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Corongo
The block of 3100 hectares that Duran Ventures holds to the northwest of Aguila are collectively called the Corongo Property. Corongo is underlain by strongly folded and faulted Jurassic and Cretaceous clastic sediments intruded by dioritic and monzonitic dykes and plugs, thought to be related to and roughly contemporaneous with the Aguila intrusive.
The five main targets identified to date are Descubridora, Santa Rosa, Santa Rosa East, Pucapampa, and the Breccia Zone Targets.
The Descubridora target is part of a northwest-southeast trending zone which is roughly 3 kilometers long by 500 metres wide which has seen historic gold-silver production. This zone extends to the Santa Rosa East target area, with very similar styles of mineralization. Quartz-sulfide veins and breccias run either northwest-southeast or as cross-structures oriented southwest-northeast. Workings often extend for hundreds of metres on each structure. Strong gold and silver values are often associated with anomalous copper, molybdenum, lead, zinc, arsenic, and antimony.
Santa Rosa was operated as an underground copper mine by the Compania Minera Tarica S.A. in the 1960's. Quartz-pyrite-chalcopyrite-galena-sphalerite-molybdenite veinlets and mantos were mined on several levels. In 1967 the Guggenheim Exploration Company reported significant intersections of copper mineralization in five diamond drill holes. Rio Tinto continued exploration on the property in 1998 as part of a joint-venture exploration program with MacMillan Gold Corporation. Rio Tinto completed a preliminary series of drill holes along across a widely spaced grid in search of a potential bulk tonnage mineralized system. The results included several encouraging gold intervals that appeared to be related to feeder vein structures. Rio Tinto did not do any follow up work.
Pucapampa is also a past producer of copper and molybdenum. Strong copper, molybdenum, gold, and silver values are associated with altered dioritic intrusive bodies.
The Breccia Zone targets are large structurally-controlled breccia bodies related to regional folding and faulting of the Cretaceous and Jurassic clastic sediments. In some locations they are strongly mineralized with sulfides, and have also returned significant gold and silver anomalies in surface sampling.
Location Map of Corongo
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