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Rumble Resources doubles footprint at Chinook zinc-lead discovery with strong new results

Around 2,500 metres of a major 30,000-metre RC and DD drilling program has been completed at Earaheedy, with drilling set to begin at higher-grade zones once the overall scale of the Chinook prospect is delineated.

Rumble Resources Ltd -
RTR says “very significant” widths of oxide zinc-lead-manganese-silver mineralisation were encountered at a shallow depth.

Rumble Resources Ltd (ASX:RTR) (FRA:20Z) has increased the footprint at Chinook zinc-lead discovery of the Earaheedy Project in Western Australia by 125% to 3 kilometres by 1.8 kilometres during a 30,000-metre reverse circulation (RC) and diamond drilling program.

Assays received for the first four step-out holes have increased the zinc-lead-manganese-silver mineralisation footprint 700 metres in a southwest to northeast direction, and another 900 metres in a southeast to northwest direction.

As a result, the exploration target range has also increased to 100 million-120 million tonnes, with mineralisation remaining open in all directions.

Once boundaries of the mineralisation footprint are defined, drilling will then focus on the inferred feeder structures which contain near surface higher-grade zinc-lead-manganese-silver mineralisation.

The second and third RC drill rigs are due to arrive on site over the coming weeks, which will accelerate the scoping drilling and commencement of targeting of high-grade feeders.

"Hallmarks of a world-class discovery"

RTR managing director Shane Sikora said: “It’s important to understand we aren’t infill drilling, and the key first step we are currently undertaking to advance the Chinook zinc-lead discovery consists of broad-spaced, step-out drilling into new untested areas looking to find the edges of the mineralisation.

“What’s incredible is the scale unfolding at Chinook, which continues to showcase all the hallmarks of a large-scale, world-class discovery.

“Not only have we expanded Chinook’s footprint, at this early stage of our ongoing 30,000 metres drill program we have already uncovered some exciting new developments.

“We are just at the start of unlocking this massive base metal system and already we have the confidence to increase the exploration range to 100-120 million tonnes as a result of the growing mineralisation footprint.

“The potential of what we could ultimately uncover as we test the outer boundaries of the mineralisation and then start to focus on the inferred feeder zones hosting the higher-grade zinc-lead-manganese-silver mineralisation is extremely exciting.”

Shares have been as much as 11.4% higher to 54 cents intra-day while RTR's market cap was approximately $298.2 million pre-open.

Drilling results 

Latest drilling results from four RC drill holes demonstrate substantial widths of near-surface oxide zinc-lead-manganese-silver mineralisation such as:

  • 49 metres at 2.45% zinc + lead from 18 metres, including 38 metres at 2.78% zinc + lead, 4.6% manganese and 2.9 g/t silver from 23 metres with a zone of 9 metres at 3.67% zinc + lead, 7.44% manganese, and 3.6 g/t silver from 46 metres.

The first RC drill-hole, 500 metres northwest along strike from previous northwest drilling returned a significant width of strong zinc-lead-silver sulphide mineralisation:

  • 52 metres of 1.78% zinc + lead mineralisation from 126 metres to the end of hole, including 8 metres at 3.43% zinc + lead and 5.1 g/t silver from 129 metres with a zone of 5 metres at 4.21% zinc + lead and 3.7 g/t silver from 131 metres.

A further 13 RC drill holes have been completed in the ongoing current round of drilling and all drill holes are mineralised based on initial pXRF analysis. Sampling is ongoing and assays are pending.

Rumble’s orientation gravity program has also been completed over the Chinook discovery, confirming multiple northwest to NNW gravity trends that correlate with the inferred multiple feeder structures and provide a valuable targeting tool for further high-grade mineralisation.

Ongoing exploration steps

Continuous RC and diamond drilling scoping out the extent/limits of the zinc-lead-manganese-silver mineralisation along strike and down dip at the Chinook prospect;

  • One RC and diamond drill rig on-site at present, with the second and third RC rig to arrive over the coming weeks;
  • A trial sonic drilling program to focus on twinning drill-holes EHRC044, EHRC050 and EHRC061 to improve recovery of cored material; and
  • A gravity survey is planned along strike between Chinook and Magazine to aid in targeting the prospective zinc-lead-manganese-silver mineralisation.

Quick facts: Rumble Resources Ltd

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