Marimaca Copper Extends High-Grade Bornite Zone at Pampa Medina - 6m of 6.11% Cu and 24.0g/t Ag; 40m of 2.04% Cu and 11.1g/t Ag from SPRD-07
Marimaca’s bornene zone extends 300m south with 40m of 2.04% copper, boosting the scale of its high-grade manto system.
Marimaca Copper Corp. (MARI) reported step-out drilling results from the Pampa Medina sediment-hosted copper-silver deposit in Chile, highlighting three new holes that expanded the known mineralization.
- SPRD-07, located 300m south of previously released SPRD-05, returned 20m @ 2.65% Cu, 13.9 g/t Ag from 564m, including 6m @ 6.11% Cu, 24.0 g/t Ag from 574m. Deeper in the hole, a broad 104m @ 1.01% Cu, 4.7 g/t Ag from 664m included 40m @ 2.04% Cu, 11.1 g/t Ag from 670m, 14m @ 3.36% Cu, 17.7 g/t Ag from 688m, and 4m @ 6.54% Cu, 38.5 g/t Ag from 698m.
- SPRD-08B, the deepest hole to date at 1,052m, intersected 660m @ 0.41% Cu, 1.8 g/t Ag from 386m, with multiple higher-grade mantos including 98m @ 1.21% Cu, 7.6 g/t Ag from 386m and 16m @ 2.90% Cu, 21.2 g/t Ag from 388m. The hole also intersected basement-hosted mineralization for the first time, returning 66m @ 0.70% Cu from 802m.
- SPRD-09, located 300m south of SPRD-07, returned 30m @ 1.26% Cu, 2.6 g/t Ag from 440m (including 6m @ 2.34% Cu) and 32m @ 0.85% Cu, 4.4 g/t Ag from 506m, along with minor basement intercepts at depth.
Near-surface oxide mineralization was also encountered in SPRD-07, returning 10m @ 0.31% Cu from 180m.
Marimaca Copper Corp. (MARI) is advancing its Pampa Medina asset, an early-stage exploration project that offers optionality for future production expansion. The company targets more than 70,000 tonnes per annum of cathode production from regional oxide and sulphide sources.
SPRD-07 returned 40m @ 2.04% Cu, a step-out located 300m from a previous high-grade hole. This result materially expands the known volume of the high-grade bornite zone and feeds into the maiden MRE data cutoff, strengthening the case for a large, economically robust underground resource.
The stock rallied from approximately $7.06 to $7.85 in response to the promising sulphide discovery. While the result confirms the deposit’s district-scale potential, the stock remains well below its 52-week high and faces broader market headwinds.
Marimaca Copper is a Canadian-listed copper developer focused on the Antofagasta region of Chile. Its flagship asset is the wholly-owned Marimaca Oxide Deposit (MOD), for which a definitive feasibility study (DFS) was completed in August 2025. The MOD has a post-tax NPV8 of US$709M (US$1.07B at spot copper), initial capex of US$587M, and a targeted production of 50 ktpa copper cathode. Environmental approval was received in November 2025, and the company is advancing toward a Final Investment Decision.
In parallel, the company is exploring the early-stage Pampa Medina sediment-hosted copper-silver deposit ~28 km east of MOD, with a 30,000m drill program underway. Marimaca also holds the Madrugador and Cachorro exploration targets. The company has a strong cash position (~US$147M) and zero debt following a C$136.5M treasury offering in early 2026.