Project Overview
The Marmato Project, owned by Aris Mining, is located near the Pan American Highway in Colombia, with access
to Medellin to the North and Manizales to the South. The Project has access to the national electricity grid
that runs near the property. Marmato comprises the existing producing underground gold and silver mine
(Upper Mine), which has been in operation since 1991, and the Marmato Lower Mine project, both of which are
covered by the Precious Metals Stream.
Mineralization within the Upper Mine is characterized by narrow veins that are mined using conventional
cut-and-fill stope methods and processed in a 1,200 tpd plant.
Mineralization in the Lower Mine includes wider porphyry mineralization that is to be mined using longhole
stoping methods, and processed in a newly constructed plant as part of the Marmato mine expansion project.
The Lower Mine remains open at depth, and to the east, where recent drilling resulted in the discovery of
the New Zone.
Key Developments
On May 7, 2025, Aris Mining reported that the processing plant capacity increased from 4,000 tpd to a planned 5,000 tpd. Aris reports that construction remains on track, and production is expected to start ramping up in the second half of 2026.
Stream Details
| Date of Contract |
5-Nov-2020 (Amended Q1 2022) |
| Term |
Life of Mine |
| Stream |
10.5% of gold until 310 koz of gold, then 5.25% thereafter and 100%
of silver production until 2.15 Moz of silver received, 50% thereafter |
| Upfront Consideration |
$175M |
| Delivery Payment Per Ounce |
18% of spot gold and silver until the
uncredited portion of the upfront payment is reduced to zero, 22% of spot gold and silver
price thereafter |
| Cost Quartile |
Third |
For more information on the Marmato mine, please visit: www.aris-mining.com (opens in new tab)