The Sambarabougou permit is located within the Palaeoproterozoic Birimian volcano-sedimentary sequences and the intrusives of the Diale Formation. Early-stage exploration near the southern margin of a small syntectonic granite, the Sambarabougou Granite, led to the discovery of the Makabingui gold deposit , which comprises a large number (>30) of generally shallow east dipping lodes and quartz veins hosted by a gabbroic intrusive and contact metasediments. This structural setting is deemed highly prospective by Bassari geologists and east of Makabingui, the Missara prospect, which is also associated with another small tectonic granite and the EW structure, awaits geochemical drilling. To the north of the Sambarabougou Granite, dilational structures are apparent and identified by strong gold-in-soil and termite results. This area, termed the Makabingui North prospect, is progressing with Bassari completing initial RAB and RC drilling.
Sambarabougou contains the NE trending structural zone termed the Lafia Shear Zone which is situated both to the NE and SW of Makabingui. In the Sambarabougou permit the mineralised Lafia Shear Zone has already been defined by RAB and RC drilling. Exploration results from 400m spaced lines over a 6km strike length include 8m @ 1.4 g/t Au, 2m @ 11.4 g/t Au, 3m @ 2.1 g/t Au, 5m @ 1.3 g/t Au, 4m @ 2.0 g/t A, 3m @ 1.8 g/t Au and 5m @ 2.0 g/t Au.
Sambarabougou also contains the alluvial gold area of Douta.
"Located within the Palaeoproterozoic Birimian volcano-sedimentary sequences and the intrusives of the Diale Formation"
Bassari is also exploring a major gold corridor immediately south of Makabingui. Previous shallow drilling and recent artisanal mining has confirmed widespread gold mineralisation in this area.
Makabingui South is along strike from the Makabingui Gold Project which has returned outstanding feasibility results. Makabingui South is defined by highly anomalous soil and termite mound gold anomalies and significant gold intercepts returned from previous wide spaced RAB & RC drilling (~400 metre spaced lines). Structural interpretation indicates the presence of a major mineralised gold corridor. As well as alluvial gold artisanal’s have previously mined quartz lode hosted gold mineralisation in the weathered bedrock.
Previous artisanal activity within the Makabingui Gold Project area south of the existing resource has identified potential for multiple new areas of mineralisation within a regional NE trending shear zone (Main Transcurrent Zone – MTZ) - Refer Figure 1.
Within the overall prospect area gold mineralisation is expected to occur within dilational sites that formed in local perturbations along the recognised cross-cut faults during structural reactivation. Bassari has identified three priority infill drilling areas south of the existing gold resource MS1, MS2 and MS3 (refer Figure 2).
The MTZ is viewed as a long acting and wide zone of crustal deformation which acts as a primary regional and crustal scale control for the existing gold deposits and gold mines in Mali and Senegal. Previous soil and termite mound sampling results clearly indicate highly anomalous gold mineralisation along the length of the MTZ regarded as one of the primary controls of gold mineralisation (refer Figure 3).
"Confirmed widespread gold mineralisation within an 8km long gold corridor"
Figure 1. - Makabingui & NE Trending Mineralised Zone
Figure 2. - Makabingui South Propsect
Figure 3. - Kedougou-Kenieba Inlier
Lafia is 21km along strike from Sekhoto, where previous trenching intersected encouraging results. Drilling at Lafia intersected significant zones of quartz veining with gold mineralisation including 3m @ 3.3 g/t Au and 0.5m @ 0.4 g/t Au. These results support the model for Lafia to be a major fluid pathway where significant gold mineralisation is expected to be associated with secondary structures.