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SDLRC: Brooke Clements highlights technical diamond articles for April 2019

Sheahan Diamond Literature Reference Compilation
The Sheahan Diamond Literature Reference Compilation is compiled by Patricia Sheahan who publishes on a monthly basis a list of new scientific articles related to diamonds as well as media coverage and corporate announcements called the Sheahan Diamond Literature Service that is distributed as a free pdf to a list of followers. Pat has kindly agreed to allow her work to be made available as an online digital resource at Kaiser Research Online so that a broader community interested in diamonds and related geology can benefit. The SDLRC Blog is a guest commentary by an industry expert about articles, themes and trends in recent issues of the SDLRC.

April 2019

Comments by Brooke Clements

Brooke Clements received a B.Sc in Geology from Indiana University and an M.Sc in Economic Geology from the University of Arizona. From 1982 to 1997, he was an Exploration Geologist and Regional Manager for Exmin Corporation where he conducted diamond exploration programs throughout the United States. From 1998 to 2007 he was Vice President, Exploration for Ashton Mining of Canada Inc. Under his leadership, the Ashton-SOQUEM exploration team discovered the Renard diamond district in Quebec where Stornoway Diamonds opened the Renard Diamond Mine in 2016. From 2007 to 2015 he was President of Peregrine Diamonds Ltd. where he led the team that discovered the Chidliak diamond district on Baffin Island in the Canadian Arctic. Currently, Brooke is President of JBC Ventures Ltd., a consulting company specializing in mineral exploration and community and government relations. He is also President and CEO of Craton Minerals Ltd., a private diamond exploration company focused on discovering North America's next new diamond district.

Brooke Clements has volunteered to highlight the scientific articles that caught his attention in the monthly reference compilations. The opinions expressed are solely his and he can be reached at .

Technical Articles
Upper mantle structure underlying the diamondiferous Slave craton from teleseismic body-wave tomography. Lac de Gras Esteve et al., ID An interesting seismic model of the Slave craton underneath the Lac de Gras kimberlite district.
A gradual transition to plate tectonics on Earth between 3.2 and 2.7 billion years ago. Hartnady and Kirkland, ID The authors use U-Pb and Hf isotope analyses on zircons from granitoid bodies worldwide in support of the theory that plate tectonics began 2.7-3.2 billion years ago.
Jwaneng - the untold story of the discovery of the world's richest diamond mine. Lock and Vercoe, ID Though stories about the discovery of Orapa abound, this is the first detailed account of the Jwaneng discovery that I have seen. It's a great story.
Diamond Occurrences in Paraguay. Presser, ID This Powerpoint presentation from a conference devoted to diamonds in Paraguay this February summarizes diamond and lamproite occurrences in Paraguay.
The petrology of kimberlites from South Australia: linking olivine macrocrystic and micaceous kimberlites. Tappert et al., ID Over 200 kimberlites have been documented in South Australia, but they are not as well-known as the lamproites and kimberlites in northwestern Australia because there are no economic diamond grades. This paper is a good summary of the South Australia kimberlite fields.
The application of XRT in the De Beers Group of Companies. Voigt et al., ID A good summary of the development of XRT technology for diamond recovery at De Beers. A good way to get up to speed on the fundamentals and history of the process. XRT has proven itself very well in the recovery of larger stones; more work needs to be done before it is effective in the smaller size fractions.


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