Project Overview
The Neves-Corvo copper-zinc-lead-silver mine is situated approximately 220 kilometres southeast of Lisbon in
the Alentejo district of southern Portugal. Neves-Corvo is located in the western part of the Iberian Pyrite
Belt, which stretches through southern Spain into Portugal. The mineral deposits at Neves-Corvo are
classified as volcano-sedimentary massive sulfide. They typically occur as lenses of polymetallic (copper,
zinc, tin, lead) massive sulfides that formed at or near the seafloor in submarine volcanic environments.
Seven massive sulfide lenses have been defined comprising Neves, Corvo, Graça, Zambujal, Lombador, Semblana
and Monte Branco. The massive sulfide deposits are typically underlain by stockwork sulfide zones, which
form an important part of the copper orebodies.
Mine access is provided by one vertical, five-metre diameter shaft and a ramp from surface. The mine is
highly mechanized, with a number of different stoping methods employed, but the most significant are
bench-and-fill and drift-and-fill. The treatment facility at Neves-Corvo comprises of two processing plants.
The copper plant treats copper ores and has a maximum capacity of approximately 2.8 Mtpa. The zinc plant,
which treats zinc or copper ores was recently expanded to a capacity of 2.5 Mtpa.
Stream Details
| Date of Contract |
05-Jun-07 |
| Term |
50 years |
| Stream |
100% of silver |
| Upfront Consideration |
$35M |
| Delivery Payment Per Ounce |
$4.55 (annual 1% inflation adjustment)
|
| Cost Quartile |
Third |
For more information on the Neves-Corvo mine, please visit: www.boliden.com (opens in new tab)