Senegal – AIM-quoted exploration and development company Stratex International has received encouraging results from its Dalafin gold project in Senegal, following exploration work at the Madina Bafé prospect in the south of the licence area.

The 472.5 km2 Dalafin gold licence, of which the company owns 85% through its wholly-owned subsidiary Stratex West Africa, is located within the highly prospective Kédougou-Keniéba Gold Belt in the south-east of the country.

To date, the company has identified five key prospects, namely Faré (North and South), Konkonou, Baytilaye, Saroudia and Madina Bafé.

Highlights:

  • Sheeted tourmaline-quartz veins and quartz-tourmaline breccias confirmed over 1.2 km NE strike and over a width of 30 m to 45 m;
  • Trench mapping and sampling completed for a total 1 052 m with channel-sampling results including:
    • 0 m @ 1.40 g/t gold (MBT-005);
    • 0 m @ 0.86 g/t gold incl. 1.0 m @ 4.40 g/t gold (MBT-005);
    • 2 m @ 1.14 g/t gold (MTB-003); and
    • 0 m @ 1.77 g/t gold;
  • The sampled material within the trenches is dominantly highly weathered and leached, as a result, the gold mineralisation is lower grade than the unweathered material and is likely not to be representative of the potential mineralisation at depth;
  • Selective unweathered grab samples of quartz-tourmaline veins commonly return elevated gold assay values up to 22.24 g/t of gold;
  • Follow up trenching is considered for the fourth quarter of 2015 with drilling to potentially be undertaken next year.

The trenching, mapping, and sampling programme has confirmed the presence of a sizeable mineralised zone in the south-east part of the Madina Bafé prospect, which relates closely to a substantial structural zone identified from aeromagnetic data. The mineralisation remains open to the east.

The low to moderate assay grades are indicative of a substantial mineralised structural zone and it is probable that the modest gold grades actually reflect leaching of the gold in the weathered part of the regolith profile.

Drilling between trenches MBT-003 and MBT-004 has previously returned excellent intersections - including 9.6 m @ 16.08 g/t gold and 7 m @ 2.93 g/t gold - that are indicative of depth-continuity of the zone and of elevated gold contents.

Stratex has recently completed an exploration programme at Madina Bafé, comprising prospect-wide detailed regolith mapping, and trench mapping and sampling in the south-east of the prospect. Four trenches (MBT-003, MBT-004, MBT-005 and MBT-006) totalling 1 052 m have been completed over previously-identified anomalous zones defined by rotary air blast (RAB) drilling and deeper reverse circulation (RC) and diamond drilling.

These have defined a broad NE-trending mineralised shear zone, 30 m to 45m in width, over a minimum distance of 1.2 km.

Gold mineralisation is predominantly associated with either sheeted quartz-tourmaline veins (+/-pyrite) or quartz-tourmaline breccias, within a granodioritic host rock. The geological setting of mineralisation is very similar to that of Iamgold’s Boto project immediately to the east, where significant drilling intersections – including 36 m at 3.59 g/t gold – have recently been reported from their Malikoundi prospect.

A total of 649 samples were collected as composite horizontal channel samples (1 m or 2 m, according to observed geology, mineralisation and alteration) and selective grab samples of vein and breccia. Sampling has identified a number of mineralised veins sets over a total strike length of 1 km.

MBT-004 failed to intersect bedrock to a depth of almost 6m due to a deep weathering profile. However, the presence of abundant transported materials (mostly quartz-tourmaline veins and breccia boulders) within the trench suggest proximity to mineralised source rocks.

Drilling between trenches MBT-003 and MBT-004 has previously returned excellent intersections - including 9.6 m @ 16.08 g/t gold and 7 m @ 2.93 g/t gold - that are indicative of depth-continuity of the zone and of elevated gold contents.

Additional trenching is being considered across both the strike extension of Madina Bafé South-East and Madina Bafé West in the fourth quarter of 2015, ahead of a potential drilling programme across key targets in the Dalafin licence next year.

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