Botswana Diamonds – Page 5 – The Diamond Certification Laboratory of Australia (DCLA)

Botswana Diamonds shares good news from Thorny River

Botswana Diamonds has announced that eleven diamonds and abundant kimberlitic indicators were recovered from drill samples at the recently discovered River Kimberlite pipe at Thorny River in South Africa.

John Teeling, Chairman, commented:

“The recovery of so many kimberlitic indicators and in particular diamonds, which are very rare to recover in small sample narrow reverse circulation drill holes is highly encouraging and bodes well for the potential commerciality of this exciting discovery”.

Following a detailed ground geophysical programme in October 2020, 6, six-inch percussion reverse circulation holes were drilled into the newly discovered River Kimberlite pipe.

A combined total of 39.5 m intersected kimberlite while an additional 55 m intersected a weathered kimberlite breccia.

Samples from these holes were taken at one metre intervals and twenty of these totalling about 500 kg were selected and submitted to an independent processing facility for assessment through screening, dense media separation and hand sorting.

11 Diamonds, 172 G10 pyrope garnets, 623 G9 pyrope garnets, 555 eclogitic garnets, 438 chromites and 268 chromium diopsides (clinopyroxene) were recovered at sizes between -1.0+0.3mm.

Recoveries of a specific mineral species were capped at 20 grains and thus this picture is a snapshot of the overall sample indicator content. Importantly, all the samples contained abundant kimberlitic indicators.

The diamonds are all notably of good colour and clarity and are of commercial quality and in high demand by the market. The diamonds were not weighed as the sample size was small and they are not representative of a possible population.

Pyrope garnets are common in peridotite xenoliths from kimberlite pipes, some of which are diamond-bearing. Pyrope found in association with diamond commonly has a Chromium Oxide content of three to eight percent which imparts a distinctive violet to deep purple colouration.

These are called G10 and G9 pyrope garnets. Eclogites typically result from high to ultrahigh pressure metamorphism of mafic rocks at low thermal gradients as they were subducted to the upper mantle in a subduction zone.

Garnets found in eclogitic xenoliths tend to have a deep orange colour. Diamonds in kimberlite come from both peridotitic and eclogitic xenoliths so the abundance of both types of garnet in this sample is noteworthy and this is supported by the recovery of diamonds from a relatively small drill sample.

Of significance too is that these diamonds are all of good colour and clarity. The next step is a detailed core drilling programme which is planned for the dry season.

Source: miningreview

Lucara recovers 341 carat white diamond

341 carat white diamond found at the Karowe mine in Botswana

Canada’s Lucara Diamond has found an unbroken 341-carat white gem-quality rock at its prolific Karowe mine in Botswana, with analysts estimating it could fetch more than $10 million.

The Vancouver based miner said the diamond was recovered over the Christmas period from milling of ore coming from the south western quadrant of Karowe’s South Lobe.

The diamond is the 54th stone over 200 carats recovered at Karowe since it began commercial operations in 2012.

The find builds on previous historic recoveries which include the 342-carat Queen of the Kalahari, the 549 carat Sethunya, the 1,109 carat Lesedi La Rona found in 2015, and the 1758 carat Sewelô, recovered in 2019.

Beyond Sewelô, the only larger diamond ever unearthed is the 3,106 carat Cullinan Diamond, discovered in South Africa in 1905. The Cullinan was later cut into smaller stones, some of which now form part of British royal family’s crown jewels.

Source: mining.com

Botswana Diamonds acquires Sekaka from embattled Petra

Botswana Diamonds (LON:BOD) said on Monday it had completed the acquisition of Sekaka, the exploration vehicle that belonged to embattled rival Petra Diamonds (LON:PDL) and which held three prospecting licenses in the country’s Central Kalahari Game Reserve.

In one of its licenses, Sekaka had singled out the KX36 kimberlite pipe, which is situated about 70 km from Gem Diamonds’ Ghaghoo mine, and 260 km north-west of Botswana’s capital Gaborone.

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Sekaka also had a recently built, fit-for-purpose bulk sampling plant on-site that includes crushing, scrubbing, dense media separation circuits and X-ray recovery modules within a secured area.

The acquisition includes an extensive database, built up over 15 years of exploration.

Botswana Diamonds believes the information contained in the database will provide substantial support to its future kimberlite exploration activities in the mining-dependent country, the world’s second-largest diamond producer.

“We are delighted that this acquisition has now closed. This paves the way to explore commercial development options for KX36 and begin to evaluate the extensive database in conjunction with ours to discover more kimberlites in prime diamond real estate,” chairperson John Teeling said in a media statement.

Diamond exports from the southern African nation dropped 42% to $1.49 billion in the first nine months of this year as production fell 29% to 12.3 million carats due to covid-related restrictions.

Botswana’s mining sector provides a fifth of the country’s GDP and 80% of its foreign exchange earnings.

Mounting woes
Petra Diamonds, the former owner of Sekaka, has been struggling for over two years. Its weak financial position pushed it to shed non-core assets and put itself up for sale in June.

The company reversed the decision in October, opting instead for a debt-for-equity restructuring. The deal would leave existing shareholders with just 9% of the company.

Petra is also dealing with allegations of human rights abuses at its Williamson mine in Tanzania, resulting from the actions of its security guards.

It recently reported a 36% fall in revenue and a net loss of $223 million (168.7 million pounds) for the year ended June 30, as the coronavirus pandemic deepened the company’s financial woes.

Source: mining.com

Lucara recovers 998Carat Rough Diamond

The Karowe mine has produced a 998-carat diamond, the latest in a string of large rough stones from the lucrative deposit in Botswana.

Lucara Diamond Corp., which owns Karowe, will work with manufacturing partner HB Antwerp to assess how to maximize value from the rough, the miner said Wednesday. The unbroken, high-white, clivage stone — meaning it needs to be split before further processing — came from the EM/PK(S) unit of the site’s south lobe, which has yielded some of the world’s biggest and most famous diamonds.

“Lucara is extremely pleased with the continued recovery of large, high-quality diamonds from the south lobe of the Karowe mine,” said CEO Eira Thomas. “To recover two [500-carat-plus] diamonds in 10 months, along with the many other high-quality diamonds across all the size ranges, is a testament to the unique aspect of the resource at Karowe and the mine’s ability to recover these large and rare diamonds.”

The EM/PK(S) area produced the 1,109-carat Lesedi La Rona in 2015, as well as the 1,758-carat Sewelô, which HB bought in January this year in collaboration with luxury brand Louis Vuitton.

The Belgian manufacturer later agreed to purchase all of Lucara’s rough above 10.8 carats for the remainder of the year. Last week, Lucara announced the sale of a 549-carat diamond from the same high-value patch of Karowe, with HB and Louis Vuitton again partnering on the stone.

The arrangement with HB prevented a heavier decline in Lucara’s sales in the third quarter, the first period in which income from the partnership started appearing in the miner’s top line.

Group revenue fell 9% year on year to $41.3 million in the three months ending September 30, reflecting Lucara’s decision not to hold its usual tenders of stones above 10.8 carats, the company reported Wednesday. Instead, it sold 5,633 carats through the HB partnership, with sales taking place approximately twice a month, while the miner’s online selling platform, Clara, boosted sales of smaller goods.

Total sales volume fell 3% to 112,943 carats, with the average price down 6% to $365 per carat. The company’s net loss deepened by 35% to $5.4 million.

“Lucara is now receiving regular, predictable revenue for its [10.8-carat-plus] diamonds using a superior pricing mechanism based on estimated polished outcomes less a commission and the cost of polishing,” Thomas added.

Source: Diamonds.net

Petra Diamonds sells Botswana exploration assets

Petra Diamonds (PDL.L) has agreed to sell its Botswanan exploration assets to Botswana Diamonds (BODP.L) for $300,000 and a 5% royalty on future revenue, the diamond miner, which is in the process of restructuring, said on Monday.

The purchase price will be payable in two equal instalments on or before August 31, 2021 and August 31, 2022, Petra said. Botswana Diamonds has the option to buy out the royalty for $2 million in cash.

Petra’s subsidiary Sekaka Diamonds Exploration (Pty) Limited, which Botswana Diamonds would take over, holds three prospecting licences including the KX36 project, which has an indicated resource of 17.9 million tonnes at 35 carats per hundred tonnes.

Botswana Diamonds managing director James Campbell said KX36 would be the company’s most advanced project in southern Africa, and Sekaka’s exploration database would also be “hugely complementary” to its current activities.

Petra, which has been planning to sell Sekaka since June 2018, said the deal is separate to the sales process it announced last month as part of its restructuring.

“The first tranche of the purchase consideration is not expected to be received until August 2021, making the sale too long-dated to help with Petra’s immediate cash flow challenges,” said BMO analyst Edward Sterck.

The sale still requires approval from the Botswana Competition Commission, ministerial consent in Botswana, and approval from Petra’s lenders and debtholders.

Campbell said he hopes the deal will be sealed by August 31.

Botswana Diamonds digs up first stones at South African mine

Botswana Diamonds said Tuesday that it recovered the first diamonds from plant commissioning activities on its Marsfontein mine in Limpopo, South Africa.

The announcement comes only days after it received a mining permit for diamond-bearing gravels and residual unprocessed stockpiles around the operation.

Chairman John Teeling said the plant was very close to reaching full operations following the installation of an in-field screen, two rotary pans, grease and x-ray recovery system.

“I am delighted with the rapid progress the team has made on-site and it is noteworthy that the first diamonds were recovered within two weeks of the mining permit being granted,” Teeling said.

The Marsfontein mine was operated for two years in the late 1990s, with a payback of its entire development costs in less than four days. The mine’s grade was 172 carats per hundred tonnes, at a bottom cut-off of more than 1.2 mm, containing many fancy coloured diamonds.

The surrounding deposits in question were overlooked when the mine was closed.

Diamond miners are struggling across the board, especially those producing cheaper and smaller stones where there is an over-supply in the market.

Buyers, those that polish and cut diamonds for retailers, have been hit this year by lower prices and tighter credit, prompting them to delay purchases.

De Beers, the world’s top diamond producer by value, has responded by axing production — with a target of 31 million carats this year compared with 35.3 million in 2018.

It has also announced it would spend more on marketing. At the latest sale, the company increased the amount of stones buyers were allowed to reject in each lot purchased from 10% to 20%, according to people familiar with the auction.

Source: mining.com

Lucara finds blue and pink diamonds at Botswana mine

Canada’s Lucara Diamond continues to find gem quality, coloured diamonds at its Karowe mine, in Botswana, which in April yielded the 1,758 carat Sewelô meaning “rare find” diamond, the largest ever recovered in the African country.

The Vancouver based miner has now recovered a 9.74 carat blue and a 4.13 carat pink diamond from direct milling of the South Lobe, the area that yielded the famous 1,111 carat “Lesedi La Rona” in 2015.

The announcement comes on the heels of last week’s display of a 123 carat gem quality, top white, Type II diamond, found at the same section of the mine.

It also follows the recent sale of a 2.24 carat blue for $347,222 per carat.

Karowe, which began commercial operations in 2012, has this year yielded 22 diamonds larger than 100 carats, eight of them exceeding 200 carats.

Since the start of the year, the miner has sold 19 diamonds each with an individual price in excess of $1 million at its quarterly tender sales. This includes seven diamonds that fetched more than $2 million each, and one diamond that carried a final price tag of over $8 million.

“Lucara is extremely pleased with the recovery of these rare, sizeable, fancy coloured diamonds, which have the potential to contribute meaningful value to our regular production of large, high-value type IIa diamonds,” chief executive, Eira Thomas, said in the statement.

The precious rocks will be put up for sale in December, during the company’s fourth quarter tender.

Lucara, which has focused efforts on the prolific Botswana mine this year, is close to completing a feasibility study into potential underground production and life of mine expansion at Karowe.

Source: mining.com

Botswana Diamonds identifies five targets likely to be kimberlites

The targets identified are very similar to the pipe that constituted the high-grade and famous De Beers Marsfontein mine, in so much as the pipe had little surface indication due to dolerite rock cover but grew and swelled below the dolerite.

Much of the Thorny River area geology is comprised of a dolerite dyke swarm.

John Teeling, chairman, comments:

“It has long been held that there should be high grade kimberlite pipes other than the Marsfontein mine in the Thorny River area.

“The geology made discovery difficult. New geophysical technology tries to see through the dense dolerite cover.

“The company pioneering the work, Subterrane, believe they have identified five targets likely to be kimberlites.

“We are working to better define where to drill. The targets are shallow so will not be expensive to drill”.

Conventional geophysical techniques have been unable to detect kimberlites under the dolerite including those that are deeper seated. Subterrane, a partner using its proprietary technology, enables the company to explore geophysical anomalies beneath the dolerite and those that are buried.

This could lead to the discovery of kimberlites similar to Marsfontein.

Thus far Subterrane has identified five such target areas within the Thorny River project.

Source: miningreview

Botswana Diamonds Shares Jump On Licence Extension

Shares in Botswana Diamonds PLC jumped Thursday after it extended two “strategic” diamond licences for further two years, as it considered forming a joint venture to develop the projects.

Shares in Botswana Diamonds were 9.9% higher at 0.54 pence in London on Thursday.

Botswana Diamonds – through its wholly-owned Sunland Minerals Ltd subsidiary – extended the Prospecting Licences PL232 and PL235 in Botswana to the end of September 2021.

The firm explained the “key” licences were “strategically located” in the centre of the Kalahari Desert in Botswana, covering 500 square kilometres. Botswana Diamonds has already identified “prospective drill ready targets” following “intensive” work at the sites.

Botswana Diamonds said it was “already in extended discussions” with a “major” diamond producer regarding the formation of a joint venture for the next phase of the work on the licences.

Source: morningstar

Vutomi to sell diamonds recovered from South Africa project

Botswana Diamonds associate Vutomi has received approval to sell diamonds recovered during a bulk sampling programme at the Thorny River project in South Africa.

The Thorny River bulk sampling project is a joint venture between SouthernEra, Palaeo and Vutomi.

SouthernEra holds a 40% interest in the project and provides processing services while Palaeo holds a 40% stake and serves as the mining contractor. The remaining 20% interest is owned by Vutomi, which provides the ground.

Until 10 June, 256 carat of rough diamonds were recovered. Sale of these diamonds from the bulk sampling will fund further development by Vutomi, in which Botswana holds a 40% stake.

The trenching programme has identified a hotspot at the project site with a thick, 4m wide kimberlite intersection, indicating a kimberlite blow.

According to Botswana Diamonds, the bulk sampling programme is expected to generate short-term cash flow while developing the mineral resource.

Botswana Diamonds’ partner, SouthernEra Diamonds, has included its coarse tailings dumps produced from the mining of the Marsfontein and Klipspringer diamond mines into the same revenue share partnership agreement.

Vutomi has obtained a Section 27 mining permit for a portion of the contiguous Marsfontein farm.

Part of this farm hosts rich M8 kimberlite dyke, bordering the Marsfontein diamond mine.

Botswana Diamonds is a diamond exploration and project development company with exploration licences in Botswana and South Africa.

Source: mining-technology.com