Archive

  • Hamdi Ali, a 17-year old high-school student from Canada has discovered a new way to extract diamonds from kimberlite rocks, according to a report from the University of Alberta where she was conducting summer research. She discovered that using SELFRAG high voltage pulse power fragmentation technology on the kimberlite rocks enabled recovery of diamonds that would have been crushed if established extraction methods had been used.

  • BlueRock Diamonds plc, the AIM listed diamond mining company which owns and operates the Kareevlei Diamond Mine in the Kimberley region of South Africa, has announced that the grade resulting from mining the first level of its latest kimberlite pipe "exceeds expectations". BlueRock is currently mining two of the five pipes at Kareevlei, called the KV1 and KV2. It has now processed the first Level 1 ore (10m to 20m below surface) from KV1, totalling 20,500 tonnes, resulting in grades of between 3.90 carats per hundred tonnes (‘cpht’) and 5.11 cpht at an average grade of 4.51 cpht.

  • Botswana Diamonds (BOD) on Wednesday released an update on the company's Sunland Minerals exploration projects in the Kalahari Desert in Botswana - Sunland Minerals is a JV with ALROSA - noting they were encouraged with the latest results. The exploration company has completed its mineral sampling over the 8 previously discovered and announced high contrast geophysical anomalies in the Gope Region of the Kalahari Desert, with all 8 anomalies turning up kimberlitic indicator minerals ("KIMs") - 267 in total. Analysis of the KIMs concluded that the sources were likely to be local.

  • Junior miner Botswana Diamonds has been awarded the priority 2.5 hectare Mooikloof kimberlite pipe concession close to De Beers’ flagship Venetia Mine, the company today announced. Mooikloof is a known 2.5 hectare diamondiferous kimberlite pipe last prospected in 1986 and fits into Botswana Diamonds’ strategy of undertaking fresh exploration work with modern techniques in areas where they had been found and mined before. The adjacent Oaks mine was previously owned and successfully operated by De Beers, achieving a grade of 53 cpht at a value of $156.

  • Pangolin Diamonds Corp. has signed an option agreement to earn up to a 75% interest in the diamondiferous AK10 diamond project located in Botswana, situated just 4 km from the now famous AK06/Karowe mine. “I am extremely pleased with this transaction", said Dr. Leon Daniels, President and CEO of Pangolin.

  • Kimberlite diamond deposits have been discovered in the Sese area of Chivi, with investors scrambling to start mining the gems that are expected to catapult Masvingo Province into a mining hub, reports Zimbabwe news outlet The Herald. Masvingo Provincial Affairs Minister Senator Josaya Hungwe said diamond mining was set to start in Chivi following the discovery, and said at a press conference the discovery of diamonds in Chivi would economically transform the province.

  • While out on North Arrow Minerals' Mel diamond property on Nunavut's remote Melville Peninsula, prospectors made a welcome discovery: a 62 kilogram surface sample of diamond bearing kimberlite. The sample returned 23 micro-diamonds. This prompted North Arrow to significantly increase the size of its 100% owned Mel Diamond Project from 7,500 ha to 56,075 ha. Claim staking was initiated as a result of North Arrow’s September 2017 discovery of a new diamond bearing kimberlite field at Mel, located within 20 km of tide water on the Melville Peninsula, Nunavut.  

  • Canadian miner Stornoway Diamond Co. has announced its exploration plans for the upcoming year. "With the successful construction and ramp-up of the Renard Diamond Project completed", they write, "the board of directors of Stornoway has approved a program of both brownfield and grassroots exploration aimed at both new discoveries, and the development of the existing resource upside potential at Renard.

  • Peregrine Diamonds reports that its 2017 resource expansion drill program has confirmed the high-grade CH-6 kimberlite extends from surface to 540 metres below surface (mbs). This represents an additional 280 metres below the 260-metre depth of the current CH-6 Inferred Resource announced on April 7, 2017. The CH-6 kimberlite remains open below 540 mbs, the current limit of drilling. Tom Peregoodoff, Peregrine’s President and CEO, said: “The results confirm that the high-grade CH-6 kimberlite extends well below the current resource base of 260 metres.

  • Results from survey work conducted at Botswana Diamond's Free State project, located between Bloemfontein and Kimberley, had indicated that sizes of kimberlites there ranged from 0.3 hectares to 1.15 hectares, the board of Botswana Diamonds announced on Friday. Following their announcement regarding the re-discovery of eight Group 1 kimberlites, Geofocus undertook detailed ground geophysical survey work aimed at determining the surface area of these kimberlites.

  • Lucapa Diamond last week adopted a new development plan for the high-value Mothae kimberlite diamond project that foresees increases in targeted production, cash flows and mine life. The improvements to targeted production and cash flows include: a 22% increase in diamond production to 498k carats, a 30% increase in kimberlite material mined to 25 million tons and a 12% increase in mine life to 13.5 years.

  • Last June, North Arrow Minerals - a Canadian based exploration company focused on the identification and evaluation of diamond exploration opportunities in Canada - announced the start of a $3.2M exploration program at the company’s 100% owned Naujaat and Mel Diamond Projects, Nunavut, Canada. At the Mel Project North Arrow, they were going to conduct detailed prospecting and geophysical surveys of high priority kimberlite indicator mineral (KIM) targets, and have now announced the discovery of the ML-8 kimberlite. A 62.1 kg sample of the ML-8 kimberlite has returned 23 diamonds larger than

  • Last week Friday, junior miner Botswana Diamonds said sampling work at its Ontevreden licence in South Africa, "produced abundant G10 and G9 garnets with a complimentary suite of eclogitic garnets," noting that, "This mix of garnets is typically seen in a high-grade kimberlite pipes. This work follows detailed ground geophysics which identified ...

  • Leave it to Botswana Diamonds' managing director James Campbell to find a groundbreaking approach to diamond exploration.

  • Zimbabwe's rough diamond production surged to 1.1 million carats in the first half of 2017, compared to 690,000 carats produced in the entirety of 2016 (the newspaper NewsDay last month cited 2016 production as 961,000 carats), said Finance and Economic Development Minister Patrick Chinamasa. He attributes the sudden rise to the government's $30 million capital investment in equipment for Zimbabwe Consolidated Diamond Company (ZCDC), which has enabled the mining company to shift from low-vale alluvial mining to more lucrative conglomerate and kimberlite diamond mining. 

  • Arctic Star, a Canadian diamond and mineral exploration company with diamond exploration properties in Nunavut (Stein), the NWT (Diagras and Redemption) and in the Athabasca Basin of Saskatchewan has agreed to acquire a 100% interest in a 243 hectares exploration permit over the Black Wolf (Masta Susi) and the White Wolf (Valkoinen Susi) diamond bearing kimberlites in northern Finland. Named the Timantti Project (timantti is Finnish for diamond'), "Arctic Star views this new project as a unique opportunity to advance a new diamond district", says Buddy Doyle, VP Exploration of Arctic Star.

  • Botswana Diamonds (BOD) the AIM and BSE listed explorer has announced that prospecting work on the Ontevreden licence held by Vutomi has identified a group 2 kimberlite pipe, the company said in a press release. Initial work indicates a size of 1.5 to 2.5 hectares in area containing high interest garnets.

  • Canadian junior miner Kennady Diamonds has announced "positive" diamond recovery results from sampling from the Faraday 3 and Faraday 1 kimberlites on its Kennady North Project, including the largest high-quality diamonds to date on the project, with a 7.78ct white gem-quality stone as well as numerous diamonds exceeding one carat. The samples were collected during the winter 2017 program that was designed to further delineate both kimberlites as well as to recover sufficient carats from Faraday 3 for valuation. The company summarizes the most relevant results as follows:

  • West Africa-focused Stellar Diamonds Project announced it had signed a tribute mining and revenue share agreement with junior Octea Mining for the Tongo-Tonguma diamond project in eastern Sierra Leone.

  • Zimbabwe NGO Centre for Natural Resource Governance (CNRG) said the Zimbabwe Consolidated Diamond Company (ZCDC) does not have the capacity to mine diamonds from kimberlite sources, reports Rough-Polished, adding that the wholly owned state company set up early last year had no equipment of its own, and would likely turn to foreign investors to develop in Tsvingwe (Penhalonga) in Manicaland Province, which is believed to hold kimberlitic diamonds. “A 50/50 joint venture is likely to be negotiated between ZCDC and its partner.

  • Pangolin Diamonds Corp.,a diamond exploration company in Botswana, has confirmed in a project update the presence of diamonds in six geographically different zones within the Malatswae Diamond Project. The focus at the Malatswae Diamond Project has been on six separate kimberlite sources and geographic zones producing indicator minerals within a 30km x 20km area of the project. A total of sixteen +0.5mm diamonds have now been discovered in soil samples within these six zones.

  • Canadian junior miner Kennady Diamonds whose Kennady North diamond project is located in Canada’s Northwest Territories in proximity to the Gahcho Kué Diamond Mine, has completed the bulk sampling program on the Faraday 2 pipe with approximately 265 tons of kimberlite collected from 29 large diameter drill holes. The two reverse circulation drill rigs are now focused on the nearby Faraday 3 kimberlite and have commenced drilling with the target of collecting a 300 ton sample from this pipe. Kennady Diamonds President and CEO, Dr.

  • Kennady Diamonds Inc., which controls 100 percent of the Kennady North diamond project located in Canada’s Northwest Territories in proximity to the Gahcho Kué Diamond Mine, announced that their bulk sampling of the Faraday 2 kimberlite is progressing well with 12 drill holes completed and 100 tons of kimberlite collected since the program began on January 20. Kennady plans to recover a total of approximately 570 tons of kimberlite from the Faraday kimberlites during the 2017 winter program, including 260 tons from Faraday 2, 300 tons from the Fa

  • Karelian Diamond Resources, an Irish diamond exploration company focused on Finland, announced they had received results from sampling undertaken by the Geological Survey of Finland (GTK) which had been requested by the company. In one of the seven samples that had been analyzed, a diamond had been discovered from the Kuhmo region of Eastern Finland.

  • The Bakwanga Mining Company (Societe Miniere de Bakwanga, or MIBA), a joint Belgo-Congolese company based in Mbuji-Mayi, Kasai-Oriental Province in south central DRC, denied having recovered an 87-carat white diamond worth more than $6,000,000.

  • Brazilian news sources, relying on information from the police, are reporting that a gang of criminals in have robbed the Braúna diamond mine. More than twenty heavily armed men on Sunday broke into the Brauna property in Nordestina, 750 kilometers north of Rio de Janeiro. They opened the safe using explosives. The criminals left in several cars and took five hostages, who were later released on a country road. The perpetrators are still missing. No announcements have been made about the value, size or even nature of their haul.

  • Australia-based Lucapa Diamond Company Limited has successfully defined a series of priority lamproite and kimberlite drilling targets at the Brooking Diamond Project in Western Australia and the Orapa Area F Diamond Project in Botswana, according to their ASX announcement. At Brooking, EM surveys have identified lamproite drilling targets in areas where diamonds and lamproite indicator minerals were recovered in sampling programs, while at Orapa Area F, a coincident magnetic/EM/gravity target has been defined within one of the world's most prolific diamond fields.

  • Russian diamond giant ALROSA may increase its stake in the Catoca project in Angola, according to Forbes' Russian edition, translated by Rough/Polished. The diamond company is interested in the share, "which later would make it possible to consolidate the revenues and reserves", ALROSA's president Andrei Zharkov told Forbes.

  • The Angolan Minister of Mines and Geology has formally approved a new kimberlite exploration licence for the Lulo Diamond Project - known for yielding large, type-IIa diamonds, which account for less than 1% of global supply - operated Australian diamond miner Lucapa. The new kimberlite exploration licence is for a period of five years and covers the entire 3,000 square km concession.

  • Back in May 2016, Canadian diamond exploration and development company Peregrine Diamonds announced a maiden Inferred Mineral Resource estimate of 4.23 million carats for the CH-7 kimberlite pipe at it's 100% owned Chidliak Diamond Project, Nunavut, Canada, with an overall average grade of 0.85 carats per ton, bringing the combined Inferred Mineral Resource for the CH-6 and CH-7 kimberlites of Chidliak to 15.62 million carats, raising its resource estimate by 37%

  • On August 22 2016, Stellar Diamonds announced that it had agreed with Octea Mining to combine their Sierra Leone projects to create the second largest diamond-mining operation in West Africa. Under the proposed deal, Stellar would amalgamate its Tongo kimberlite project with Octea’s adjacent Tonguma asset. The combined project would enable production of up to 250,000 carats per year of “high-value” diamonds, with mining grades of up to 290 carats per hundred tons of ore.

  • De Beers Exploration has advised CanAlaska Uranium that seven of eleven anomalies targeted in its summer drilling program have now been completed, without intersecting kimberlite. The remaining four targets are presently inaccessible until the winter freeze occurs. While the program finished without intersecting kimberlite, De Beers is still receiving and analyzing the data in order to better understand the physical properties and geophysical response.

  • This week's news that Arctic Star Exploration Corp. has acquired a 100 percent interest in mineral claims comprising 40,831 hectares in the Athabasca Basin, Saskatchewan - the "Diamond Dunes Project" - only two months after De Beers announced a US$15.8 million (C$20.4 million) option with CanAlaska Uran

  • Diamond broker Bonas announces the Braúna September rough sale; the entry of a new rough diamond production, directly to the Antwerp market.

    Developed over many years in the Brazilian state of Bahia by diamond miner Lipari, Braúna is South America’s first kimberlite diamond mine. The mine is projected to produce up to 400,000 cts of high quality diamonds per annum over the next nine years. Additionally, Braúna is a cluster of kimberlites, therefore leaving it with ample opportunity for further development in years to come.

  • Stornoway Diamond Corporation today announced a momentous occasion for the Canadian miner: processing of ore has commenced at the Renard Diamond Project in north-central Québec. This marks the beginning of a processing ramp-up designed to achieve 100% of plant nameplate capacity (2.16Mtons/yr at 78% plant utilization) within 9 months, according to their press release. As of July 13, 2016, 1,002,888 tons of ore had been stockpiled, sufficient to commence and maintain the planned ramp-up.

  • Australian miner Lucapa Diamond Company has announced the commencement of its kimberlite drilling program at its Lulo Diamond Project in Angola. The, "Drilling of high-priority kimberlite targets," says the company, aims "to identify the primary source or sources of the large, high-value alluvial diamonds being recovered from Lulo. The first target to be drilled takes aim at the hopeful source of the Angolan record 404-carat Type II D-color diamond that earned $16 million (AUD 22.5 million) in February. The program is scheduled to continue through 2016.

  • Pangolin Diamonds Corp is set to drill kimberlite targets at the company’s wholly-owned Motloutse Diamond Project, located 150 km east of the Orapa Diamond Mine in Botswana.

  • Dominion Diamond Corporation (Canada) yesterday reported that Diavik Diamond Mine production results for the first calendar quarter of 2016 showed processing and recovery volumes higher than in the same quarter of the prior year. Processing volumes in the first calendar quarter of 2016 were 17% higher (from 0.48 million to 0.56 million carats) due to greater ore availability as a result of higher mining rates and availability of stockpiled ore. Diamonds recovered in the first calendar quarter were 26% higher (from 1.50 million to 1.88 million carats) than in the same quarter of the prior ye

  • North Arrow Minerals announced the completion of its winter 2016 exploration drilling program at the Pikoo Diamond Project in central eastern Saskatchewan, and the main news is that it found new kimberlites in the North Pikoo area. "The most significant kimberlite discoveries of the program have been made in the North Pikoo area where kimberlite was encountered in seven of nine holes. Relationships between kimberlite intervals are complex with at least two, and perhaps up to four, discrete new kimberlites having been discovered.

  • Fourteen officials from the Brazilian Ministry of Mines and Energy are currently following a rough diamond training course provided by the Antwerp diamond industry, a project spearheaded by Belgian Secretary of State for Foreign Trade Pieter De Crem. The stated objective of the course is to ensure that Brazil is able to apply the strict requirements of the Kimberley Process properly, as Secretary of State De Crem comments, “Antwerp is one of the leaders with regard to applying the strict Kimberley Process regulations.