Andreas Ertl

 

Washington, D.C., 2007

 

Institut für Mineralogie und Kristallographie

Geozentrum – Universität Wien

Althanstrasse 14

1090 Vienna

Austria

 

Research Interests:

Mineralogy; crystallography and crystal chemistry; X-ray diffractometry; crystal chemistry of tourmaline, boron-rich minerals, manganese oxides/hydroxides, sulfosalts.

 

 

Tourmaline (olenite) with tetrahedrally-coordinated boron:

 

Colorless boron-rich olenite with the formula:   Zoned Fe-bearing B-rich olenite from Koralpe,

(Na0.4 Ca0.3[]0.3) (Al2.4 Li0.4[]0.2) Al6 (BO3)3       Styria, Koralpe (Hughes et al. 2004)

(Si4.9 B0.8 Al0.3 O18) (OH)3 [O0.6(OH)0.3F0.1]

 

 

                        Eo-alpine Pegmatite (with bluish-greenish boron-rich olenite) crosscuts a mylonitic

garnet-bearing micaschist.

                        Locality: Koralpe, Styria, Austria.

 

 

Germany Tour 2008

 

Andreas Ertl with RAINER ALTHERR, RONALD MILETICH, HORST MARSCHALL, THOMAS LUDWIG, HANS-PETER MAYER,

WALTER MARESCH, HEINZ-JÜRGEN BERNHARDT, BERND MARLER, KLAUS-DIETER GREVEL, HANS-JOACHIM MASSONNE &     THOMAS REINECKE.

 

U.S.A. & Canada Tour 2007

 

            Andreas Ertl with John M. Hughes, DENNIS MAHONEY, SYLVIA PARKER, ROBERT F. MARTIN, EDWARD S. GREW,

Martin G. Yates, Félice Naus-Thijssen, Eva R. Wadoski-McClelland, Jeffrey E. Post, Michael A. Wise, &

Eloise Gaillou.

 

 

 

U.S.A. Tour 2004

 

      

ANDREAS ERTL visiting John M. Hughes, John Rakovan, M. Darby Dyar, Carl A. Francis, George E. Harlow, Jeffrey E. Post, Darrell Henry & Barbara Dutrow, David London, George R. Rossman, Brendan M. Laurs,

Bill Larson, Anthony R. Kampf, and the Mineralogical Society of Southern California.

 

http://home.tele2.at/andreasertl/ 

 

 

Most important publications (Last update: april, 9th, 2008)

 

1994

Ertl, A., Libowitzky, E. & Pertlik, F. (1994): Chemische und röntgenographische Untersuchungen an Eskimoit (~Ag7Pb10Bi15S36) und Heyrovskyit (~AgPb10Bi5S18) vomRauriser Goldberg“, Hüttwinkeltal, Land Salzburg. Mitt. Österr. Miner. Ges., 139, 135-142, Wien.        http://members.a1.net/andreas.ertl/ertl_et_al.(1994).pdf

1995

Ertl, A. (1995): Elbait, Olenit, Dravit-Buergerit-Mischkristalle, Dravit, Uvit und ein neuer Al-Turmalin (?) von österreichischen Fundstellen. Mitt. Österr. Miner. Ges., 140, 55-72, Wien.

1997

Ertl, A., Pertlik, F. & Bernhardt, H.-J. (1997): Investigations on olenite with excess boron from the Koralpe, Styria, Austria. Österr. Akad. Wiss., Math.-naturw. Kl., Abt. I, Anzeiger, 134, 3-10, Wien. http://hw.oeaw.ac.at/buecher/files/1997/pdffile/01-A05I.pdf  http://webmineral.com/specimens/picshow.php?id=%20859

1998

Ertl, A. & Brandstätter, F. (1998): Olenit mit Borüberschuß aus einem Metapegmatit östlich der Stoffhütte, Koralpe, Steiermark, Österreich. Mitt. Abt. Miner. Landesmuseum Joanneum, 62/63, 3-21, Graz. http://members.a1.net/andreas.ertl/ertl&brandstätter(1998).pdf

Ertl, A. & Pertlik, F. (1998): Replacement of silicon by boron in the tetrahedral positions of phyllosilicate structures. Scripta Fac. Sci. Nat. Univ. Masaryk. Brun., 26 (1996), 67-68, Brno. (Scripta Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis)    http://members.a1.net/andreas.ertl/ertl&pertlik(1998).pdf

1999

Bernhardt, H.-J., Brandstätter, F., Ertl, A., Körner, W., Mikenda, W. & Pertlik, F. (1999): Untersuchungen an einem borhaltigen Muskovit-2M1 von der Koralpe, Steiermark. Ann. Naturhist. Mus. Wien, 100 A (1998), 1-11, Wien. http://www.nhm-wien.ac.at/d/verlag/annalenA.html

http://members.a1.net/andreas.ertl/bernhardt_et_al.(1999).pdf

Ertl, A. (1999): Nachruf auf Hofrat Dr. Peter Beck-Mannagetta. Mitt. Österr. Geol. Ges., 90 (1997), 207-212, Wien. http://www.geol-ges.at/mitt-90.htm http://members.a1.net/andreas.ertl/ertl(1999).pdf

2000

Ertl, A. & Heede, H.-U. (2000): Haben einige Eklogite der Typuslokalität in der Sau- und Koralpe außer der eo-Alpinen Metamorphose auch eine permische und eine variszische Metamorphose erlebt? Mitt. Abt. Miner. Landesmuseum Joanneum, 64/65, 5-22, Graz.   http://members.a1.net/andreas.ertl/ertl&heede(2000).pdf

Hughes, J.M., Ertl, A., Dyar, M.D., Grew, E.S., Shearer, C.K., Yates, M.G. & Guidotti, C.V. (2000): Tetrahedrally coordinated boron in a tourmaline: boron-rich olenite from Stoffhütte, Koralpe, Austria. Can. Mineral., 38, 861-868. http://pubs.nrc-cnrc.gc.ca/mineral/86138-4.html http://webmineral.com/specimens/picshow.php?id=%20859

Ertl, A. (2000): Druckabschätzungen in Metabasiten und Metapeliten mittels des Pyropanteiles in Granaten (engl. transl.: Pressure determination from metabasites and metapelites by using the pyrope component of garnets). 21 pp., Eigenverlag, Wien. http://members.a1.net/andreas.ertl/ertl(2000).pdf

2001

Ertl, A., Hughes, J.M. & Marler, B. (2001): Empirical formulae for the calculation of <T-O> and X-O2 bond lengths in tourmaline and relations to tetrahedrally-coordinated boron. N. Jb. Miner. Mh., 2001(12), 548-557.

Ertl, A., Pertlik, F. & Bernhardt, H.-J. (2001): Hellblaue Olenit-Schörl-Dravit Mischkristalle von Ebersdorf, Niederösterreich: Chemismus und Kristallstruktur. Mitt. Österr. Miner. Ges., 146, 75-77.

Kalt, A., Schreyer, W., Ludwig, T., Prowatke, S., Bernhardt, H.-J. & Ertl, A. (2001): Complete solid solution between magnesian schorl and lithian excess-boron olenite in a pegmatite from Koralpe (eastern Alps, Austria). Eur. J. Mineral., 13, 1191-1205. 

            http://hermia.ingentaselect.com/vl=8506372/cl=37/nw=1/rpsv/cgi-bin/linker?ini=schweiz&reqidx=/cw/schweiz/09351221/v13n6/s18/p1191

2002

Ertl, A. & Hughes, J.M. (2002): The crystal structure of an aluminum-rich schorl overgrown by boron-rich olenite from Koralpe, Styria, Austria. Mineral. Petrol., 75, 1-2, 69-78. http://springerlink.metapress.com/app/home/contribution.asp?wasp=cbflykxvmq6j8u1trg3h&referrer=parent&backto=issue,4,8;journal,15,29;linkingpublicationresults,1:105515,1

Ertl, A., Hughes, J.M., Pertlik, F., Foit F.F. Jr., Wright, S.E., Brandstätter, F. & Marler, B. (2002): Polyhedron distortions in tourmaline. Can. Mineral., 40, 153-162. http://pubs.nrc-cnrc.gc.ca/mineral/tcm-15340-1.html

Marler, B. & Ertl, A. (2002): Nuclear magnetic resonance and infrared spectroscopic study of excess-boron olenite from Koralpe, Styria, Austria. Am. Mineral., 87, 364-367. http://www.minsocam.org/MSA/AmMin/TOC/Abstracts/2002_Abstracts/FM02_Abstracts/Marler_p364_02.pdf

Schreyer, W., Hughes, J.M., Bernhardt, H.-J., Kalt, A., Prowatke, S. & Ertl, A. (2002): Reexamination of olenite from the type locality: detection of boron in tetrahedral coordination. Eur. J. Mineral., 2002, 14, 935-942. http://www.ingenta.com/isis/searching/ExpandTOC/ingenta?issue=pubinfobike://schweiz/ejm/2002/00000014/00000005&index=8

2003

Pertlik, F., Ertl, A., Körner, W., Brandstätter, F. & Schuster, R. (2003): Na-rich dravite in the marbles from Friesach, Carinthia, Austria: Chemistry and crystal structure. N. Jb. Miner. Mh., 2003(6), 277-288. http://titania.ingentaselect.com/vl=9499528/cl=16/nw=1/rpsv/cw/schweiz/00283649/v2003n6/s3/p277

Ertl, A., Hughes, J.M., Prowatke, S., Rossman, G.R., London, D. & Fritz, E.A. (2003):  Mn-rich tourmaline from Austria: structure, chemistry, optical spectra, and relations to synthetic solid solutions. Am. Mineral., 88, 1369-1376. http://pegmatopia.ou.edu/Recent%20Publications/docs/Mn-rich%20tourmaline%20Am%20Min.pdf  http://minerals.gps.caltech.edu/Manuscripts/2003/Austrian_Mn_olenite/Index.htm

Prowatke, S., Ertl, A. & Hughes, J.M. (2003): Tetrahedrally-coordinated Al in Mn-rich, Li- and Fe-bearing olenite from Eibenstein an der Thaya, Lower Austria: A chemical and structural investigation. N. Jb. Miner. Mh., 2003(9), 385-395. http://www.ingenta.com/isis/searching/ExpandTOC/ingenta?issue=pubinfobike://schweiz/njmm/2003/00002003/00000009&index=1

Ertl, A., Hughes, J.M., Brandstätter, F., Dyar, M.D. & Prasad, P.S.R. (2003): Disordered Mg-bearing olenite from a granitic pegmatite from Goslarn, Austria: A chemical, structural, and infrared spectroscopic study. Can. Mineral., 41, 1363-1370. http://pubs.nrc-cnrc.gc.ca/mineral/tcm-136341-6.html

2004

Hughes, J.M., Ertl, A., Dyar, M.D., Grew, E.S., Wiedenbeck, M. & Brandstätter, F. (2004): Structural and chemical response to varying [4]B content in zoned Fe-bearing olenite from Koralpe, Austria. Am. Mineral., 89, 447-454. http://www.minsocam.org/MSA/AmMin/TOC/Abstracts/2004_Abstracts/FM04_Abstracts/Hughes_p447_04.pdf

Ertl, A., Schuster, R., Prowatke, S., Brandstätter, F., Ludwig, T., Bernhardt, H.-J., Koller, F. & Hughes J.M. (2004): Mn-rich tourmaline and fluorapatite in a Variscan pegmatite from Eibenstein an der Thaya, Bohemian massif, Lower Austria. Eur. J. Mineral., 16, 551-560. http://www.ingenta.com/isis/searching/ExpandTOC/ingenta?issue=infobike://schweiz/ejm/2004/00000016/00000003&index=17

Hughes, J.M., Ertl, A., Bernhardt, H.-J., Rossman, G.R. & Rakovan, J. (2004): Mn-rich fluorapatite from Austria: Crystal structure, chemical analysis, and spectroscopic investigations. Am. Mineral., 89, 629­-632.

            http://www.users.muohio.edu/rakovajf/Mn%20rich%20fluorapatite%20from%20Austria.pdf  http://minerals.gps.caltech.edu/Manuscripts/2004/Mn_apatite/Index.htm

Ertl, A., Hughes, J.M. & Wagner, A. (2004): Mn-reicher Olenit, Mn-reicher Fluorapatit, Topas, Kassiterit und rosa Muskovit aus einem Pegmatit bei Eibenstein an der Thaya, NÖ. – MEFOS (Vereinsmitteilungen VOÖM), 28, 6-9, Wien. http://members.a1.net/andreas.ertl/ertl_et_al.(2004).pdf 

Marschall, H.R., Ertl, A., Hughes, J.M. & McCammon, C. (2004): Metamorphic Na- and OH-rich disordered dravite with tetrahedral boron, associated with omphacite, from Syros, Greece: chemistry and structure. Eur. J. Mineral., 16, 817-823.

            http://titania.ingentaselect.com/vl=8147149/cl=42/nw=1/rpsv/cgi-bin/linker?ini=schweiz&reqidx=/cw/schweiz/09351221/v16n5/s11/p817

Ertl, A., Pertlik, F., Dyar, M.D., Prowatke, S., Hughes, J.M., Ludwig, T. & Bernhardt, H.-J. (2004): Fe-rich Olenite with tetrahedrally coordinated Fe3+ from Eibenstein, Austria: Structural, chemical, and Mössbauer data. Can. Mineral., 42, 1057-1063. http://pubs.nrc-cnrc.gc.ca/mineral/tcm-105742-4.html

2005

Ertl, A., Rossman, G.R., Hughes, J.M., Prowatke, S. & Ludwig, T. (2005): Mn-bearing “oxy-rossmanite” with tetrahedrally-coordinated Al and B from Austria: structure, chemistry, and infrared and optical spectroscopic study. Am. Mineral., 90, 481-487.

            http://ammin.geoscienceworld.org/cgi/content/full/90/2-3/481#GILLER-2003 http://131.215.067.048/rossmanite/Austria_Eibenstein/Austria-index.htm

Fuchs, Y., Ertl, A., Hughes, J.M., Prowatke, S., Brandstätter, F. & Schuster, R. (2005): Dumortierite from the Gföhl unit, Lower Austria: chemistry, structure, and infra-red spectroscopy. Eur. J. Mineral., 17, 173-183. http://caliban.ingentaselect.com/vl=1959822/cl=123/nw=1/rpsv/cw/schweiz/09351221/v17n1/s17/p173

Ertl, A., Pertlik, F., Prem, M., Post, J.E., Kim, S.J., Brandstätter, F. & Schuster, R. (2005): Ranciéite crystals from Friesach, Carinthia, Austria. Eur. J. Mineral., 17, 163-172. http://caliban.ingentaselect.com/vl=1959822/cl=123/nw=1/rpsv/cw/schweiz/09351221/v17n1/s16/p163

2006

Ertl, A. & Wagner, A. (2006): Topas, Beryll und Ferrotantalit aus einem Pegmatit bei Heidenreichstein, Niederösterreich. Eigenverlag, Wien.

            http://members.a1.net/andreas.ertl/ertl&wagner(2006).pdf

London, D., Ertl, A., Hughes, J.M., Morgan VI, G.B., Fritz, E.A. & Harms, B.S. (2006): Synthetic Ag-rich tourmaline: structure and chemistry. Am. Mineral., 91, 680-684. http://www.minsocam.org/msa/ammin/toc/Abstracts/2006_Abstracts/Apr06_Abstracts/London_p680_06.pdf 

Cempírek, J., Novák, M., Ertl, A., Hughes, J.M., Rossman, G.R. & Dyar, M.D. (2006): Fe-bearing olenite with tetrahedrally coordinated Al from an abyssal pegmatite of the Bohemian massif at Kutná Hora: Structure, crystal chemistry, and optical spectra. Can. Mineral., 44, 23-30.

            http://pubs.nrc-cnrc.gc.ca/mineral/tcm-02344-1.html

Ertl, A. (2006): Über die Etymologie und die Typlokalitäten des Minerals Schörl. Mitt. Österr. Miner. Ges., 152, 7-16.

            http://www.uibk.ac.at/mineralogie/oemg/bd_152/152_07-16.pdf

Ertl, A., Hughes, J.M., Prowatke, S., Ludwig, T., Prasad, P.S.R., Brandstätter, F., Körner, W., Schuster, R., Pertlik, F. & Marschall, H. (2006): Tetrahedrally-coordinated boron in tourmalines from the liddicoatite-elbaite series from Madagascar: Structure, chemistry, and infrared spectroscopic studies. Am. Mineral., 91, 1847-1856. http://www.minsocam.org/msa/ammin/toc/Abstracts/2006_Abstracts/ND06_Abstracts/Ertl_p1847_06.pdf

Ertl, A., Kolitsch, U., Prowatke, S., Dyar, M.D. & Henry, D.J. (2006): The F-analogue of schorl from Grasstein, Trentino – South Tyrol, Italy: crystal structure and chemistry. Eur. J. Mineral., 18, 583-588.  http://www.ingentaconnect.com/content/schweiz/ejm/2006/00000018/00000005/art00006  

Ertl, A., Rossman, G.R., Hughes, J.M., Wang, Y., O’Leary, J., Dyar, M.D., Prowatke, S. & Ludwig, T. (2006): Elbaite from the Himalaya Mine, Mesa Grande, California. Gems & Gemol., 42, 96. http://www.gia.edu/gemsandgemology/1423/26983/2613/issues_table_of_contents_article_detail.cfm

2007

Ertl, A. (2007): Über die Typlokalität und die Nomenklatur des Minerals Dravit (About the type locality and the nomenclature of dravite). Mitt. Österr. Miner. Ges., 153, 265-271. http://www.uibk.ac.at/mineralogie/oemg/bd_153/153_265-271x.pdf

Ertl, A. & Prem, M. (2007): Late-stage hydrothermal alteration products occurring in the Stewart Mine, San Diego Co., California, U.S.A. Mitt. Österr. Miner. Ges., 153, 273-274. http://www.uibk.ac.at/mineralogie/oemg/bd_153/153_273-274x.pdf

Ertl, A., Hughes, J.M., Prowatke, S., Ludwig, T., Brandstätter, F., Körner, W. & Dyar, M.D. (2007): Tetrahedrally-coordinated boron in Li-bearing olenite frommushroomtourmaline from Momeik, Myanmar. Can. Mineral., 45, 891-899. http://pubs.nrc-cnrc.gc.ca/mineral/tcm-89145-4.html

Ertl, A. & Rossmann, G.R. (2007): Preliminary study of higher-temperature treatment of canary tourmaline. Gems & Gemol., 44, 322.

2008

Ertl, A., Rossman, G.R., Hughes, J.M., Ma, C. & Brandstätter, F. (2008): V3+-bearing, Mg-rich, strongly disordered olenite from a graphite deposit near Amstall, Lower Austria: A structural, chemical and spectroscopic investigation. N. Jb. Miner. Abh., (in press).

Hughes, J.M., Ertl, A., Bernhardt, H.-J., Rakovan, J. & Rossman, G.R. (2008): Vanadium-rich muscovite from Austria: crystal structure, chemical analysis, and spectroscopic investigations. Can. Mineral., (in review).

 

 

 

If you are interested in reprints (pdf-files) of these papers, feel free to send me an email:  

a n d r e a s . e r t l (*) a 1 . n e t 

[Note: (*) = @, email address without spaces].

If you want to know more about tourmaline, if you have special questions, or if you think you have unusual tourmaline samples, please send me an email!

 

ADDITIONAL DATA

 

Structural and chemical data of Cu-bearing elbaite from Paraiba, Brazil; additional data to Ertl et al. (2002): Polyhedron distortions in tourmaline. Can. Mineral., 40, 153-162.  http://members.a1.net/andreas.ertl/elbaite(Cu)_add_data.pdf

 

Lectures and Posterpresentations

 

1987, 31. Aug. Lecture (in English) at the Dinosour Museum, Brisbane, Queensland, Australia, for the Mineralogical Society of Queensland about “Minerals from Austria.

 At the Dinosour Museum, with the president of the Mineralogical Society of Queensland (1987)

1998, 13. Nov.  Lecture (in German) at the University of Graz, Graz, Styria, Austria, Institut für Mineralogie-Kristallographie und Petrologie, for the “1. Kor-Saualm Workshop about boron-rich olenite from Koralpe: „Interpretation der Mineralogie von Turmalin mit Relevanz zur metamorphen Entwicklung des Koralpen Kristallins“ (Interpretation of the chemical composition from tourmaline in relation to the metamorphic evolution of the Koralpe).

1999, 22. Sept. Lecture (in English) at the Université Pierre et Marie Curie, Paris, France, Laboratoire de MinéralogieCristallographie, for the “2nd European Workshop on Tourmaline and Borosilicates about „Replacement of silicon by boron in tourmaline- and mica type structures“.

2000, 28. Sept. Lecture (in German) and posterpresentation at the University of Heidelberg, Heidelberg, Germany, for the DMG-Tagung about Tetraedrisch koordiniertes Bor in natürlichem Turmalin und Muskovit“ (tetrahedrally-coordinated boron in natural tourmaline and muscovite).

2001, 27. May  Lecture (in German) at the University of Vienna, Vienna, Austria, Geozentrum, Room 2A122, about „Pegmatite in der KoralpeVierkoordiniertes Bor im Turmalin“ (Pegmatites from the Koralpe – four-coordinated boron in tourmaline).

2001, 25. Sept. Posterpresentation at the University of Vienna, Vienna, Austria, Geozentrum, for the MinPet Tagung 2001 about Hellblaue Olenit-Schörl-Dravit Mischkristalle von Ebersdorf, Niederösterreich“ (lightblue olenite-schorl-dravite tourmaline crystals from Ebersdorf, Lower Austria) (Ertl, Pertlik & Bernhardt).

2002, 25. Mar. Posterpresentation at the Eidgenössische Technische Hochschule (ETH), Zürich, Schweiz, for the Ninth International Symposium on Experimental Mineralogy, Petrology and Geochemistry – EMPG IX about “Tetrahedral boron in olenite from the type locality(Schreyer, Ertl, Hughes, Bernhardt, Kalt & Prowatke) and co-author of the poster “Structural and chemical response to varying [4]B content in olenite from the Koralpe(Hughes, Ertl, Dyar, Grew & Brandstätter). http://www.the-conference.com/JConfAbs/7/pdfs/92.pdf

2002, 13. Nov. Lecture (in English) at the Miami University, Oxford, Ohio, U.S.A., Shideler Hall, about “Tetrahedral boron in tourmalines, where it is, and how to find it“.

2003, 20.-23. June  Posterpresentation at the International Symposium on Light Elements in Rock-forming Minerals LERM 2003 in Nové Město na Moravě, Moravia, Czech Republic, about Tetrahedrally-coordinated boron in liddicoatite from Madagascar” (Ertl & Hughes) and co-author of the poster Mn-rich tourmaline from the Moldanubicum in Austria: Structure and chemistry” (Hughes, Ertl, Prowatke & Rossman). 

2003, 20. Nov. Lecture (in English) at the Comenius University, Bratislava, Slovakia, Mlynská dolina, Faculty of Natural Sciences, Room B1-501, about “Tourmaline – unusual compositions and interesting structural details”.

2004, 30. Mar. Lecture (in English) at the Miami University, Oxford, Ohio, U.S.A., Shideler Hall (12:00 am), about “Tourmaline – News from the tourmaline group”.

2004, 5. April    Lecture (in English) at the University of Massachusetts, South Hadley, Massachusetts, U.S.A., Morrell Science Building (10:10 am), about “Tourmaline – News from the tourmaline group”.

2004, 12. April Lecture (in English) at the American Museum of Natural History, New York City, U.S.A. (1:00 pm), about “Tourmaline – News from the tourmaline group”.

2004, 14. April Lecture (in English) at the Smithsonian Institution, National Museum of Natural History, Washington, D.C., U.S.A., Fourth Floor East Wing, Mineral Sciences Seminar Room, E410 (10:00 am), about “Tourmaline – News from the tourmaline group”.

2004, 20. April  Lecture (in English) at the Louisiana State University, Baton Rouge, Louisiana, U.S.A., Howe-Russell Geoscience Complex, E208 (3:30 pm), about “Tourmaline – News from the tourmaline group”.

2004, 23. April   Lecture (in English) at the University of Oklahoma, Norman, Oklahoma, U.S.A., Sarkeys Energy Center, Room 830 (9:00 am), about “Tourmaline – News from the tourmaline group”.

2004, 30. April   Lecture (in English) at the Pasadena City College, Pasadena, California, U.S.A., 1570 E. Colorado Blvd., Geology Department, Building E, Room 220 (7:30 pm), for the Mineralogical Society of Southern California, about “Tourmaline – News from the tourmaline group”. http://www.mineralsocal.org/bulletin/2004_apr.htm http://www.mineralsocal.org/bulletin/2004_june.htm 

2005, 3. June    Lecture (in German) at the University of Vienna, Vienna, Austria, Geozentrum, Room 2A122 (11:15 am), about "Zur Struktur Al-reicher Turmaline" (About the structure of Al-rich tourmaline).

2006, 5. May    Lecture (in German) at the University of Vienna, Vienna, Austria, Geozentrum, Room 2A122 (11:15 am), about "Dumortierit und seine Substitutionen" (Dumortierite and its substitutions). http://www.univie.ac.at/Mineralogie/vortraeg.htm

2006, 26. Aug.  Lecture (in English) at the Manchester Grand Hyatt San Diego Hotel, San Diego, California, U.S.A., Randle Ballroom A/B (11:50 am), for the Gemological Research Conference (GRC) (hosted by GIA) about Elbaite from the Himalaya Mine, Mesa Grande, California” (General Gemology). http://lgdl.gia.edu/pdfs/grcprogram.pdf

2006, 1. Dec.    Lecture (in German) at the University of Vienna, Vienna, Austria, Geozentrum, Room 2A122 (11:15 am), about "Turmaline der Liddicoatit-Elbait Reihe” (Tourmalines from the liddicoatite-elbaite series). http://www.univie.ac.at/Mineralogie/vortraeg.htm

                         

                          University of Vienna, Geozentrum, with Prof. Ekkehart Tillmanns

2007, 31. May  Lecture (in German) at the University of Vienna, Vienna, Austria, Geozentrum, Room 2B204 (Eberhard Clar-Saal) (3:30 pm), about “Al- und B-reiche Turmaline: Mineralogie und Vorkommen” (Al- and B-rich tourmalines: Mineralogy and occurrence).

2007, 23. Aug.  Lecture (in English) at the University of Cologne