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Pilar gold project: updated drilling results

Published by , Assistant Editor
Global Mining Review,

On Monday this week, Canadian junior explorer Colibri Resource Corp. (Colibri) shared its assay results from the last seven holes and two hole extensions completed on its Phase 1 reverse circulation (RC) drilling programme on its 100% owned Pilar Gold Project in Sonora (Mexico). Highlights include an intersection of 61 m of 0.75 g/t gold (Au) which includes 17.3 g/t over Au over an intersection of 1.5 m in hole JES-18-24. (all assays in programme are 1.5 m in length).

According to Colibri, the objectives of the Phase 1 drill programme at Pilar have been to confirm continuity within previously interpreted zones of mineralisation, discover extensions to the known mineralisation, and explore locally for new zones of gold mineralisation. Hole JES-18-25 which was drilled approximately 60m southeast of the previous announced JES 18-03 confirms expanded mineralisation in the Main Zone and returned results of 5.4 g/t over 3 m.

These results, as well as those already released in Phase 1, have extended the Main Zone’s mineralised envelope to the northwest as well as the southeast by upwards of a total of 145 m. This represents an increase of 52% in the length of the Main Zone and potential remains open to both the northwest and southeast. On trend, approximately 170 m to the south east of JES-18-25, is a shallow historic mine shaft which has surface sampled 2.48 g/t Au and 1.23 g/t Au. Gold bearing mineralisation from this shaft is very similar to the structural mineralisation to the north west which would indicate that it may be part of the same system.

The results of the 4 trench exploration hole JES-18-27 (375 m east of Main Zone) have also been encouraging. It encountered a total of 19.5 m of mineralisation averaging 0.656 g/t Au from three separate zones/shears.

Summary of drilling and assay results

JES-18-04 EXT. – An additional 30 m was drilled as an extension into the vertical JES-18-04 hole. The results of which were announced on 8 May 2018. No significant results are reportable for this hole.

JES-18-05 EXT. – An additional 25 m was drilled as an extension into the original 125 m hole JES-18-05. Starting at 127.5 m the drill encountered a mineralised 9 m section which sampled an average grade of 0.21 g/t Au.

JES-18-21 – Drilled to a depth of 126 m, this hole was drilled to test eastern limits the Main zone to the southeast east. This hole encountered 1.5 m of 0.46 g/t near surface but did not identify any additional significant intersections.

JES-18-22 – This hole was designed to test for extension of the Main Zone to the south east. Although results were encouraging, the hole was only drilled to a depth of 33 m before being lost due to mechanical reasons. The hole encountered a section mineralisation of 6 m of 0.68 g/t Au from 13.5 m to 19.5 m.

JES-18-23 – This hole was designed to test the eastern limits of the known Main Zone mineralisation to the south west of known mineralisation. Although the hole encountered a 1.5 m intersection of 2.31 g/t Au near the surface, the rest of the 150 m hole did not encounter any additional anticipated economic grade materials.

JES-18-24 – This hole was drilled to the northwest into the known Main Zone. This hole encountered significant mineralisation over a width of 61.5 m at 0.75 g/t Au and is understood to be the longest intersection of ore grade materialisation encountered on the property to date. Included in the intersection is 1.5 m of 17.3 g/t Au.

JES-18-25 – This hole was drilled to the southeast of JES-18-03 and intersected 5.40 g/t Au over a 3 m intersection length indicating that mineralisation from the Main Zone continues to the southeast.

JES-18-26 – This 165 m hole was drilled as infill in the Main Zone. A fairly wide intersection of 34.5 m grading 0.32 g/t Au was encountered.

JES-18-27 – 138 m exploration hole drilled into the 4 trench Zone. This hole encountered three zones of mineralisation consistent with previous interpretation of the 4 trench target.

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