'Exceptionally rare' blue diamonds mined in Botswana
Michael Allan McCrae | January 8, 2013
African miner Lucara Diamond Corp. (TSX:LUC) recoved two "exceptionally rare" blue diamonds from its Karowe Mine in Botswana.
According the company's news release, the larger of the two diamonds recovered has a weight of 4.77 carats with the smaller diamond weighing 0.2 carats.
Options for the sale of the stones are currently being investigated.
Lucara said it recently sold a 9.46 carat blue diamond recovered from the Karowe Mine for $4.515 million.
"The recovery of the 4.77 carat blue diamond brings the total number of blue diamonds recovered in the past few months to four," said the company's CEO William Lamb.
"The re-occurring recovery of these exceptionally rare and sought-after stones is highly significant and confirms the quality of the diamonds produced from the Karowe Mine."
Lucara Diamond runs the Karowe Mine in Botswana and the Mothae Project in Lesotho.
According the company's news release, the larger of the two diamonds recovered has a weight of 4.77 carats with the smaller diamond weighing 0.2 carats.
Options for the sale of the stones are currently being investigated.
Lucara said it recently sold a 9.46 carat blue diamond recovered from the Karowe Mine for $4.515 million.
"The recovery of the 4.77 carat blue diamond brings the total number of blue diamonds recovered in the past few months to four," said the company's CEO William Lamb.
"The re-occurring recovery of these exceptionally rare and sought-after stones is highly significant and confirms the quality of the diamonds produced from the Karowe Mine."
Lucara Diamond runs the Karowe Mine in Botswana and the Mothae Project in Lesotho.
Lucara Diamond Corp. (TSX:LUC) announced Monday it extracted a 239.2 carat diamond in Botswana.
BeantwoordenVerwijderenThe Karowe mine, in the central district of the southern African country, also produced two more large stones weighing 124 and 71.1 carats.
Lucara's CEO said in a written statement the 239 carat raw stone is one of the largest diamonds ever to have been recovered from the Orapa kimberlite field in more than 40 years.
He also noted the mine has confirmed it contains fancy-coloured blue diamonds, some of the most valuable and sought-after gems.
The three raw stones will be sent to Belgium to be studied and then sold later in the year.
Christie's is set to hold a multi-million-dollar auction in May for one of the world's biggest diamonds, which weighed 236 carats when it was originally extricated.
Pangolin Diamonds Discovers One of the World's Largest Kimberlites
BeantwoordenVerwijderenV.PAN | 2 days ago
- Geophysical modeling suggests the Magi-Kimberlite at Pangolin's Tsabong North Project in Botswana is a 270 hectare (2.7 km2) pipe - Drilling intersects the kimberlite across 1,200 metres at an average 35 metres below surface - New findings build on earlier discoveries at the same site: High pressure garnet indicators have previously been recovered 14 metres above the Magi-Kimberlite - Two new kimberlite drill targets in Tsabong North, both more than 170 hectares (1.7 km2), have been identified by the geophysical modeling
- Geophysical modeling suggests the Magi-Kimberlite at Pangolin's Tsabong North Project in Botswana is a 270 hectare (2.7 km2) pipe - Drilling intersects the kimberlite across 1,200 metres at an average 35 metres below surface - New findings build on earlier discoveries at the same site: High pressure garnet indicators have previously been recovered 14 metres above the Magi-Kimberlite - Two new kimberlite drill targets in Tsabong North, both more than 170 hectares (1.7 km2), have been identified by the geophysical modeling
TORONTO, ONTARIO--(Marketwired - Oct. 16, 2013) - Pangolin Diamonds Corp. (TSX VENTURE:PAN) (the "Company" or "Pangolin") announced that it has discovered one of the largest kimberlites in the world, modeled at 270 hectares (2.7 km2), at its 100% owned Tsabong North Project (the "Project") in Botswana.
A number of the world's largest kimberlites include:
Se251 in Angola, measuring 220 hectares (2.2 km2)
MK1 in Botswana, measuring 180 hectares (1.8 km2)
Mwadui in Tanzania, measuring 146 hectares (1.46 km2)
Kimberlite Discovery
The new discovery stems from Pangolin's discovery earlier this year of two kimberlites, Magi-01 and Magi-02, at its Tsabong North Project.
Aeromagnetic data on those finds was submitted by Pangolin for independent review by Mr. Billy Steenkamp, of Xcalibur Airborne Geophysics of Pretoria, South Africa. Mr. Steenkamp is a Qualified Person under National Instrument 43-101 rules. His observations include the following:
The previously reported Magi kimberlites are part of a single intrusive complex with a total surface area estimated at 270 Hectares (2.7 km2):
Some of the selected intrusive kimberlite targets could be of syn- or pre-Karoo age; and
Two new kimberlite drill targets have been identified with total intrusive areas modeled at 170 Hectares (1.7 km2) and 175 Hectares (1.75 km2).
2)
BeantwoordenVerwijderenBased on these observations, Pangolin drilled a new hole between the Magi-01 and Magi-02 kimberlites. The new hole positively intersected the same sandy tuffs recognized in the two previous drill holes, confirming that the Magi-Kimberlite is a single large body and not two smaller kimberlites as previously believed.
The Magi-Kimberlite has now been confirmed over a distance of 1,200 metres in an East-West direction. The average depth of intersection of the crater facies sediments is approximately 35 metres. The depths of intersection of the sandy tuffs vary between 55.3 and 61.5 metres.
Further work will begin shortly; seven additional holes have been laid out for core drilling to determine the final size of the Magi-Kimberlite. These core holes will also be used towards modeling the complex geology of the crater sediments and kimberlitic sandy tuffs in preparation for future possible larger diameter drilling. Each hole will intersect at least 100 metres of kimberlite to recover any additional indicator minerals, and any diamonds. One hole will be drilled to a minimum depth of 250 metres of kimberlite intersection.
Detailed logging of the core indicates that the Magi-Kimberlite is of syn-Karoo age. This makes it older than the Cretaceous diamondiferous kimberlites of the Tsabong kimberlite field further to the south, dated at 78 million years, but potentially similar in age to the Jwaneng kimberlites, dated at 245 million years.
Core samples from all the holes are being submitted to independent laboratories to recover any additional indicator minerals, and any diamonds. High pressure garnets originating deep in the earth's mantle have previously been recovered from the Magi-1/1 drill core, 14 metres above the surface of the Magi-Kimberlite.
Dr Leon Daniels, PhD, Chairman of the Board of Pangolin, stated: "The geophysical models available to Pangolin strongly suggest the potential for discovering additional very large kimberlites in the Tsabong North Project area."
Read more at http://www.stockhouse.com/news/press-releases/2013/10/16/pangolin-diamonds-discovers-one-of-the-world-s-largest-kimberlites#BuyYgjcO4dAZvsX2.99
Saskatchewan diamond find catapults explorer 54% higher
BeantwoordenVerwijderenFrik Els | November 5, 2013
Saskatchewan diamond find catapults explorer 54% higher North Arrow proclaims find is significant enough to establish a new Canadian diamond district
Shares of North Arrow Minerals (CVE:NAR) rocketed 54% on Tuesday after the explorer announced the results of drilling at its Pikoo diamond project in Saskatchewan.
The Vancouver-based company's president and CEO Ken Armstrong said the recovery of "such relatively high counts of +0.85 mm diamonds from the first kimberlite discovered at Pikoo is an exceptional result and establishes Pikoo and the northern Sask Craton as a new diamond district in Canada."
The company announced a 209.7 kg sample of drill core from the PK150 kimberlite at Pikoo – discovered by North Arrow earlier this year – returned 745 diamonds larger than the 0.106 mm sieve size, including 23 diamonds larger than the 0.85 mm sieve size.
North Arrow, which still has $6 million in the bank to fund future drilling at the site, also announced its intention to vest its 80% earn-in option on Pikoo as part of an agreement with Stornoway Diamond Corp (TSE:SWY).
In afternoon dealings the $16 million company, which is also advancing a diamond project in Nunavut and in the Lac de Gras district in the Northwest Territories, was trading off its highs for the day up 46% at $0.57 on the Toronto venture exchange.
More than 302,000 shares versus usual daily volume of less than 30,000 shares had changed hands by 3.30pm EST on Tuesday.
Image is a selection of stones from the Pikoo diamond find with over 95% of the diamonds described as intact, white octahedrons and aggregates.
Interessant
VerwijderenDiamond prices to jump next year— Alrosa
BeantwoordenVerwijderenCecilia Jamasmie | December 2, 2013
World’s biggest diamonds producer Alrosa is anticipating a big jump in prices for these gems due to both reduced production in the medium term will and increasing demand.
In a meeting in Belgium between the company’s executives and its long-term clients, Alrosas’s head Fedor Andreyev, said rough diamond prices have been on the rise in the last few months and that the trend is likely to continue.
The company’s predictions are in line with a few recently published reports pointing to a steady demand from the US, paired with an ever growing appetite for these precious stones in China and India, as the main factors to affect diamond prices next year.
Alrosa also announced it has signed a cooperation agreement with the Antwerp World Diamond Centre (AWDC) aimed at improving the efficiency of cooperation between them over the next three years.
The deal also sets forth the intention for both parties to contribute to the development of a competitive rough and polished diamond market in Russia and the promotion its diamonds in the Belgian market.
Alrosa and the Antwerp diamond sector will now work more closely, exchanging expertise and information regarding the implementation of the Kimberley Process Certification Scheme.
In addition, both parties have committed to exchanging information, such as market intelligence, and inform each other on industry events, such as seminars and conferences, the development of new technologies or market opportunities.
The cooperation also provides an opportunity to set up diamond grading and sorting courses for Russian students at HRD Antwerp.
Peregrine Diamonds rises 52% on sample results
BeantwoordenVerwijderenMINING.com Editor | December 4, 2013
Nunavut turns Canada into emerging diamond-mining powerhouse
After taking a drubbing in October, Peregrine Diamonds Ltd. stock jumped 52.4% to 64 cents as investors took kindly to bulk sample results from the company's Chidliak project in Nunavut, Canada.
The results returned a diamond grade of 2.70 carats per tonne.
"The resulting diamond parcel consisted of 600.5 carats of commercial-size (+0.85 mm) stones, including 48 diamonds over one carat in size and 137 diamonds over 0.50 carat in size, with the largest diamond weighing 3.54 carats," Stockhouse reports.
"This first batch of diamond results from our 2013 bulk sample establishes CH-6 as one of the highest grade kimberlites in the world,” said CEO Eric Friedland.
“The quality of the diamonds is excellent and we are looking forward to obtaining the first independent diamond value for CH-6 in early 2014, and to establish a resource later that year.”
De enige exploratiebedrijven die het in het algemeen goed doen in het huidige beursklimaat, zijn de grafiet- en diamantbedrijven.
BeantwoordenVerwijderenEr worden steeds meer grote sierstenen gevonden zowel in Canada als in Afrika.
Grappig genoeg zijn beide koolstofproducten.