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SDLRC: Brooke Clements highlights technical diamond articles for August 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.

August 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
Role of major erosion events in Earth's dynamics. Behr, ID This is a review of a Nature paper where Sobolev and Brown postulate that sediment lubrication associated with subduction as a result of uplift, erosion and sedimentation has played more of a role in plate tectonics than previously thought, even in the Archean.
Synoptic view of lithospheric S-wave velocity structure in the southern United States: a comparison of 3D seismic tomographic models. Netto et al., ID An easy to understand comparison of S-wave tomography and crustal thickness models for the southern USA.
With the eyes in Bunder lamproites cluster. Presser and Kumar, ID Summary of the basement in the area of the Bunder lamproite cluster in India. The Bunder cluster sits on the edge of a graben and the authors suggest that focused exploration in the center of the graben could lead to the discovery of new pipes, potentially with higher diamond grades.
Wesselton block cave: grade control. Smit, ID This Powerpoint presentation from a South African Institute of Mining and Metallurgy conference this summer was provided by the author. It describes the block cave operation at the Wesselton kimberlite which was discovered by De Beers in 1890. The Kimberley-Ekapa Mining JV between Petra Diamonds and Ekapa Minerals is currently mining the pipe.
Fifty years of plate tectonics afterthoughts of a witness. LePichon, ID Interesting comments on the evolution of plate tectonic thinking from a participant in some of the early research.


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