant meta-sediments exhibited a minor mafic dyke in CHK22WCW01 and a healed breccia in CHK22WCW02 with minor magnetite alteration, and trace chalcopyrite and pyrite.

It is believed that this contact and mafic intrusions along the contact are the cause of the magnetic anomaly.

Write to Adam Orlando at Mining.com.au

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Written By Adam Orlando
Mining.com.au Editor-in-Chief Adam Orlando has more than 20 years’ experience in the media having held senior roles at various publications, including as Asia-Pacific Sector Head (Mining) at global newswire Acuris (formerly Mergermarket). Orlando has worked in newsrooms around the world including Hong Kong, Singapore, London, and Sydney.