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Inmaculada es una mina de 20.000 hectáreas de dos tercios de oro y un tercio de plata que tiene 40 concesiones mineras ubicadas en el Departamento de Ayacucho, en el sur del Perú . Inmaculada esta a 112 kilómetros de la operación Pallancata . Los derechos de concesión e intereses en Inmaculada eran propiedad de Minera Suyamarca S.A.C. , a través de la cual la corporación tenia una participación del 60 % en el control de Inmaculada, con el 40 % restante perteneciente a IMZ, bajo los términos de un acuerdo de joint venture. Tras la finalización de la adquisición de IMZ en Diciembre del 2013 la mina Inmaculada es ahora 100 % propiedad directa de Hochschild Mining.
La propiedad consta de cuarenta concesiones mineras y se caracteriza por ser sistemas mineralizados de baja y alta sulfuración, organizada por las vetas, brechas y diseminaciones en rocas volcánicas terciarias. La mina tiene un alto potencial geológico. Angela, la veta principal permanece abierta, con potencial de crecimiento adicional en varias otras estructuras dentro de la propiedad.
Además, el distrito minero de Inmaculada tiene más de 25 kilómetros de vetas de oro-plata, que permanecen en gran medida sin probar. No enfrentamos ningún problema de accesibilidad.
En el 2020, la producción equivalente de oro en Inmaculada fue de 176.09 koz compuesta por 129.178 koz de oro y 4,034 koz de producción de plata.
“Inmaculada Upside”
Mina area:
Tonelaje (t)
Ley de Plata (g/t)
Ley de Oro (g/t)
Producción de Plata (koz)
Producción de Oro (koz)
Producción de plata equivalente (koz)
Onzas de plata vendidas (koz)
Onzas de oro vendidas (koz)
Recursos atribuibles (Moz Ag Eq)
Vida de mina de recursos (años)
Capacidad
En 2020, el programa de exploración brownfield comenzó en el primer trimestre y se detuvo a mediados de marzo debido a la crisis de Covid. La perforación se reanudó en el tercer trimestre con un total de casi 28.000m perforados en las vetas Shakira, Juliana, Thalia, Millet y otras vetas, el objetivo fue cubicar recursos e identificar zonas potenciales de mineralización. A continuación se presenta un resumen de los resultados mas importantes de los sondajes perforados en el 2020:
Vein
Results (potential/resource drilling)
Bety
IMS-20-001: 1.0m @ 1.3g/t Au & 94g/t Ag
Lady
LAD-19-001: 1.3m @ 1.5g/t Au & 120g/t Ag
Lady Sur
LAD-19-002: 0.9m @ 5.7g/t Au & 17g/t Ag
LAD-19-003: 1.4m @ 27.0g/t Au & 113g/t Ag
South vein
IMM-20-002: 0.8m @ 15.0g/t Au & 1,753g/t Ag
Noel
HUA-20-008A: 1.1m @ 5.0g/t Au & 179g/t Ag
Shakira
HUA-19-008: 3.1m @ 5.1g/t Au & 252g/t Ag
HUA-20-008A: 1.3m @ 2.5g/t Au & 259g/t Ag
IMS-20-019: 1.3m @ 1.3g/t Au & 70g/t Ag
IMS-20-020: 2.9m @ 2.2g/t Au & 159g/t Ag
IMM-20-022: 1.2m @ 22.1g/t Au & 21g/t Ag
IMM-20-023: 5.6m @ 9.0g/t Au & 397g/t Ag
IMS-20-025: 3.0m @ 5.2g/t Au & 241g/t Ag
IMS-20-032: 7.6m @ 2.5g/t Au & 287g/t Ag
IMS-20-036: 2.5m @ 4.7g/t Au & 337g/t Ag
IMS-20-048: 1.8m @ 2.0g/t Au & 119g/t Ag
IMS-20-049: 4.6m @ 14.0g/t Au & 303g/t Ag
Millet
IMS-20-041: 1.2m @ 2.7g/t Au & 150g/t Ag
IMS-20-042: 7.2m @ 2.2g/t Au & 153g/t Ag
Angela extension
IMS-19-006: 1.2m @ 8.1g/t Au & 60g/t Ag
IMS-20-035: 3.5m @ 3.1g/t Au & 76g/t Ag
Tula
TLO-20-014: 1.1m @ 7.7g/t Au & 236g/t Ag
TLO-20-016: 1.8m @ 1.5g/t Au & 82g/t Ag
TLO-20-018: 1.2m @ 2.5g/t Au & 95g/t Ag
TLO-20-020: 1.8m @ 6.4g/t Au & 158g/t Ag
Diana
DIV-20-069: 1.1m @ 2.3g/t Au & 72g/t Ag
DIV-20-072: 1.0m @ 2.7g/t Au & 93g/t Ag
Perla
SBE-20-060: 0.8m @ 4.1g/t Au & 60g/t Ag
SBE-20-061: 1.1m @ 3.2g/t Au & 166g/t Ag
Lucrecia
SBE-20-039: 1.0m @ 2.0g/t Au & 131g/t Ag
SBE-20-042: 0.9m @ 3.7g/t Au & 81g/t Ag
Noelia
SBE-20-046: 0.8m @ 3.2g/t Au & 90g/t Ag
SBE-20-065: 6.1m @ 8.8g/t Au & 1,086g/t Ag
Peta
DIV-20-050: 1.3m @ 3.7g/t Au & 50g/t Ag
También se llevaron a cabo poco más de 100.000m de perforación infill hasta mediados de enero de 2021, lo que incrementó las reservas en 25,3 millones de onzas de plata equivalentes. Sin embargo, la declaración auditada de Reservas y Recursos para el Año Completo de 2020 (en las páginas 54-56) no incluye los resultados del trabajo de perforación de enero de 2021, estasse incluirán en la declaración de 2021.
Durante el primer trimestre de 2021, la meta es realizar 2.500m de perforación potencial en la extensión de la veta Angela así como en la estructura de la veta Eduardo. También se espera que la perforación comience más adelante en el año en áreas más alejadas de las operaciones para identificar nuevos recursos potenciales.
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