• Deer Trail

Deer Trail Project
Piute County, Utah, USA

MAG Silver, (through 100% owned DT Mining) also has an earn-in Option Agreement to acquire 100% of the 8300 ha (hectare) Deer Trail Property near Marysvale in central Utah, USA. The Deer Trail mine historically exploited high-grade silver-gold-lead-zinc-copper Carbonate Replacement Deposit (CRD) mineralization that MAG believes is related to a nearby Porphyry Copper-Molybdenum intrusive center that is potentially the source of the district’s mineralization. This model suggests that mineralization should be better developed somewhat deeper in the carbonate host stratigraphy and be continuous between the Deer Trail Manto and the porphyry source of the system. It also suggests that additional mineralized “spokes” may be present surrounding this porphyry “hub”. Exploration is advancing through active drilling near the historic mine and surface-based work to better define the porphyry center and trace mineralization outwards from it back towards the mine and into the additional mineralized areas that surround it.                                                                                   

The Deer Trail Project includes 111 patented and 682 unpatented claims (approximately 5,600 ha) encompassing the historic Deer Trail Mine and the adjoining Alunite Ridge area in Piute County, Utah.  The Deer Trail Project satisfies MAG’s top criteria when exploring for large CRD systems, specifically: the presence of high silver grades; location on a deep-penetrating regional-scale fault that hosts major CRD-family deposits; location at the top of a thick section of favorable host rocks; and an identifiable plumbing network of faults and mineralization (see Press Release September 10, 2020).

MAG’s initial exploration strategy on this property is already well advanced, and is to project the geometry of the feeder structures of the known CRD mineralization to depth into inferred underlying limestone host rocks to seek larger scale silver-rich massive sulfide replacements and potentially mineralized skarn. A deep-looking underground 2-D seismic survey was completed subsequent to the quarter end in October 2020.  The underground seismic survey results should assist in mapping out favorable host rocks at depth and in refining final drill hole angles and depths for the Phase I drill program.

2020 PHASE 1  Drill Program

With drill roads completed and drill pads fully permitted, a 6,500m (metre) Phase I surface drilling program commenced subsequent to the quarter end in November 2020 (all assays pending).  Initial targeting is based on an integrated 3D Leapfrog Geo® project combining a large historic data set with MAG’s CRD exploration model plus extensive new surface and underground mapping, core relogging and geophysical reprocessing.

MAG’s Phase I drilling priorities include: determining the depth to the thick section of high-potential limestone host formations known regionally to lie just below the comparatively unfavorable host rocks of the Deer Trail mine; tracing the identified steeply-dipping feeder structures to depth into these limestones; and, locating massive sulfide mineralization controlled by the above.

COVID-19: Safety Protocol

Safety is one of MAG’s key core values, and MAG is following protocol guidance from governmental public health agencies.  To date, no MAG employees or contractors at the Deer Trail Project site have tested positive for COVID-19.

DT Technical Presentation


Deer Trail Technical Presentation

DT Non -Technical slide deck


Deer Trail Non -Technical slide deck PDF

DT Non-Technical Video Presentation


Deer Trail Non-Technical Video Presentation 

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Fresnillo Annual Report 2019

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