Multiple Stacked High-Grade Lead-Silver-Zinc Zones Discovered At Santander Zinc Mine

 

VANCOUVER, BC - Trevali Mining Corporation reported initial results from its 2016 underground exploration drill program that tested recently discovered mineralization in the hanging wall to the Magistral North deposit at its Santander zinc mine in Peru. All drill holes intersected very significant sulphide mineralization both within the main Magistral North body as well as in the newly discovered Oyon Mantos. The intercepts are near existing mine infrastructure and will be quickly added into the near-term (2016-2017) mine plan. Mineralization in both the Magistral North deposit and the new Oyon Mantos remains open for expansion and drilling is in progress.

In December 2015 a new thick zone of vein and replacement mineralization was drill-intersected in the hanging wall of the main Magistral North deposit (DDH MN-127 - 19.3 meters of 4.3% Zn, 1.99% Pb & 3.5 oz/t Ag. The intercept was interpreted to represent the down-dip continuation of a sub-parallel, silver-rich Rosa-style structure penetrating and replacing what is interpreted as Oyon Formation sediments, heretofore considered an unfavorable host unit, in the hanging wall of Magistral North deposit.

Follow-up expansion and definition drilling reported here has begun to define a new mineralized zone termed the "Oyon Mantos" in the hanging wall to the main Magistral North deposit. The Oyon zone contains multiple stacked lenses (or antos) of replacement mineralization and veining that vary from 1-to-10 meters thick, have a modeled strike length of approximately 90 meters and a currently defined dip length of approximately 150 meters. In general, average grades for many of the defined intercepts are higher than typical Santander mill feed grades.

The Mantos are proximal-to-immediately-adjacent to the main Magistral North deposit and close to existing and future planned mine development. Consequently minimal additional work will be required to begin adding value (feed) to the Santander mill. Both the Magistral North Zone and emergent Oyon Mantos remain open and expansion / definition drilling is ongoing.