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Abstracts, Short Papers, Posters and Program Second Eugene E. Foord Pegmatite Symposium View of pegmatites northwest of Quartz Creek, Quartz Creek pegmatite field, Gunnison County Abstracts, Short Papers, Posters and Program Sponsored by: Colorado School of Mines Geology Museum Friends of Mineralogy, Colorado Chapter Denver Region Exploration Geologists’ Society Friends of the Colorado School of Mines Geology Museum Berthoud Hall, Colorado School of Mines Golden, Colorado July 15 - 19, 2016 Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado Second Eugene E. Foord Pegmatite Symposium Abstracts, Short Papers, Posters and Program Sponsored by: Colorado School of Mines Geology Museum Friends of Mineralogy, Colorado Chapter Denver Region Exploration Geologists’ Society Friends of the Colorado School of Mines Geology Museum Berthoud Hall, Colorado School of Mines Golden, Colorado July 15 - 19, 2016 Managing editor: Mark Ivan Jacobson Editors: Markus Raschke, Fred Barnard, Peter J. Modreski Front cover photograph: View, looking at the northwestern portion of the Quartz Creek pegmatite field, across Quartz Creek, Gunnison County, Colorado. Mark Jacobson photo. Back cover photograph: upper - Amazonite from the keyhole vug pocket 1986, Teller County, Colorado. Collectors Edge Minerals, Inc. specimen and photograph. lower - George H Weed and James D. Endicott digging at Crystal Peak, circa 1913. Douglas B. Sterrett, USGS photo. Symposium coordinators: Mark Ivan Jacobson, Fred Barnard, and Peter J. Modreski Symposium Treasurer: Fred Barnard 1 Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado Symposium planning committee members: Fred Barnard Ken Kucera Markus Raschke Michael Dempsey Peter J. Modreski Jeff Self Clare Dunning Richard Parsons Mike L. Smith Bruce Geller Mike Perkins Donna Ware Mark Ivan Jacobson Philip Persson Steve Zahony Please cite this work as: Jacobson, M. I., editor. 2016. Second Eugene E. Foord Pegmatite Symposium: Abstracts, Short Papers, Posters and Program. Held July 15-19, Colorado School of Mines, Golden, Colorado. Published by Friends of Mineralogy, Colorado Chapter, Denver, Colorado, 119 p. The Symposium was held at Berthoud Hall, Colorado School of Mines, Golden, Colorado, USA on July 15-17, 2016 with two days of geologic field trips on July 18 and 19, 2016. Acknowledgments Field trips would not have been possible without the help of a large number of people. Their kindness and friendship is much appreciated. Land access permissions were obtained from various governmental groups and private landowners. These people were: Joannah Merriman, Jack Pottle, Tim Ryan, Kristin Kahler, Matthew Pollart, Phillip Courtney, Kathleen Donahue, Ron Platt, Mike Tezak, Nicole Krauth, Bill Tezak, Steve Russell, Ray Berry, Tom Glor (Fremont County Acquisitions LLC), and Joseph Dorris. Field trip leaders were recruited from across Colorado. Their help was vital in planning and executing the field trips. These people were: Stephen Zahony, Mark Ivan Jacobson, Jennifer Gerring, Steve Wolfe, Philip Persson, Jeff Self, Donna Ware, Amber Brenzikofer, and Mike Perkins. Other symposium logistics were helped by many others; the tasks were almost endless. The University of Colorado symposium webpage was created by Chris Haddad. Gloria Staebler helped setup the bank account for the symposium. Iva Veselinova at Lithographie, Ltd. helped with completing the sales tax exemption for the symposium. Dorian Owen at the Colorado School of Mines assisted us in coordinating and planning the on-campus housing and meals. Bonnie Dyson assisted us with obtaining the needed third party insurance coverage documents. Steve Behling of Collectors Edge Minerals, Inc. kindly provided the back cover picture of amazonite. Copyrights The authors of the abstracts and field trip guides and the owners of the pictures that have been used in this proceedings volume have retained their copyrights to their works. These copyright holders have provided individually to each of the four sponsoring organizations, the Colorado School of Mines Geology Museum, Friends of Mineralogy-Colorado Chapter, Denver Region Exploration Geologists’ Society and the Friends of the Colorado School of Mines Geology Museum, a non-exclusive license of unlimited duration to reproduce, sell or distribute within the United States, physical and digital copies of this entire volume, and not parts of this volume, at their organization’s discretion. These rights can not be sold or transferred to any other organization or individual. 2 Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado TABLE OF CONTENTS WELCOME …………………………………………………………………………….…...… 4 MEETING SCHEDULE ……………………………………………………………………… 5 POSTERS ……………………………………………………………………………..…….… 8 CONTRIBUTIONS …………………………………………………………………………… 9 Hints on the origin and evolution of spodumene pegmatites in southeast Ireland. (poster)…………………...……. 9 Renata Barros, Julian F. Menuge, and Thomas Zack LCT pegmatites and the supercontinent cycle……………………………………………….…………….…..….… 14 Dwight C. Bradley and Andrew McCauley Crystallization of the Fisher quarry pegmatite, Sagadahoc Co., Maine: Preliminary insights from fluid inclusions (poster)………………………………………………………………….………….……….… 18 Clara J. Brennan, Samuel M. Cameron, and Mona-Liza C. Sirbescu The mineralogy of the Waterloo quarry pegmatites, southern Wisconsin. (poster) …………………………….….. 22 Thomas W. Buchholz, Alexander U. Falster and Wm. B. Simmons Vieirópolis pegmatite field, northwest of Paraíba State (Brazil): New occurrences of amazonite pegmatite ……… 24 Sandra de Brito Barreto, Axel Müller, José Ferreira de Araújo Neto, João Pedro Santana Bezerra, Igor Manoel Belo de Albuquerque e Souza, Rafaela Henrique Mendes França, and Lauro Cézar Montefalco de Lira Santos Mineralogy, geochemistry and geochronology of allanite pegmatites on the KIN property, eastern British Columbia ………………………………………………………….………………………………… 27 Dana Caudle, Jan Cempírek, Lee A. Groat, Leo J. Millonig Amazonite and smoky quartz pegmatites in the Smoky Hawk trend, Teller County, Colorado …………….…..…. 29 Joseph Dorris Origin, geochemistry and mineral chemistry of the Post-Penokean LCT-type pegmatites in Florence County, Wisconsin …..……………………………………………………………………………………………………..… 31 Alexander U. Falster and Wm. B. Simmons A large scale boundary layer texture in the Mt. Mica pegmatite, Paris, Oxford County, Maine (poster) …........…. 36 Myles M. Felch, William B. Simmons, Alexander U. Falster, and Karen L. Webber Exploring for topaz-bearing pegmatites near Pikes Peak ……………………………………………….………….. 37 Richard Fretterd and Jean Cowman The role of pegmatites and acidic fluids for hydrothermal Zr and REE transport in the Strange Lake peralkaline granitic pluton …………………………………………………………………………………..…………………... 40 Alexander Gysi Using Pearce Discrimination Diagrams to Evaluate the Tectonic Regime for Pegmatite Parent Granite …..……… 43 Sarah L. Hanson Rare earth element pegmatites in the South Platte region of Colorado (poster) …………...……………………….. 45 1 Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado Rhiana Elizabeth Henry, Charles Stern, Markus Raschke, Julien Allaz, Evan J. D. Anderson, and Alexandra Skewes Pegmatites of China: a bibliography (poster) …………………………………………...………………………….. 49 Mark Ivan Jacobson Experimental crystallization of the Macusani Obsidian. - Keynote speaker …………………………………...…. 51 David London and George B. Morgan VI Pegmatites of the Little Three mine, Ramona, San Diego County, California …………………………………...… 53 David London, George B. Morgan VI, and James L. Maner The rise and fall of amazonite ………………………………………………………………………………………. 55 Robert F. Martin and Maria Sokolov Geological setting and mineralogy of the LCT pegmatites of Leinster, southeast Ireland ……………………...….. 57 Julian F. Menuge and Renata Barros The California Blue Mine: A recently discovered aquamarine pegmatite in the Mojave Desert ……………...…… 61 Ian Merkel A review of the 1986 and 1999 Colorado pegmatite symposia …………………………………………………….. 62 Peter J. Modreski Crystallization-induced field diffusion as a driving force for pegmatite zonation ……………………………….… 65 George B. Morgan VI, David London, and A. A. Acosta-Vigil Can pluton-related and pluton-unrelated granitic pegmatites be distinguished by their chemistry? …………..…… 67 Axel Müller, Rolf L. Romer, Adam Szuszkiewicz, Slawomir Ilnicki, and Eligiusz Szelęg Primary (magmatic) and hydrothermal milarite-group minerals from Velká skála pegmatite, Písek pegmatite district, Czech Republic …………………………………………………………………………….……………………...... 70 Milan Novak, J. Cícha, R. Čopjaková, R. Škoda, and M. Vašinová Galiová Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado, USA (poster) ………………. 73 Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker Mineralogy and petrology of a new REE pegmatite near Wellington Lake, in relation to the South Platte Pegmatite district, Colorado, USA …………………………………………………………………………………………….. 78 Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien M. Allaz, Charles Stern, Philip M. Persson, Rhiana Henry, and Katharina Pfaff Raman and Rayleigh scattering microscopy: Applications
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