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Lucapa announce significant diamond recovery at Angoloa mine

Published by , Editorial Assistant
Global Mining Review,

Lucapa Diamond Company Limited together with project Lulo partners, Endiama and Rosas & Petalas, have announced the recovery of diamonds from the initial processing of the Lulo kimberlite L164 bulk sample through the stand-alone kimberlite bulk sample plant.

Lulo kimberlite L164 bulk sample has yielded 20 diamonds weighing 15.51 carats from the initial processing of approximately 630 m3 of broken kimberlite material, representing a preliminary grade of approximately 2.5 carats per one hundred m3. Five diamonds greater than 1 carat have been recovered so far from the approximately 3.5 ha. kimberlite – the largest stone weighing 1.95 carats. The average size of the diamonds recovered so far is 0.78 carats/stone, a number of them classified as Type IIa by the Yehuda Colorimeter.

While the processing of the kimberlite bulk sample continues, these initial diamond recoveries already represent the highest diamond count and carat weight of diamonds recovered from any kimberlite bulk sample processed at Lulo to date. The processing of the remainder of the 3200 m3 broken kimberlite bulk sample is continuing, and a full reconciliation of processed volumes back to in-situ volumes and tonnes will be undertaken when processing is complete

Lucapa Managing Director, Stephen Wetherall said:

“This preliminary result is important in that it represents the best kimberlite diamond recoveries to date, confirms the existence of higher grade primary sources with commercial size diamonds and it bolsters our large geological database with confirmatory results for our teams to use to prioritise the other kimberlites and targets on the Lulo concession. We are beginning to see the desired outcome of the methodical exploration approach in a significant diamond province which has been accelerated by the recent commissioning of the dedicated bulk sample plant.”

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African mining news