La Platosa Mine

Snapshot

Location:
5km north of Bermejillo, Durango State, Mexico

Ownership:
100% owned

Size:
20,947 hectares

Project stage:
Commenced production in 2005, underground mine

Mining Method:
Modified room and pillar
Cut and Fill

Mineral Resource Statement, Platosa Mine Mexico, SRK Consulting (Canada) Inc.

  Grade Contained Metal
Category Tonnes
(‘000)
Ag
(g/t)
Pb
(%)
Zn
(%)
AgEq
(g/t)
Ag
('000s oz)
Pb
('000s lbs)
Zn
('000s lbs)
AgEq
(‘000 oz)
Indicated 485 549 5.6 5.9 1,055 8,562 59,752 62,953 16,456
Inferred 13 516 4.7 6.5 1,014 216 1,344 1,859 426
 

(1) Mineral Resources are estimated pursuant to NI 43-101 with an effective date of March 31, 2018.
(2) Mineral Resources are estimated at a cutoff grade of 375 g/t AgEq and silver, lead and zinc prices of $17.00, $1.10 and $1.30,  and assuming metal recoveries of 89% for silver and 81% for lead and zinc respectively.

(3) This Mineral Resource Estimate was prepared under the supervision of Sébastien Bernier, Principal Resource Geologist at SRK Consulting (Canada). Mr. Bernier is a Qualified Person as defined in NI 43-101.
(4) All figures have been rounded to reflect the relative accuracy of the estimates.
(5) Mineral Resources that are not Mineral Reserves do not necessarily demonstrate economic viability. The Mineral Resources reported herein have been estimated using a geostatistical block modelling approach informed from silver, lead and zinc assay data collected in core borehole samples. The construction of the Mineral Resource model was a collaborative effort between Excellon and SRK personnel. The construction and methodology for the creation of the resource wireframes was overseen by Blair Hrabi of SRK, P.Geo. (APGO #1723) and geostatistical analysis, variography, mineral resource evaluation and classification were undertaken by Sébastien Bernier of SRK, P.Geo. (APGO #1847). All technical work was reviewed by Ben Pullinger, SVP Geology of Excellon (APGO #2420).

The Mineral Resource Estimate were prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum’s (CIM) ‘Mineral Resources and Mineral Reserves Best Practices’ guidelines (November 2003) and are classified per the CIM ‘Definition Standaards for Mineral Resources and Mineral Reserves’ (May 2014).

Mr. Ben Pullinger, P. Geo, Senior Vice-President Geology, has acted as the Qualified Person, as defined in NI 43-101, with respect to the disclosure of the scientific and technical information relating to this website.

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