The Pegmatite Puzzle

Research Article| August 01, 2012 The Pegmatite Puzzle David London; David London *ConocoPhillips of Geology & Geophysics, University of Oklahoma100 East Boyd Street, Room 710 SEC, Norman, OK 73019, USAE-mail: dlondon@ou.edu;gmorgan@ou.edu Search for other works by this author on: GSW Google Scholar George B. Morgan, VI George B. Morgan, VI *ConocoPhillips of Geology & Geophysics, University of Oklahoma100 East Boyd Street, Room 710 SEC, Norman, OK 73019, USAE-mail: dlondon@ou.edu;gmorgan@ou.edu Search for other works by this author on: GSW Google Scholar Author and Article Information David London *ConocoPhillips of Geology & Geophysics, University of Oklahoma100 East Boyd Street, Room 710 SEC, Norman, OK 73019, USAE-mail: dlondon@ou.edu;gmorgan@ou.edu George B. Morgan, VI *ConocoPhillips of Geology & Geophysics, University of Oklahoma100 East Boyd Street, Room 710 SEC, Norman, OK 73019, USAE-mail: dlondon@ou.edu;gmorgan@ou.edu Publisher: Mineralogical Society of America First Online: 09 Mar 2017 Online ISSN: 1811-5217 Print ISSN: 1811-5209 © 2012 by the Mineralogical Society of America Elements (2012) 8 (4): 263–268. https://doi.org/10.2113/gselements.8.4.263 Article history First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation David London, George B. Morgan; The Pegmatite Puzzle. Elements 2012;; 8 (4): 263–268. doi: https://doi.org/10.2113/gselements.8.4.263 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyElements Search Advanced Search Abstract Virtually every conceivable model to explain the internal evolution of granitic pegmatites had been proposed by the 1920s. Two of these hypotheses have prevailed: (1) the fractional crystallization of flux-bearing granitic melt inward from the margins of the pegmatite body to the center, and (2) the buoyant separation of an aqueous fluid from the silicate melt and its effects on the redistribution of components. A recent model combining aspects of both concepts invokes the formation of a flux-enriched boundary layer of silicate liquid in advance of a crystallization front. Though most of the internal chemical and textural features of pegmatites can now be reconciled, the puzzle of pegmatites is far from solved. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.