Base Metals


Trevali Mining Corporation (TSX:TV) announced results from four new drill holes of its ongoing 2016 underground exploration drill program at the Santander zinc mine in Peru.

Trevali Mining Corporation (TSX:TV) announced results from four new drill holes of its ongoing 2016 underground exploration drill program at the Santander zinc mine in Peru. The aim of the current drilling is to test recently discovered mineralization in the hanging wall of the Magistral North deposit.
As quoted in the press release:

Drill holes continue to intersect multiple stacked mineralized massive sulphide replacement zones, or mantos, both within the main Magistral North body as well as in the newly discovered Oyon mantos (Table 1). The intercepts are near existing mine infrastructure and will be quickly incorporated 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 further underground drilling is in progress (Figure 1).


This latest follow-up expansion-definition drilling program continues to define additional mineralization in the Oyon mantos, located in the hanging wall to the main Magistral North deposit (Figure 1).
As presently defined the Oyon zone contains multiple stacked lenses (or mantos) of replacement semimassive to massive sulphide mineralization and associated veining that varies from 1 to plus-10-metres thick, a modeled strike length of approximately 100 metres and a currently defined dip length of approximately 180 metres.
In general, average grades for all key metals (Zn, Pb and Ag) are significantly higher than current Santander mill feed grades (Table 1). Zinc to lead/silver metal ratios remain high, in the 1:1 to 2:1 range, which is suggestive of the upper to mid-portions of the mineral system and is interpreted to suggest significant additional depth potential remains. Initial targeting suggests that similar style (Pb-Ag rich) mineralization may exist in the hanging wall of the Magistral Central deposit. The Company cautions that additional drilling is required to further test this hypothesis.
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.

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