Sendero Resources Intersects 114m of 0.84 g/t Gold Equivalent Including 22m of 1.61 g/t Gold Equivalent at the Peñas Negras Project in the Vicuña District - Seite 2

Watch a news summary from Executive Chairman, Michael Wood below:

Foto: Accesswire

Foto: Accesswire

Figure 1: Plan View of La Ollita Drill Holes (PNDH003-008) with historic drill holes of significance

PNDH006

Hole PNDH006, showed telescoping of alteration and mineralization, intersecting a complex of porphyries, and associated phreatomagmatic breccias hosted in volcanic host rocks. The hole ended in mineralization at a depth of 398m for a total intersection of 364m averaging 0.51 g/t AuEq (Figure 2 and Table 1).

The alteration in the upper part of the hole is prominently advanced argillic, characterized by quartz-alunite-sericite with incipient vuggy quartz, which hosted the highest-grade mineralization including 22m of 1.61 g/t AuEq, with individual metal values of up to 1.28 g/t Au, 115 g/t Ag, 0.42% Cu, 4.73% Zn, 1.18% Pb and 195 ppm Mo.

Lower in the hole strong potassic alteration (K feldspar-biotite-magnetite) is observed, particularly in early porphyry dykes with high density quartz veinlets, superimposed by intense sericite-quartz. The late-stage porphyries, on the other hand, are chloritized with scarce to no quartz veining.

Primary mineralization consists of disseminated and quartz vein-hosted chalcopyrite, overlain by pyrite-chalcocite-black sulfides filling fractures and breccia matrix. Additionally, numerous intermediate sulfidation epithermal veins have been identified, composed of quartz and massive sulfides, predominantly galena and sphalerite together with elevated gold, silver and zinc values. The hole ended in a fault zone with strong silica-sericite clay alteration, the believed base of the lithocap.

Foto: Accesswire

Figure 2: PNDH006 La Ollita - Grade Distribution, Lithology and Alteration

PNDH004

Hole PNDH004 exhibits similar characteristics to Hole PNDH006 with telescoping of the alteration and mineralization from beneath the moraine cover returning an intersection of 266m averaging 0.52 g/t AuEq. Mineralisation terminated when a large post-mineral fault zone was encountered with strong silica-sericite clay alteration at 362m (Figure 3 and Table 2).

The upper part of the hole intersected a series of porphyries exhibiting potassic alteration (K feldspar and biotite). An early intermineral porphyry with intense porphyry style quartz veining was recognized as well as a late-stage porphyry with minimal quartz veining. Associated phreatomagmatic breccias were also observed. There is an intense general overprinting by epithermal-style advanced argillic alteration, represented by the association of sericite-quartz-alunite-pyrophyllite in the upper part of the hole. This telescoped alteration hosts the highest-grade mineralization including an intercept of 166 m of 0.63 g/t AuEq (see Table 2). Individual metals values up to 0.55 g/t Au, 0.3% Cu and 193 ppm Mo are related to epithermal overprint on early-stage porphyry mineralization, while individual values up to 1.51 g/t Au, 19 g/t Ag, 2.26% Zn and 1.04% Pb are related to late-stage intermediate sulphidation veins and epithermal-related mineralization (black sulfides) filling breccias.