Media Luna from Endeavour Silver Corp. - high-grade vein pushes ounces

Reviewed: ad hoc news New Release & Launch desk. Edited and checked on 2026-06-23, 04:23. Details in the imprint.

Media Luna from Endeavour Silver Corp. is not a shiny gadget on a shelf but a narrow, high-grade vein system deep under the hills near Guanaceví in Mexico, where miners feel the rock vibrating as drills bite into silver-rich ore.

What Media Luna actually is

Media Luna is a silver-gold-lead-zinc vein and associated stockwork zone that forms part of the Guanaceví mine complex in Durango state, Mexico. The deposit lies in the Sierra Madre Occidental in a classic epithermal district that has produced precious metals for more than a century.

According to Endeavour Silver, Media Luna is accessed from existing Guanaceví underground workings, using conventional ramps and crosscuts to reach the ore. In practice that means miners ride in diesel trucks down tight tunnels where roof bolts, mesh and the smell of wet rock define the working day.

Grades that stand out

On Endeavour Silver's maps, Media Luna is highlighted because of its high grades, typically well above 400 grams of silver equivalent per tonne in key stopes. That is materially higher than many open-pit silver operations that often work with sub-200-gram material.

President and CEO Dan Dickson has repeatedly underlined that Guanaceví, supported by the Media Luna and El Curso veins, remains the cash engine of the group, precisely because of these grades. In quarterly reports he points out that ore from Media Luna helps keep unit costs under control when metal prices turn volatile.

How ore becomes payable metal

Ore from Media Luna is trucked to the Guanaceví plant, where it passes through crushing, grinding and flotation circuits to produce silver-gold concentrates. Operators there see the slurry change color and density as the high-grade batches from Media Luna hit the cells.

The concentrate is then filtered and shipped to smelters for final refining, with payable silver and gold credited back to Endeavour Silver. For 2024, management guided total Guanaceví production in the mid-single millions of silver equivalent ounces, with Media Luna providing an important slice of that volume.

Risk profile and mine life

Like many narrow-vein systems, Media Luna is geologically complex, with variable thickness and grade over short distances. That demands careful infill drilling and tight geological control to avoid sending low-grade rock to the mill.

Endeavour Silver regularly updates its Guanaceví reserve and resource statement, where Media Luna contributes a portion of the measured, indicated and inferred inventory. Current plans keep Guanaceví running through the decade, assuming continued exploration success in and around the Media Luna structure.

Where the stock comes in

Endeavour Silver, listed in Toronto and New York, positions Media Luna as a supporting asset rather than the headline growth story, which today sits with the Terronera project. Net-net, the consistent output from Media Luna quietly helps underpin cash flow, which investors watch when they assess the Endeavour Silver share price on the TSX and NYSE.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.