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Purple Tourmaline from Zambia
  • September 1, 2020
  • Brendan M. Laurs; Alexander U. Falster; William B. "Skip" Simmons
  • The Journal of Gemmology
The Dunton Gem Quarry
  • October 1, 2019
  • Karen Webber; William B. "Skip" Simmons; Alexander U. Falster
  • Rubellite
Evidence for internal fractionation from Li isotopes in tourmaline and mica in the Berry-Havey rare-element pegmatite (Maine, USA)
  • September 1, 2019
  • Encarnacion Roda-Robles; Alfonso Pesquera; William B Simmons; Pedro P. Gil-Crespo; Alexander U. Falster
  • The Canadian Mineralogist
Rubellite Chemistry
  • January 1, 2019
  • Alexander U. Falster
  • Rubellite
Tourmaline (dravite) from the Simanjiro District, Tanzania
  • June 1, 2017
  • Cara Williams; John Bear Williams; Brendan M. Laurs; Alexander U. Falster; William B. "Skip" Simmons
  • The Journal of Gemmology

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