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February 24, 2020, 8:47 am UTC    
October 11, 2019 08:21PM
Below are some talks on gem-bearing pegmatites

Spectacular Gem Crystals: Pegmatite Pocket Formation and Survival
Tom Campbell, Staff Mineralogist, The Arkenstone, Oct. 4, 2019

Granitic pegmatites Formation and mining
by Mark Jacobson, Retired Chevron Corporation, June 6, 2016

Pegmatites: An Update on Recent Production
Peter Lyckberg, 2018 GIA International Gemological Symposium


Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)
Subject Author Posted

Talks about origin and mineralogy of gem-bearing pegmatites

Paul H. October 11, 2019 08:21PM

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