Kilo Goldmines Ltd. is pleased to provide an update on its exploration activities on its Imbo licence (PE9691) within the Ngayu Greenstone Belt.
HIGHLIGHTS
- Identification of three prospective drill ready targets totalling 5.1 kilometers of strike
- Recommended drill programme of 88 holes for a total of approximately 9,000 m. The previously announced drilling for March 2015 has been held over pending finalisation of the data review and is subject to financing to complete the full programme.
- Stream sediment sampling programme now 75% complete, with balance of samples to be collected by mid-June
OTHER ACTIVITIES
- Completion of review of all historic data including core relogging and plotting of cross sections, long sections and plans
- Surface mapping of known targets and extensions
- Mapping and sampling of artisanal workings
- IP (induced polarisation) surveys
- Selected test pitting
EXPLORATION ACTIVITIES
A comprehensive property scale understanding of the geology and the controls of mineralization within the Imbo license, PE 9691 has been gained from the year-long review of all historical drilling, Adumbi underground structural mapping, geochemical and geophysical data. In addition to the review of the historical data, exploration has been conducted over known targets that includes, surface mapping along 50 m spaced lines over known prospects and their extensions, mapping and sampling of known artisanal workings, a stream sediment sampling program to the west of the Imbo river, a detailed cartographic survey of all historical and artisanal workings, induced polarization ("IP") surveys (using both pole-dipole and gradient arrays), and selected pitting programs to gain an understanding of the regolith profile. This has resulted in the identification of three prospective targets, Adumbi West, Adumbi South and the Kitenge Extension ("KT Zone") (Figure 1). These targets have a total strike length of approximately 5.1 km and are ready to be drill tested.
The review has included detailed re-logging of all drill hole core, and the plotting of data on cross sections, long sections and plans at a scale of 1:500. This work is now complete for all drilled prospects (i.e. Adumbi, Kitenge, Manzako, Senegal, Vatican, Mondarabe and Lion) and represents a total of 34,660 m in 153 drill holes. The work has enabled a more in depth analysis of lithological and structural controls on mineralization, focussing on the delineation of high grade zones. At Adumbi, this is being assessed in conjunction with previously completed detailed underground mapping with the objective of defining additional down-plunge drill targets. Wireframe modelling of mineralization and structural features is being re-evaluated accordingly and is on-going. Systematic bulk density determinations were completed on core from all Adumbi drill holes. Measurements were taken at 1 m intervals within the mineralized zones, and at 2 m intervals in unmineralized rock, resulting in a total of 5,360 readings all of which passed the company's QC criteria. Reliable density data is now available for resource calculations for the oxide zone (1,384 measurements), transition zone (826 measurements) and sulphide zone (3,150 measurements). Bulk density determinations have also been completed on selected Kitenge drill core.
A pole-dipole Induced Polarization (IP) geophysical survey has been completed over the Adumbi West target, with the objective of defining zones of mineralization for drill testing. Pole-Dipole IP surveys have also been carried out to more closely define the northwestern and southeastern extensions of the Adumbi mineralized trend, outside the current area of drilling. Additional IP lines have been completed in the areas of the Kitenge, Manzako, Senegal, Vatican and Lion prospects, with a view to identifying the mineralized zones, and better interpreting the structural framework and mineralization controls.
In view of the very poor exposure in the licence area, test pitting at 80 m intervals has been carried out on selected IP lines. A total of 52 pits have been dug to the saprolite horizon, in order to provide lithological and structural information to assist in the IP interpretation. The nature of the overburden has also been logged in detail, with the main objective of distinguishing areas of residual and transported material, and better interpreting the soil geochemistry data.
A study was made of the multi-element data for the previously completed soil sampling survey, with the main objective of determining whether areas of transported and residual soil can be distinguished geochemically. It was found that: (a) the residual soils overlying the metasedimentary and metavolcanic terrains have very distinct geochemical characteristics, and (b) areas interpreted from airborne radiometrics and pitting to be covered by transported overburden, have elemental abundances indicating mixing of metasedimentary and metavolcanic components.
A detailed stream sediment sampling program over the whole of the Imbo licence has commenced, with the objective of identifying and prioritising new targets outside the known areas of mineralization. A total of 166 sampling sites have been selected using satellite imagery, to test drainage catchments with an average area of 0.75 km2. All sampling to the west of the Imbo River (75 sites) has been completed, and analytical results are awaited.
Adumbi West Target
The Adumbi West target lies to the west of the Adumbi prospect and is believed to be the faulted extension of Adumbi. This target occurs in a topographical low and for the most part is covered by transported material varying in depth from 30 cm to >3 m. The target is defined by a 1.7 km long linear magnetic anomaly and a coincident and linear gold-in-soil anomaly with values of 50 ppb - 1,000 ppb. This magnetic feature is similar to that which defines the banded ironstone formation ("BIF") at the Adumbi gold prospect hosting 19.11 Mt at 2.2g/t Au for 1.362 Moz. All soil samples were collected at a depth of 1 m below the surface and for the most part were taken in transported material. The fact that the gold-in-soil anomaly is linear and coincident with an underlying, but offset, magnetic feature gives confidence that the source of the gold-in-soil anomaly is in the underlying bedrock, rather than in the transported overburden. Detailed mapping over the Adumbi West target has revealed BIF float that is believed to be the source of the strong magnetic feature, similar to Adumbi.
Adumbi South Target
The Adumbi South target lies 480m to the south the Adumbi prospect. This target is defined by a 1.4 km long magnetic anomaly that appears to be demagnetized in places, and a >200 ppb gold-in-soil anomaly. This target has similar geomorphological features to that of Adumbi West in that it occurs in a topographical low, variably covered by transported soil with little to no lithological exposure.
The tenor of the gold-in-soil anomaly and the associated magnetic feature at Adumbi South is very similar to that associated with the Canal zone, which is thought to be the southeastern extension of the Adumbi mineralization. The previously announced Kilo drill intersections of Canal mineralization include:
- SCDD0001 - 12.55 m @ 7.70 g/t Au
- SCDD0004 - 6.45 m @ 4.21 g/t Au
- SADD0006 - 11.35 m 3.45 g/t Au
Kitenge Extension (KT) Target
The KT Zone lies to south and northwest of the Kitenge prospect that was drilled in 2013, and is defined by an approximately 2 km long magnetic feature with a coincident gold-in-soil anomaly with values from 50 ppb to 450 ppb. The magnetic feature has similar characteristics to that at the Canal and Adumbi South targets. Geomorphologically this target is similar to both the Adumbi West and South targets.
A gradient array IP survey is currently being conducted over this target in order to better assess the lithologies, structures and mineralization causing the magnetic and gold-in-soil anomalies.