Name of the Mine
Inmaculada mine.
Location
Ayacucho Department, southern Peru.
Mine Owner/s
Inmaculada was originally owned by Hochschild Mining in a 60:40 joint venture with International Minerals Corporation (IMZ). After completion of the acquisition of IMZ in December 2013, the Inmaculada mine is 100% directly owned by Hochschild.
Brief Description
Inmaculada is a 20 000 ha gold and silver underground mine comprising 40 mining concessions.
Brief History
Inmaculada started operations in 2015.
Primary Metals/Minerals
Gold and silver.
Secondary Metals/Minerals
None stated.
Geology/Mineralisation
Immaculada is characterised by low- and high-sulphidation epithermal mineralised systems, hosted by veins, breccias and disseminations within tertiary volcanics.
Reserves
Total proven and probable reserves as at December 31, 2021, were estimated at 6.64-million tonnes grading 147 g/t silver and 3.5 g/t gold.
Resources
Total measured and indicated resources as at December 31, 2021, were estimated at 7.93-million tonnes grading 169 g/t silver and 4.13 g/t gold. Inferred resources were estimated at 11.99-million tonnes grading 102 g/t silver and 2.57 g/t gold.
Mining Method
Sublevel stoping using longhole drilling and paste backfill, as well as cut-and-fill using horizontal drilling.
Major Infrastructure/Equipment
A primary crusher plant is situated close to the mine’s portal, with a 1.5-km-long conveyor belt transporting ore to the plant. A waste dump is located 1 km to the south of the plant.
Prospects
Hochschild has found an additional three-million gold equivalent ounces since operations started and there remains strong geological upside.
Contact Details
Hochschild Mining
Tel +44 203 709 3260
Email info@hocplc.com
Sources
Hochschild Mining. Website: https://www.hochschildmining.com/.
Hochschild Mining results for the year ended December 31, 2021.