Lucapa Diamond Company, in a significant stride towards maximizing its asset potential, has proudly announced the full operational status of its advanced XRT (X-Ray Transmission) large diamond recovery circuit at the renowned Lulo mine in Angola. This state-of-the-art facility, a collaborative effort with partners Empresa Nacional de Diamantes and Rosas & Petals, is now poised to revolutionize the recovery of exceptional diamonds from the company’s vast stockpiles of oversized material, accumulated since a monumental 404-carat stone was unearthed in February.
The inauguration of this cutting-edge circuit marks a pivotal moment for the Lulo Diamond Project, which has already established a reputation for yielding some of the world’s most spectacular and valuable diamonds. This strategic upgrade underscores Lucapa’s commitment to leveraging the latest technological advancements to enhance efficiency, increase recovery rates, and unlock the full economic potential of its rich alluvial deposits.
The XRT Advantage: A Leap Forward in Diamond Recovery
The newly commissioned XRT circuit is a game-changer for Lulo. Designed to process oversized alluvial gravels with unparalleled precision, it integrates sophisticated XRT technology with larger screening capabilities. This innovative combination allows the system to efficiently identify and recover individual diamonds of significant size, with Lucapa confidently stating its capacity to unearth stones weighing up to an astounding 1,100 carats. This represents a monumental leap in recovery potential, far exceeding conventional methods.
X-Ray Transmission technology operates by utilizing X-rays to differentiate diamonds from other host materials based on their atomic density and luminescent properties. Diamonds, particularly the highly prized Type IIa varieties, which are often low-luminescing, exhibit distinct characteristics under X-ray exposure, allowing for their rapid and accurate identification and separation. This technology not only boosts recovery rates but also minimizes damage to valuable stones during processing, ensuring their pristine condition and maximizing their market value. Its effectiveness in recovering higher-quality diamonds makes it an indispensable tool for operations targeting exceptional finds.
From Stockpile to Treasure Trove: The Genesis of a Strategic Decision
The decision to meticulously stockpile all oversized material recovered during mining operations dates back to the electrifying discovery of the 404-carat rough diamond, later affectionately dubbed the ‘4th February Stone’. This magnificent gem, which fetched an impressive $16 million at sale, served as a powerful testament to the Lulo concession’s extraordinary potential for harboring giant diamonds. Realizing that previous recovery methods might have missed similar large stones, Lucapa and its partners strategically halted the processing of oversized gravels, opting instead to accumulate them for future, more advanced recovery.
Now, with the XRT circuit fully operational, this foresight is set to pay dividends. The unit will not only integrate into the daily mining operations, processing all newly mined coarse gravels, but will also systematically work through the substantial 20,000 bank cubic meters (bcm) of stockpiled oversized material. This dual approach ensures that both current production and historical reserves are optimally exploited, creating a continuous stream of potential high-value recoveries from a previously unaddressed resource.
A New Dawn for Lulo: Leadership’s Vision for Growth
Stephen Wetherall, Chief Executive Officer of Lucapa Diamond Company, articulated the profound significance of this development, describing the installation and operationalization of the new XRT technology as the dawn of a transformative new phase in the Lulo Diamond Project’s evolution. His optimism is not unfounded; the implementation of such advanced technology historically correlates with significant advancements in large diamond recovery.
Wetherall drew a compelling parallel, noting, “We’ve seen what the implementation of this XRT technology delivered for Lucara, allowing Karowe mine in Botswana to recover the second largest diamond ever.” This reference to Lucara Diamond Corp.’s Karowe mine, famous for unearthing the 1,109-carat ‘Lesedi La Rona’ and the 1,758-carat ‘Sewelô’, underscores the proven efficacy of XRT technology in identifying and recovering truly colossal diamonds. By adopting similar best practices, Lucapa positions Lulo to potentially join the ranks of the world’s elite mines known for consistent recovery of rare and valuable gems.
Intensified Exploration: Unlocking the Primary Source of Lulo’s Riches
Beyond optimizing recovery, Lucapa is also significantly ramping up its exploration efforts aimed at identifying the primary source or sources of the exceptional alluvial diamonds for which Lulo is renowned. The presence of such magnificent alluvial diamonds strongly indicates the existence of rich kimberlite pipes upstream, which are the original geological formations where diamonds are formed. Discovering these primary sources would be a monumental achievement, transforming Lulo from a high-value alluvial operation into a long-term, predictable kimberlite mine with potentially vast reserves.
In line with this ambitious goal, a second drill rig and its dedicated crew have already arrived at the Lulo site, as planned. Furthermore, a third drill rig is currently being commissioned, with its deployment anticipated by December. This substantial increase in drilling capacity will significantly boost the pace and intensity of the kimberlite exploration program, enabling more comprehensive geological mapping and target testing across the vast 3,000 square kilometer concession area. These additional rigs are crucial for systematically evaluating geological anomalies and pinpointing the elusive kimberlite host rocks.
Advanced Geophysical Surveys: Precision in Kimberlite Prospecting
Complementing the intensified drilling campaign, Lucapa and its partners are also embarking on a sophisticated helicopter-borne Time-Domain Electromagnetic (TDEM) Survey. This advanced geophysical technique is instrumental in modern kimberlite exploration. The TDEM survey works by mapping the electrical conductivity of subsurface geological formations, which can reveal distinct signatures associated with kimberlite pipes. Kimberlites often have different electrical properties compared to the surrounding country rock, making them identifiable through such surveys.
This airborne survey will play a critical role in refining the kimberlite exploration program, not only in the immediate vicinity of the known alluvial deposits but also across the broader adjoining region. By providing high-resolution data on subsurface geology, the TDEM survey will help to improve target definition on known anomalies and identify entirely new prospective areas for future drilling. The combination of increased drilling capacity and cutting-edge geophysical surveys represents a comprehensive and aggressive strategy to unlock the ultimate origin of Lulo’s extraordinary diamonds.
Diversification and Growth: The Promising Brooking Project
In a separate and equally significant announcement to the exchanges, Lucapa also confirmed the impressive diamond potential at its Brooking project in Western Australia. This strategic acquisition sees Lucapa securing an 80% stake in the project, marking a crucial step in the company’s long-term growth and diversification strategy. The positive results observed at Brooking underscore its potential as a valuable addition to Lucapa’s portfolio of diamond assets, offering a new geographical footprint and a prospective new source of diamond revenue.
The confirmation of diamond potential indicates favorable geological indicators, which could include the presence of indicator minerals typically associated with kimberlite pipes, positive micro-diamond results from bulk sampling, or other encouraging geophysical anomalies. Such early positive results have already prompted Lucapa to apply for additional exploration licenses, seeking to expand its footprint over a wider project area. This proactive expansion reflects the company’s strong confidence in the Brooking project’s prospects and its commitment to thoroughly exploring and delineating its full potential, further solidifying Lucapa’s position as a dynamic player in the global diamond industry.
Lucapa’s Vision: Innovation, Exploration, and Sustainable Value Creation
The concurrent advancements at the Lulo mine – the commissioning of the XRT recovery circuit and the acceleration of kimberlite exploration – alongside the promising developments at the Brooking project, collectively paint a picture of a company resolutely focused on innovation, strategic growth, and sustainable value creation. Lucapa Diamond Company is not merely reacting to discoveries but proactively investing in the technologies and methodologies that will define the future of large diamond recovery and primary source exploration. This holistic approach ensures that Lucapa remains at the forefront of the industry, delivering exceptional results for its partners, shareholders, and the broader Angolan and global diamond markets.
Pic caption: The XRT and Recovery Sorthouse at Lulo Diamond Mine
News Source : gjepc.org