Orosur Mining (AIM:OMI) reported that hole MAP-106A at its APTA prospect in the Anzá project returned a composite 229.7m @ 0.88g/t Au after intersecting mineralisation shortly below the footwall fault at roughly 70m vertical depth.
The Anzá project comprises about 330km2 in Colombia's Mid-Cauca gold belt and is wholly owned by Orosur following its November 2024 acquisition of Minera Monte Aguila from previous JV partners, and Orosur is a minerals explorer and developer operating in Colombia and Argentina.
MAP-106 was collared outside the interpreted Aragon fault zone and, after some re‑drilling and azimuth adjustment, intersected continuous mineralisation consistent with a new geological model that confines gold to silicified sediments and volcaniclastic cores between two faults c.100m apart.
Within the broad intercept the company reported higher-grade intervals including 6.85m @ 2.15g/t Au, 59.2m @ 2.15g/t Au, 7.65m @ 7.07g/t Au and 4.7m @ 3.95g/t Au.
APTA had seen almost 39,000m of historical drilling since 2012 but no mineral resource was ever declared, and the MAP-106A result has modified the company's interpretation of controls on mineralisation.
The company says the result creates three priority follow-up areas: Area A a deeper higher-grade corridor >1km long and up to 100m wide, Area B shallow bulk-tonnage potential beneath transported cover, and Area C a continuous hanging-wall vein system.
"APTA was always tantalising but misunderstood as previous drilling was never pulled together into a coherent picture," said Brad George, CEO.
The company said follow-up programs will include expansion and infill drilling of the deep zone, shallow testing for near-surface mineralisation and step-out drilling on the hanging-wall vein.
