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Hannan Samples 0.8 Metres @ 2.8% Copper and 14 G/T Silver From New Copper-Silver Zone at the San Martin Project in Peru

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Hannan Samples 0.8 Metres @ 2.8% Copper and 14 G/T Silver From New Copper-Silver Zone at the San Martin Project in Peru




Hannan Metals Limited  (TSX-V: HAN) (OTCPK: HANNF) provides assay results from a new copper-silver discovery located 2 kilometres south from known mineralization at Hannan’s 100% owned Sacanche mining concessions at the San Martin sediment-hosted copper-silver project in Peru (Figure 1).




  • Results from 5 separate outcrops sampled over 400 metres of strike have been received from a new discovery area. New results include:
    • 0.2 metres @ 6.9% copper and 32 g/t silver (partially sampled);
    • 2.5 metres @ 0.8% copper and 14 g/t silver (one bulk sample);
    • 0.8 metres @ 2.8% copper and 14 g/t silver (partially sampled);
  • Additional systematic sampling is required to determine the full width of mineralization (Figures 2, 5 and 6). The new results are located 2 kilometres south of a previously reported channel sample that assayed 3 metres @ 2.5% copper and 22 g/t silver including 0.5 metres @ 4.4% copper and 61 g/t silver at a 1% copper lower cut (Figure 2);
  • The style of copper and silver mineralization and the stratigraphic position is consistent with previously defined copper silver mineralization found at the top of the Sarayaquillo Formation within the 110 kilometres of strike of Hannan’s 100% owned mining concessions;
  • Mapping of outcrops and boulders in creeks now define a zone that shows a level of continuity at multiple points over 2 kilometres (Figure 5) in the southern Sacanche mining concession area;
  • The analogue style for mineralization at San Martin is the Kupferschiefer in Poland where KGHM Polska Miedz’s (“KGHM”) three copper-silver sediment-hosted mines are the 6th largest copper producer and the leading silver producer in the world.  In 2018 KGHM produced 30.3 Mt of ore at a grade of 1.49% copper and 48.6 g/t silver from a mineralized zone that averages 0.4 to 5.5 metres thickness.


Michael Hudson, CEO, states: “Demonstrating continuity of mineralization at multiple points within a 2 kilometre trend over potentially economic widths is the key next step in the evolving definition of the basin-scale sediment-hosted stratiform copper-silver system at San Martin. Although exploration remains at its early stages, the predictability and continuity of grades at these scales is considered an extremely positive development.”


Mineralization is located in the western fold limb of an open asymmetrical anticline which dips 25 degrees to the west (Figure 3 and 4).  The new discoveries are located immediately upstream from a creek where 10 mineralized grab samples from boulders assayed between 5.0% copper and 36 g/t silver to 0.4% copper and 3.9 g/t silver, and averaged 2.7% copper and 16.9 g/t silver. In addition, a new reduced host rock was discovered stratigraphically higher than reported above. The exposed zone was leached, 1 metre wide with minor copper oxides and assayed 1 metre @ 0.1% Cu (Figure 2). Channel samples are considered representative of the in-situ mineralization samples and sample widths quoted approximate the true width of mineralization, while grab (boulder) samples are selective by nature and are unlikely to represent average grades on the property.


Field discoveries were made in the days before field work was suspended due to the Covid-19 lockdown during mid-March. Samples were submitted to a geochemical laboratory in Lima last week.  Therefore, systematic sampling and trenching over the new discovery area has not yet been carried out. The most strongly mineralized part of the host rock is only observed in 3 out of 5 outcrops (Figure 5). Further systematic sampling and mapping of the mineralized sequence to the south and north will recommence over the short term when it is deemed safe for field teams and all stakeholders. 


Sediment-hosted stratiform copper-silver deposits are among the two most important copper sources in the world, the other being copper porphyries.  They are also a major producer of silver.  According to the World Silver Survey 2020 KGHM Polska Miedz’s (“KGHM”) three copper-silver sediment-hosted mines in Poland are the leading silver producer in the world with 40.2Moz produced in 2019. This is almost twice the production of the second largest producing mine. The Polish mines are also the sixth largest global copper miner and in 2018, KGHM produced 30.3 Mt of ore at a grade of 1.49% copper and 48.6 g/t silver from a mineralized zone that averages 0.4 to 5.5 metres thickness.


About Hannan Metals Limited  


Hannan Metals Limited is a natural resources and exploration company developing sustainable and ethical resources of metal needed to meet the transition to a low carbon economy. Over the last decade, the team behind Hannan has forged a long and successful record of discovering, financing and advancing mineral projects in Europe and Peru.


Mr. Michael Hudson FAusIMM, Hannan’s Chairman and CEO, a Qualified Person as defined in National Instrument 43-101, has reviewed and approved the technical disclosure contained in this news release.


Figure 1. (CNW Group/Hannan Metals Ltd.)



Figure 2. (CNW Group/Hannan Metals Ltd.)



Figure 3. (CNW Group/Hannan Metals Ltd.)



Figure 4 and 5. (CNW Group/Hannan Metals Ltd.)



Figure 6. (CNW Group/Hannan Metals Ltd.)


Posted June 23, 2020

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