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Azure Minerals reports drill result from Oposura East Zone

Mining News - Published on Fri, 25 May 2018

Image Source: juniorminingnetwork.com
Azure Minerals has announced that it has started the mineral resource estimate for its flagship Oposura zinc-lead-silver project following receipt of final assay results from the resource drill-out of the East Zone.

A large zone of thick, high-grade mineralization, with an overall average grade approaching 20 % combined zinc-lead has been confirmed adjacent to and extending north and south of the existing underground exploratory mine workings of Tunnel D.

Highlight

• Further impressive assays received from final East Zone resource drill holes; including:
12.25m at 16.3 percent zinc-lead in OPDH-144
3.20m at 20.9 percent zinc-lead in OPDH-111
2.95m at 17.9 percent zinc-lead in OPDH-125
2.50m at 27.2 percent zinc-lead in OPDH-127
• Extensive high-grade mineralisation situated adjacent to underground mine development Tunnel D will allow for early, low cost access to high-value mineralised zone;
• Mineral resource estimate underway and expected to be completed in June 2018.

Azure’s managing director Mr Tony Rovira stated that “It is pleasing that the assay results from the final drilling into the East Zone at Oposura identified additional high-grade mineralisation close to the existing underground mine tunnels The extra drilling that the Company undertook into the East Zone has also significantly improved our understanding of the geometry of the deposit, enabling more detailed mine planning to be undertaken. These results provide the Company with scheduling optionality for early stage open pit and/or underground mining.”

East Zone mineralisation commences with surface outcrop on the eastern and southern sides of the hills and extends sub-horizontally at shallow depths over an area of approximately 400m (east-west) by 300m (north-south). Mineralisation and the mineralised zone remain unconstrained to the north and west. The northernmost drill section in the East Zone includes drill hole OPDH-115 which intersected 1.70m @ 13.3% Zn+Pb (8.2% Zn and 5.1% Pb) and further drilling is warranted to expand the mineral resource in this area.

Historical drilling in the 1970s also intersected mineralisation in the area between the East and West zones. This area is still to be drill tested by Azure and a drilling program is currently being designed.

The near-surface mineralisation within the eastern and southern areas of the East Zone is amenable to low strip ratio, open pit mining. Pre-production mining capital costs under such a scenario would be minimal and likely limited solely to working capital requirements.

Where the terrain rises to the west and north, mining is expected to be carried out usinga simple room and pillar underground mining method utilising industry-standard mechanised mining equipment. Considering the true thickness/height of the mineralisation and the robust rock stability, this method of underground mining is considered to be the most efficient and effective to maximise mining recovery at an optimal production rate.

As previously noted, high-grade mineralisation is located immediately adjacent to the existing underground development of Tunnel D, which is approximately 2.0m wide and 2.5m high. This tunnel could easily be stripped to accommodate modern mechanised mining equipment. Pre-production mine capital costs under this scenario would also be very low. Similarly, the lower level Tunnel 33 could be stripped and extended to access mineralisation that is situated below Tunnel D.

The flexibility presented by the geometry of the mineralisation at Oposura and the market interest in both a high-grade DMS product and/or high-quality zinc and lead-silver concentrates provides Azure with excellent optionality, with several low capital cost mining and processing options identified.

Source :

Posted By : Rabi Wangkhem on Fri, 25 May 2018
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