The Kitoma Iron Ore Project is located in Liberia and is approximately 7km west of the Nimba County Township of Sanniquellie and approximately 240km northeast of Monrovia, covering an area of 113km². The project is wholly owned by Cavalla Resources and is governed by an exploration license under a Mineral Development Agreement (“MDA”).
Mineral Resource Estimate
The global Mineral Resource estimate (using JORC 2012 guidelines) for Kitoma as at May 2014 at a cut-off grade of 30% Fe for low grade friable mineralisation and 45% Fe for medium grade friable mineralisation and 55% Fe for DSO is) is summarised as follows:
|DSO Indicated||26.7 Mwt at 58.0% Fe 0.09% P at a 55% Fe cut-off grade|
|DSO Inferred||4.6 Mwt at 56.8% Fe 0.09% P at a 55% Fe cut-off grade|
|Friable medium grade Indicated||74.2 Mwt at 48.5% Fe 0.08% P at a 45% to 55% Fe cut-off grade|
|Friable medium grade Inferred||25.2 Mwt at 47% Fe 0.08% P at a 45% to 55% Fe cut-off grade|
|Friable low grade Indicated||139.7 Mwt at 38.8% Fe 0.07% P at a 30% to 45% Fe cut-off grade|
|Friable low grade Inferred||179.3 Mwt at 37.1% Fe 0.06% P at a 30% to 45% Fe cut-off grade|
|Compact Indicated||247.9 Mwt at 34.7% Fe 0.06% P at a 30% Fe cut-off grade|
|Compact Inferred||647.3 Mwt at 35.3% Fe 0.06% P at a 30% Fe cut-off grade|
Note: Mwt = million wet tonnes. All cut-offs are based on estimated block selection.
The dominant host rock unit at Kitoma is quartz-magnetite itabirite. Unweathered itabirite which has iron grades ranging from 33% to 42% Fe but higher grade, friable itabirite is found within the oxidised zone and is a result of supergene enrichment by the preferential leaching of silica during weathering. Weathered zones are generally limited to topographical highs and contain iron grades of 42% to 67% Fe. The highest iron grades are found in two localised zones at the top of Mount Demina and in a central zone along Kitoma Ridge. The higher grade enrichment at Mount Demina and Kitoma Ridge may be related to the composition of the parent rock (oxide facies) or may be due to a higher level of deformation (faulting) which lead to greater fluid circulation.
The fresh oxide itabirite occurs as a fine to medium grained quartz- magnetite unit, a coarse- to very coarse-grained recrystallized quartz magnetite unit and a fine-grained laminated silicate facies quartz-magnetite-amphibole unit, all with magnetite comprising 30% to 40% of the mineral assemblage.
The proposed work program 2016/ 2017 will focus on the following:
The initial drilling program aims to:
- Refine the geological model for Kitoma, including well constrained stratigraphy and structure;
- Provide source material for further metallurgical testing to confirm the preferred ore type for development;
There are two phases to the planned drill program:
- Infill drilling at Mt Demina to close up drill spacing in order to confirm continuity and determine variability of grade and physical characteristics; and
Phase two of the exploration activity is expected to comprise of the following;
- Reconnaissance drilling across the Kitoma Exploration Area testing targets identified during mapping; and
- Commence scoping study in 2016.