Sendero Resources Provides Technical Update on Drill Program at The Peñas Negras Project

VANCOUVER, BC / ACCESSWIRE / February 27, 2024 / Sendero Resources Corp. (TSX:SEND) ("Sendero" or the "Company") is pleased to provide an update on its current 4,500m maiden drill campaign at its 100% owned Peñas Negras Project in the Vicuña District, La Rioja, Argentina.

Three diamond drillholes have been completed for a total of 1,544m across three priority targets at La Peña, Tamberías and La Ollita with assay results pending.

Sendero Executive Chairman, Michael Wood, commented:

"We are pleased with the visual results of the current drilling program at Peñas Negras. All three holes completed to date into three priority targets (La Ollita, La Peña and Tamberías) have intersected porphyry Cu-Au mineralization. Drilling has also confirmed that La Ollita is a composite porphyry-epithermal system with an extensive advanced argillic lithocap overlying a mineralized porphyry, like the major deposits in the Vicuña District. For this reason, La Ollita has advanced to the highest priority target for Sendero."

Drilling Update

• Hole PND 001: 575m at La Peña: Intersected an elongated diorite porphyry body with pervasive potassic alteration, characterized by quartz-biotite-magnetite-K-feldspar; with partial overprinting of quartz-sericite and chlorite. Intense porphyry-style stockwork veining was intersected including magnetite veinlets (M-type), A and B-type quartz, and anhydrite/gypsum veins. Hydrothermal and possible phreatomagmatic breccias cut the porphyry intrusive bodies. Widespread disseminated pyrite with traces of chalcopyrite and molybdenite were encountered throughout the hole. Towards the bottom of the hole intrusion-type brecciation occurs at the contact between the intrusive porphyry and the granitic country rock.
• Hole PND 002: 519m at Tamberías: The drill hole intersected small multiphase dacite to diorite porphyry intrusives with breccia phases that were emplaced into andesitic to dacitic volcanic country rock. The overall alteration is chlorite-illite-sericite overprinted on early potassic alteration (biotite-magnetite). Fine quartz-magnetite veinlets and stockwork veining of gray quartz are recognized throughout the entire hole, sometimes accompanied by sulfides. Abundant disseminated pyrite, with traces of chalcopyrite and molybdenite, are present throughout the hole.
• Hole PND 003: 450m at La Ollita: Intersected an advanced argillic lithocap in the upper 150m of the hole associated with intensely silicified polymictic (phreatomagmatic) breccia. The alteration is typical of high-sulfidation epithermal gold-copper mineralization, characterized by quartz-kaolinite-sericite-pyrophyllite, with zones of vuggy silica. Disseminated and fracture-controlled pyrite is the dominant sulfide with minor chalcopyrite and chalcocite. Sulfide filled fracture zones contain chalcopyrite-chalcocite and traces of covellite and enargite together with pyrite, galena, sphalerite and possible Ag-As-Sb sulfosalts. Deeper in the hole, the lithology is predominantly volcanic (andesite and dacite), and alteration gradually shifts towards an assemblage of chlorite-illite-sericite-kaolinite with patchy silica and gray quartz stockwork veining with minor quartz-chalcopyrite veinlets. The lower part of the hole contains abundant disseminated pyrite, with traces of chalcopyrite and chalcocite.

Foto: Accesswire

Figure 1. Peñas Negras Project and Exploration Targets