Perseus – 3D Seismic Uncovers High Grade Resource Below Yaoure Mine
Background
Perseus has 90% ownership of Yaouré Gold Mine located in central Côte d’Ivoire, Africa. The deposit lies within the NNE trending Bouflé greenstone belt and mineralization is structurally controlled within the CMA Zone and the Yaouré Zone.
“…early results from a recent HiSeis three-dimensional seismic survey over the area has got everyone rippling with excitement”.
Jeff Quartermaine, MNN Article Sept, 2020
Solution
HiSeis were contracted to undertake a 16km2 3D seismic survey and a 24km regional 2D seismic line over Yaouré in 2020. The project was designed test down dip extension of the CMA structure, map other key structures, and identify where the highest probability of mineralisation would be. Fault-mod (AI driven fault modelling) was applied to the 3D seismic.
Outcomes
The 3D modelled seismic data shows reflectors and or breaks coincident with the down-dip trajectories of all east dipping mineralised structures and clearly identified the CMA structure extending to depth beyond the current drill coverage. The 3D model also clearly showed the geometry of features known to be important for high grade mineralization and identified other previously unrecognized structures. 2D seismic highlighted a structural domain 10km west of Yaoure which has similar seismic expression to the known orebody. Perseus’ Hi-Sight subscription with HiSeis is continuing to update the model and generate drill targets.
Section of 3D seismic fault model showing mineralised wireframes (red), Drilling underway to test near-surface extensions of CMA lookalike structures.
Dip direction seismic section with fault labels used to train the customised fault network and a 500m thick 3D slab of rendered fault probability results showing all fault sticks used for training in white. Green is high fault probability, red is low.
