The Argyle lamproite diatreme is located close to the eastern margin of the Halls Creek Mobile Zone, in the East Kimberley, 120 km south of Kununurra. The pipe was discovered by the Ashton...
Nature of the Mantle Beneath the Argyle AK1 Lamproite Pipe: Constraints from Mantle Xenoliths, Diamonds, and Lamproite Geochemistry | Geoscience and …
This rock contains ~50% quartz sand grains. The Argyle Lamproite Pipe erupted during the mid-Mesoproterozoic, at about 1.178 billion years ago. The included diamonds are much older (~1.6 billion years). The Argyle Pipe is fortuitously preserved. Nearby pipes have eroded down to their roots.
The Argyle diamond mine remains the only economically viable source of lamproite diamonds. This deposit differs markedly by having a high content of diamonds but low quality of most of stones. Research at Argyle diamond have shown that most of stones are of E-type, they originate from eclogite source rocks and were formed under high …
Pyroclastic crater facies lamproite or "sandy tuff" from the Argyle Mine, West Kimberley (Australia) illustrating rounded xenocrysts of quartz (Q) derived from the local poorly-consolidated sandstones, diverse xenoliths of country rocks (X) and clasts of altered olivine lamproite (L) Field of view 6.5 × 4.5 mm (Plane-polarized light image).
The Argyle lamproite and other brief episodes of kimberlite, lamprophyre, and lamproite magmatism (some diamondiferous) on the Kimberley craton all bear their own geochemical and isotopic signature, reflecting variable relative contributions from asthenospheric and enriched lithospheric mantle sources.
The mine is the first successful commercial diamond mine (except alluvial mining operations) not located on a kimberlite pipe. The pipe is named "AK-1", although it is commonly simply called the "Argyle pipe". The volcanic pipe is a diatreme, composed of olivine lamproite, present as tuff and lava.
This rock contains ~50% quartz sand grains. The Argyle Lamproite Pipe erupted during the mid-Mesoproterozoic, at about 1.178 billion years ago. The included …
Argyle Deposit 2 The Discovery of the Argyle Pipe, Western Australia: The World's First Lamproite-Hosted Diamond Mine 3 Evaluation of the AK1 Deposit at Argyle Diamond Mine 4 The Geology of the Argyle (AK1) Diamond Deposit, Western Australia 5 Nature of the Mantle Beneath the Argyle AK1 Lamproite Pipe: Constraints from Mantle Xenoliths,
Apr 30 2014 nbsp 0183 32The Argyle lamproite and diamondiferous lamproites in the Murfreesburo area of Arkansas were also hidden Co Cr Nb Ni were detected in sand and ...
Diamonds from the Atri South Pipe, Bunder Lamproite Field, India, and Implications for the Nature of the Underlying Mantle | Geoscience and Exploration of the Argyle, Bunder, Diavik, and Murowa Diamond Deposits | GeoScienceWorld Books | GeoScienceWorld All Books By Publisher Book Chapter
The Argyle lamproite diatreme is located close to the eastern margin of the Halls Creek Mobile Zone, in the East Kimberley, 120 km south of Kununurra. The pipe was discovered by the Ashton...
Lamproite is a type of igneous rock that has recently undergone a massive scientific reexamination, resulting in a comprehensive revision of its taxonomy, as well as related nomenclature. The impetus for this sudden, in-depth reassessment was the discovery of economically advantageous diamond-bearing varieties of the rock.
Origin and Significance of the Quartz Sand in the "Sandy Tuff" of the Diamondiferous Olivine Lamproite Diatreme of the Argyle Mine, Western Australia. Geological Society of Australia, Learned Australasian Volcanology Association (LAVA) specialist group newsletter, July 2002, pp. 7-11. Boxer G L. 2002.
PDF | Tectonic histories and structural settings of the Diavik, Murowa, Argyle, and Bunder deposits-two kimberlitic-and two lamproitic-hosted diamond... | Find, …
Style 1: Halo setting. A halo setting can enhance an Argyle diamond by adding more Carat weight and size to the ring. Choose a Diamond Shape that matches the wearer's unique style. Halo setting …
The discovery and profitability of the Argyle diamond pipe has prompted the examination of many other lamproite beds, including several found in the United States. Lamproites, which typically contain …
The Argyle pipe consists of three major rock types; a quartz sand bearing tuff ("sandy tuff"), a tuff without the sand ("the non-sandy tuff") and cross cutting olivine lamproite dykes. …
Most read articles by the same author(s) V. Lorenz, Formation of maar-diatreme volcanoes and its relevance to kimberlite diatremes, International Kimberlite Conference: Extended Abstracts: Vol. 1 (1973): Vol 1: International Conference on Kimberlites, South Africa A. V. Sobolev, N. V. Sobolev, C. B. Smith, J. Dubessy, Peculiarities in the fluid and melt …
Two major facies are present in the Argyle Lamproite (a.k.a. Argyle AK1 Lamproite, Argyle Diatreme, Argyle Lamproite Diatreme, Argyle AK1 Pipe): 1) olivine lamproite lapilli-ash metatuff; and 2) sandy lamproite tuff. The rock seen here is from the second facies. This rock contains ~50% quartz sand grains (= the small specks of white).
The Argyle diamond mine remains the only economically viable source of lamproite diamonds. This deposit differs markedly by having a high content of diamonds but low quality of most of stones.
Image copyright of WA Museum In Western Australia diamonds are produced from mines at Argyle in the east Kimberley and Ellendale in the west Kimberley. Diamonds are made of carbon and crystallise naturally under the immense pressure found deep below the Earth's surface, more than 150 km down.
THE ARGYLE LAMPROITE PIPE, WESTERN AUSTRALIA Graeme J. Drew1 & Duncan R. Cowan2 1. CRA Exploration Pty Ltd, P.D. Box 175, Belmont, WA. 6104 2. Cowan Geodata Services, 12 Edna Road, Oalkeith, W.A. 6009 ABSTRACT The Argyle lamproite diatreme is located close to the eastern margin ofthe Halls Creek Mobile Zone, in the East …
Argyle mine, one of the world's largest diamond mines, is the only major diamond deposit found in an early Proterozoic mobile belt. It is hosted by the Argyle AK1 lamproite pipe and lies...
It's essential to buy an argyle diamond from a vendor with high-quality photos. Color, and therefore value, can vary greatly even within a specific color grade. In our experience, Leibish & Co. offers the best …
The Argyle lamproite pipe is an elongated, steep-sided body that prior to mining measured ~2 km long and 150 to 500 m wide, and had a surface area of ~47 ha (Jaques et al. 1986).Rayner et al. presented a new 3-D geological model of the pipe based on open pit and underground mapping data, and extensive drilling programs undertaken …
The unusual geological setting of the Ellendale mine, hosted by olivine lamproites emplaced along the margin of the Kimberley Craton (similar to the setting of the Argyle diamond mine), and its production of a unique range of white and yellow diamonds, give it an important place in the natural heritage of Western Australia.
While a 1 carat fancy pink (not a round) could go for roughly $140,000 to $180,000—depending on the quality of the color—a similar Argyle stone would easily fetch over $200,000. As an example, this is a …