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DIAMOND is een onafhankelijk Zwitsers bedrijf met een uiterst hoog technische niveau dankzij onze jarenlange ervaring in de markt van de optische connectoren Tegenwoordig wordt glasvezel in vrijwel alle sectoren toegepast daarom richten wij ons (pro)actief op de ontwikkeling en productie van op de toekomst gerichte glasvezelaansluitingen Get price


Letšeng Diamond Mine Lesotho A Variant of Kimberley

The Letšeng Diamond Mine comprises two adjacent kimberlites the Main and Satellite pipes Very low grade and low frequency of high value stones preclude use of standard evaluation methods increasing the need for high confidence geology models Get price


Carbon and Kimberlite

16-7-2001Kimberlite is a bluish rock that diamond miners look for when seeking out new diamond deposits The surface area of diamond-bearing kimberlite pipes ranges from 2 to 146 hectares (5 to 361 acres) Diamonds may also be found in river beds which are called alluvial diamond sites Get price


How diamond

26-1-2012This is why kimberlite pipes are the sites of most of the world's diamond mines But diamonds are not the only passengers Kimberlites also carry many other types of rock with them on their long journey into the light In spite of this extra load kimberlite magmas travel fast and emerge onto Earth's surface in explosive eruptions Get price



Kimberlite is an igneous rock which sometimes contains diamonds It is named after the town of Kimberley in South Africa where the discovery of an 83 5-carat (16 70 g) diamond called the Star of South Africa in 1869 spawned a diamond rush and the digging of the open-pit mine called the Big Hole Get price


Last kimberlite trucked to plant at De Beers Victor mine

27-3-2019The last truckload of kimberlite from Ontario's first and only diamond mine has left the pit De Beers Canada said mining ceased at Victor mine on March 5 – 11 years to the day after the official opening in 2008 The honour of driving the last truck went to Nancy Wesley of Kashechewan FirstGet price


Marsfontein Mine Mokopane (Potgietersrus)

Marsfontein Mine Mokopane (Potgietersrus) Mogalakwena Waterberg District Limpopo South Africa An open pit diamond mine in a small high-grade kimberlite pipe associated with a kimberlite dyke The mine was started in 1998 as a joint venture between De Beers and Southern Era Resources and Get price



The chromian diopside is typically more abundant than diamond and because of its distinctive color it is readily visible However the value of the stone is not high enough to mine kimberlite for chromian diopside and essentially all diamond mines ignore the mineral and only mine for diamond Get price


Canadian Diamond Mines The Surprise in Northern Canada

3-8-2014Victor Diamond Mine The fifth Canadian diamond mine to open was the Victor Mine located in the James Bay Lowlands of Northern Ontario about 50 miles west of Attawapiskat It is an open-pit mine owned by De Beers and the first diamond mine in Ontario Diamonds were produced from one of sixteen diamondiferous kimberlite pipes on the property [5]Get price


Kimberlite Oilfield Research│Woodlands TX

Kimberlite pipes are the most important source of mined diamonds today The diamond laden deposits occurring at Kimberly South Africa were the first recognized discovery and became the source of the name The K shape inside of Kimberlite's diamond shaped logo represents mine shafts tunneled through dense rock to access a rare and valuable Get price


Kimberlite Courses

Kimberlite Basics 2 – Economic Implications of Magma Type Kimberlite and Related Rocks covers common magma types encountered during diamond exploration their recognition geology and diamond potential Kimberlite Basics 3 – Economic Implications of Kimberlite Emplacement covers contrasting types of kimberlite emplacement processes and Get price


12th International Kimberlite Conference

Disclaimer The information contained in this website is for general information purposes only The information is provided by Venue West Conference Services and while we endeavour to keep the information up to date and correct we make no representations or warranties of any kind express or implied about the completeness accuracy Get price


New kimberlite found at Gahcho Kue says Mountain

11-6-2019Toronto-based Mountain Province Diamonds has announced the discovery of a new kimberlite at the Gahcho Kue diamond mine 280 km northeast of Yellowknife The mine is owned 49% by Mountain Province and operated by De Beers Canada holder of the remaining 51% Dubbed the "Wilson" kimberlite thisGet price


Kimberlite Deposits and Geology Formation of Diamonds

The geology of Diamonds consist of crystalline carbon although a significant proportion of diamonds are derived from placid deposits i e hosted in sediments placid's are secondary deposits and all diamonds were at one time or another hosted by kimberlite igneous rocks The name Kimberlite comes from the town of Kimberley which grew up Get price


Another Grib Diamond Mine in Finland?

31-7-2015Another Grib Diamond Mine in Finland? Full version / After Lukoil reported nearly $340 million USD in revenue from sales of around 4 5 million carats of rough diamonds from its Grib Mine in Russia in 2016 which we believe offers high potential for numerous further diamond-bearing kimberlite discoveries Get price



27-6-2019Geologists at Canada's University of Alberta studied a sample of 116 diamonds from De Beers' Victor mine in Ontario The goal was to characterize the sample's mineral inclusions and identify any that could be age-dated using their isotopic compositions which could serve as indicator materials for kimberlite Get price



The Mir Russian diamond mine is the most expensive hole in the world and it is owned by the state-controlled company Alrosa Mir mine also known as Mirny is approximately 525 meters deep with a diameter of 1 2 kilometers It's been dubbed 'Diamond City' and is valued at a cool 13 Billion Get price


GemHunter's Guide to Diamonds and Their Mineralogy

A blog about how to find diamond deposits where to find rough diamonds and finally how to identify rough diamonds and their host rocks (i e kimberlite lamproite and lamprophyre) Some rare diamonds are worth many times that of any other gemstone Get price



At the start diamond discoveries were in alluvial deposits — in 1869 the first diamonds were found in yellow ground (and then in blue ground) near and in what was to become Kimberley the world's diamond capital (the diamond matrix was subsequently named kimberlite) Diamonds were later discovered in significant quantities in kimberlites in Get price


Cullinan mine (Premier Mine) Cullinan Pretoria District

Cullinan mine (Premier Mine) Cullinan Pretoria District (Tshwane District) Gauteng South Africa A diamond mine on farm Elandsfontein 480 JR in a kimberlite pipe dated 1 200 million years old previously owned by De Beers with a cross section of 32 ha at the surface the pipe is the largest Get price


Kimberlite Diamond Mine

Kimberlite is an igneous rock which sometimes contains diamonds It is named after the town of Kimberley in South Africa where the discovery of an 83 5-carat (16 70 g) diamond called the Star of South Africa in 1869 spawned a diamond rush and the digging of the open-pit mine the Big Hole Get price


Lace Diamond Mine (LDM) Kroonstad Free State

18-10-2019The Lace Diamond Mine (LDM) is located near the town of Kroonstad in the region of Free State in South Africa The mine lies about 200km south-west of the capital city Johannesburg The mine is operated by DiamondCorp which also holds 74% of Get price


Mir mine

The Mir mine (Russian кимберлитовая алмазная трубка Мир kimberlitovaya almaznaya trubka Mir English kimberlite diamond pipe Peace) also called the Mirny mine is an open pit diamond mine located in Mirny Sakha Republic in the Siberian region of eastern Russia Get price



Large olivine-rich clasts (light green) are part of the dark green Cambrian Snap Lake Kimberlite that intrudes the Archaean rocks of the Slave Craton This was Canada's only totally underground diamond mine and the only one in the Northwest Territories DeBeers was unable to sell this mine so they have put it out of production by flooding the Get price



While alluvial diamond mining is conducted through mining company Sociedade Mineira Do Lulo kimberlite exploration is conducted through joint venture company Projecto Lulo (Lucapa 39% interest and operator Endiama 51% Rosas Petalas 10%) Lucapa funds kimberlite exploration in the form of loans to Projecto Lulo Get price


Lake Ellen Kimberlite Diamond Mine Near Crystal Falls

The Lake Ellen Kimberlite Diamond Mine is near Crystal Falls Michigan Historically the site has been part of the Menominee Iron Mining District The site was first discovered in 1971 by Klaus Schulz And William Spence The Lake Ellen Kimberlite Diamond Mine was closed at the time of data entry with no known plans to re-open Get price


The Marsfontein Diamond Mine

The Marsfontein Diamond Mine -A Case History Mike Scott MSA Projects (Pty) Limited Chris Jemdngs SouthernEra Resources Limited Abstract A stream sediment anomaly found in February 1993 south east of Mokopane was systematically followed up using kimberlite indicator exploration sampling techniques ThisGet price


Firestone Diamonds

Liqhobong joined the short list of diamond producers in October 2016 as its production ramp-up started A number of special stones and coloured diamonds have been recovered Firestone hosted its first diamond sale in February 2017 The results of the Company's diamond sales are published in the Company's quarterly reports found here Get price


Overview Strategy

Dominion Diamond Corporation's flagship assets are its significant interests in two of the world's highest rock value diamond mines –Diavik and Ekati – located in Canada's Northwest Territories a business-friendly environment with a long track record of financial and economic stability Get price


Prospecting for Diamond Deposits

Diamonds are rare gemstones commercially mined in kimberlite lamproite and placer deposits Most originate from the earth's mantle but the rare gemstone can be found in nature using sound prospecting methods The author (the GemHunter) found many kimberlites and diamonds over the years as well as a variety of other gemstones Get price


Kimberlite Pipe Models Significance for Exploration

are also highly significant to the kimberlite diamond deposit model from the perspective of geological processes For example there is now thought to be less than 850 m of erosion at Kimberley (Hansom et al 2006) and not 1400 - 1600 m (Dawson 1971 Hawthorne 1975) Get price


30 Years of Diamonds in Canada

Diamond exploration work in the Northwest Territories and Nunavut in the early 1990's resulted in other significant discoveries Approximately 160 km north of Ekati and Diavik the Jericho Kimberlite was discovered in 1994 by Canamera Geological Ltd Tahera Diamond Corporation operated the Jericho Mine in 2006-2007 Get price



Diamonds are known to occur in a variety of rocks including high-pressure metamorphic rocks such as garnet-biotite gneisses of northern Kazakhstan alpine-type peridotites and meteorites However the only known economically significant primary sources of diamond are kimberlite Get price

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