Tanzania – ASX-listed Rift Valley Resources has increased its total resource at its Miyabi gold project in Tanzania to 700 000 oz following the release of the maiden resource estimate for the high grade Dalafuma deposit. The mineral resource at Dalfuma is 167 000 oz at a grade of 4.1g/t.

The high grade zones at Dalafuma remain open in several areas and further drilling is currently being planned to expand the defined resource.

The previously defined deposits at the project have also been re-estimated to allow reporting under JORC 2012 guidelines.

The Miyabi project now comprises over 700 000 oz as summarised below:

  • Total Mineral Resource of 14.3 Mt grading at 1.5g/t of gold for 704 000 oz
  • Indicated Mineral Resources of 7.1Mt grading at 1.7g/t for 387 000 oz
  • Inferred Mineral Resources of 7.3Mt grading at 1.4g/t for 317 000 oz
  • Includes five deposits within a 3.5 km strike extent
  • All deposits extend close to surface and have excellent potential for open pit mining
  • Substantial areas remain open with good potential for extensions to the defined Mineral Resources

“The discovery of the high grade Dalafuma deposit at Miyabi has greatly enhanced the already substantial resource inventory of the Miyabi project. The deposit remains open and we expect to quickly add high grade ounces with further drilling,” says Rift Valley Resources MD Geoff Gilmour.

Future Work  

The increased mineral resource inventory at the Miyabi project has confirmed the company’s belief that further shallow gold mineralisation remains to be discovered at the project.

The geological understanding gained from the Dalafuma discovery has allowed company geologists to re‐evaluate previous work carried out throughout the entire project area and a number of high priority targets have been identified for further drilling.

These include extensions to existing resources as well as strong gold anomalies within previous geochemical sampling programs. The significance of up to 10 m of barren transported ferricrete over these target areas was not previously understood and many prospective parts of the project have been tested with either soil sampling or 9m to 11m deep RAB drill holes, neither of which would have been effective.

The company is continuing assessment of available geophysical and geological data to allow a more regional exploration plan to be developed. This will lead to additional drilling being planned at the project.

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