Trevali Mining Corporation (TSX:TV) announced results of an additional ten drill holes from its 2015 exploration program designed to test the deeper levels, below the currently defined resources and mine plan, of the Magistral Central and South deposits at its Santander Zinc mine in Peru.

As quoted in the press release:

All ten drill holes intersected significant zinc-leadsilver mineralization with the majority returning zinc grades materially higher, ranging from approximately plus-25- to-150%, than those currently being exploited (Table 1). Borehole SAN-0215 intersected a new zone of thick semimassive to massive sulphide replacement mineralization in the footwall of Magistral Central zone which requires additional drill-testing. All targets remain open for expansion and drilling is ongoing:




The latest phase of drilling focused on extending the known mineralization in the area below and between the Magistral Central and South zones in addition to testing the uppermost portions of a large downhole electromagnetic geophysical anomaly that is interpreted to indicate a merging of the Magistral zones at depth (Figure 1 and News Release October 24, 2011 for details). Drill holes SAN-208 through to SAN-215 all successfully intersected highgrade, zinc-dominated massive-sulphide mineralization and clearly demonstrate the union of the Magistral Central and South zones at these levels.

Base metal grade is increasing with depth and mineral system analysis suggests a geological setting in the upper midlevels of a large-to-very-large (intrusion related) carbonate replacement system with very significant depth and lateral potential remaining for testing. Drilling from both surface and underground is ongoing at Magistral Central, South and Fatima deposits. Underground drilling at Magistral North (below the 4370 level) is planned to commence in Q4.


The New Zone located in the footwall of the Magistral Central Zone is characterized by massive carbonate replacement by coarse-grain sulphide mineralization (Figure 2). Massive to semi-massive low-iron sphalerite and pyrrhotite mineralization is hosted in epidote-garnet skarnified limestone. The style of mineralization is similar to the Santander Pipe deposit located 2-km to the south (that also remains open for expansion at depth). This New Zone remains open to the north, south, east, and to depth, and additional drilling is required to determine its ultimate size potential.


Trevali Mining President and CEO, Dr. Mark Cruise, stated:

The Company is pleased with the ongoing exploration successes at Santander where the team continues to demonstrate the ability to convert exploration success into demonstrable value by adding mill feed in a timely manner. We look forward to continued exploration successes on the large and under-explored Santander property where all the principal Magistral and associated zones and prospects including the former Santander Pipe remain open for expansion, in addition to several earlier-stage high-priority targets on located on the productive Magistral Trend.

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