Today's assays come from eight step-out holes from the West, Central, Camp and East Ayawilca areas.
Highlights included 6.9 metres at 20% zinc at the West Ayawilca zone and 7.2 metres at 22.7% zinc at South Ayawilca.
In addition, two high-grade zinc intersections were encountered at the newly named Camp area in the gap between West and Central Ayawilca, including 5.7 metres grading 14.9% zinc.
"Tinka continues to expand the footprint of the zinc mineralization at Ayawilca with its 2018 stepout drill program," said Dr Graham Carman, Tinka's president and chief executive.
"The new high-grade zinc intersections in the Camp area, where we carried out very limited drilling in the past, should allow us to connect the plus-200-metre gap between mineral resources at West and Central Ayawilca.
"Of particular interest is that high-grade zinc mineralization in this area was encountered within a repeated limestone under a phyllite ledge, a setting similar to that found in hole A18-129 which intersected exceptional plus 40 per cent zinc grades.
"The repeated and mineralized limestone occurs in multiple locations at the project including at the Camp and West Ayawilca. It is possible this deeper mineralization is more widespread than is currently recognized, as holes at the project in the past were typically stopped almost immediately on hitting phyllite."
Carman told investors that the main focus for exploration in coming weeks was to test the repetition for mineralized limestones at West and Central Ayawilca and to test for extensions to the mineralization along strike at South and Central Ayawilca.
"It appears that number of previous holes at West and Central Ayawilca were not drilled sufficiently deep enough to test for these possible repetitions. Tinka is studying which are the priority holes to deepen for later in the 2018 drill program," he said.
Tinka already holds a Ayawilca zinc zone inferred resource of 42.7mln tonnes at 6% zinc, 0.2% lead, 17 g/t (grams per ton) silver and 79 g/t (grams per ton) indium, and a tin zone inferred mineral resource of 10.5mln tonnes at 0.63% tin, 0.23% copper and 12 g/t (grams per ton) silver.