Lucapa Diamond Company Limited (ASX: LOM) (“Lucapa” or “the Company”) and its Project Lulo partners Empresa Nacional de Diamantes E.P. (“Endiama”) and Rosas & Petalas are pleased to update progress on the search for the kimberlite sources of the high-value alluvial diamonds at the
Lulo project in Angola. Bulk sampling to test first of the priority kimberlite pipes in the Canguige catchment for diamonds set to commence in April/May 2020.
As set out in the ASX announcements of 19 February and 21 February 2020, the Canguige catchment has become the focus of the Lulo kimberlite exploration program following the recovery of 45 diamonds of up to 3.75 carats in individual size from stream samples taken from the tributary
flowing into the Cacuilo River (Figure 1).
The Canguige catchment hosts five of the 16 Lulo kimberlite pipes rated in a 2019 technical review as being the most prospective to host diamonds, and thus considered potential sources of the high population of rare Type II alluvial diamonds being mined downstream along the Cacuilo River. A
delineation drilling program is underway to define the size and structure of each of these five priority pipes in preparation for bulk sampling to test for diamonds.
Further to the ASX announcements of 4 March 2020, the mobile Hanjin drilling rig has now moved to the third of those five priority kimberlites - L71 – following the completion of delineation drilling at L28 and L30 (Figure 1), where the targeted volcaniclastic kimberlite material suitable for bulk
sampling was intersected (See Figure 2 in the original press release).
Significantly, L71 is located just ~3km from the main road which runs through the 3,000km2 Lulo concession. The close proximity of L71 to the main road should enable a bulk sample to be excavated from this kimberlite pipe once the delineation drilling identifies the targeted near-surface
volcaniclastic kimberlite material.
The Project Lulo partners believe the L71 kimberlite bulk sample can be processed through the Lulo plant in April/May2020 to testfor diamonds. Bulk sampling of the other four priority pipes will follow.
In light of the highly-encouraging stream sampling diamond recoveries, the Project Lulo geological team is also reviewing other confirmed kimberlites in the Canguige catchment to determine whether any should be added to the delineation drilling/ bulk sampling program.
Two other priority anomalies in the Canguige catchment highlighted in the 2019 technical review are also being drilled in the current program to confirm if they are kimberlites.
Lucapa will provide further updates on the search for the Lulo diamond sources as they come to hand.
Figure 1: Location of the Canguige tributary sampling site, proximity to Mining Block 46 and kimberlites within the Canguige
catchment, including five of the 16 pipes rated most prospective by a technical review to host diamonds and
two priority drilling targets.
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Tel. +49-711-82 09 72 11
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Source: Company websites