Paul Keller (mineralogist)

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Paul Keller (born July 27, 1940 in Sărata, Romania ) is a German mineralogist and specialist in mineralization in granite pegmatites, crystal chemistry of oxidic minerals and the occurrence and genesis of oxidic secondary minerals. He lives in Stuttgart in Baden-Württemberg .

Live and act

Paul Keller studied mineralogy at the Technical University of Stuttgart, later the University of Stuttgart , and was a student of Johannes-Erich Hiller . After his studies and his doctorate in 1967 with the subject of quantitative, X-ray phase analysis of various types of rust , he became an academic advisor at the University's Mineralogical Institute. On February 7, 1973 , Keller completed his habilitation at the University of Stuttgart with a thesis on the crystal chemistry of phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water and received the license to teach (venia legendi) for the subject from the Department of Geosciences and Biosciences Mineralogy. The habilitation thesis appeared in four parts in the German science magazines New Yearbook for Mineralogy - Monthly Issues and New Yearbook for Mineralogy - Treatises .

In 1980 he was appointed Professor of Mineralogy at the Institute for Mineralogy and Crystal Chemistry at the University of Stuttgart. From his appointment to his retirement in 2006, Keller represented crystallography and crystal chemistry in Stuttgart with a focus on the genesis and structure elucidation of oxide minerals, theoretical crystal chemistry as well as mineral and raw material deposits in pegmatites. During the same period he was in charge of the mineralogical collection of the Institute for Mineralogy and Crystal Chemistry. Keller was dean of the Faculty of Geosciences and Biosciences at the University of Stuttgart. Since 1987 Paul Keller was the successor of Sigmund Koritnig German representative and a voting member in the "Commission on New Minerals and Mineral Names" (CNMMN) of the International Mineralogical Association (IMA). He held this position until April 2016 - since then Thomas Witzke has taken on this role .

His research areas were:

  • Corrosion products of iron
  • Crystal chemistry of the oxidic minerals, especially the phosphate and arsenate minerals, as well as determination of the crystal structure of oxidic minerals
  • Granite pegmatites and their mineralization, in particular of phosphates, as well as the genesis and formation of deposits and the skeletal growth of phosphate minerals
  • Clay mineralogy to solve engineering-geological problems such as determination of the degree of weathering of claystones, radiographic clay mineral and sediment investigations as well as gypsum / anhydrite and ettringite / thaumasite determination
  • Occurrence and genesis of oxidic secondary minerals, especially the Tsumeb deposit / Namibia, which led to numerous initial descriptions of minerals.

As the author of more than one hundred publications on new minerals, their crystal chemistry, crystallography and mineralogy, Keller is one of the most productive and successful first descriptors of minerals in Germany. Alone or together with specialist colleagues, he was involved in the discovery and description of a total of 22 new minerals to date. These include:

  1. 1979 Queitit together with Pete J. Dunn and Heinz Hess
  2. 1979 Koritnigit together with Heinz Hess, Peter Süsse , Günter Schnorrer and Pete J. Dunn
  3. 1979 the Warikahnit together with Heinz Hess and Pete J. Dunn
  4. 1979 the Giniit
  5. 1981 Otjisumeit together with Heinz Hess and Pete J. Dunn
  6. 1981 Jamesit together with Heinz Hess and Pete J. Dunn
  7. 1981 O'Danielit together with Heinz Hess, Pete J. Dunn and Dale E. Newbury
  8. 1981 of Bartelkeit together with Heinz Hess and Pete J. Dunn
  9. 1981 Lammerit together with Werner H. Paar and Pete J. Dunn
  10. 1982 Johillerit together with Heinz Hess and Pete J. Dunn
  11. 1982 Plumbotsumit together with Pete J. Dunn
  12. 1982 the Arsendescloizit together with Pete J. Dunn
  13. 1984 the Scotlandite together with Werner H. Paar, Richard SW Braithwaite and Tzong Tzy Chen
  14. 1986 the Mathewrogersit together with Pete J. Dunn
  15. 1986 Chenit together with Werner H. Paar, Kurt Mereiter , Richard SW Braithwaite and Pete J. Dunn
  16. 1986 the zinc roselite together with John Innes and Pete J. Dunn
  17. 1990 the Damarait together with Alan J. Criddle , Chris J. Stanley and John Innes
  18. 1991 the Barstowit together with Chris J. Stanley, Gary C. Jones , Alan D. Hart , David Lloyd
  19. 1997 Staněkit together with François Fontan , Francisco Velasco Roldan and Joan Carles Melgarejo I Draper
  20. 2001 the Ekatit
  21. 2005 the Ferrorosemaryit together with Frédéric Hatert , Pierre Lefèvre , André-Mathieu Fransolet , Marie-Rose Spirlet , Leila Rebbouh and François Fontan
  22. 2007 Joosteit together with François Fontan, Francisco Velasco Roldan, Philippe de Parseval

13 of the 22 minerals first described by Keller come from the “ Tsumeb Mine ” near Tsumeb in Namibia , five more were first described from other Namibian localities. This already shows that Keller has dedicated a large part of his scientific work to discovery sites in Namibia and there above all to the minerals of the "Tsumeb Mine". He also wrote several detailed papers on this location.

In pegmatite research, his main focus was also on the pegmatites in Namibia. He has published summarizing articles on the central namibian pegmatites in the vicinity of Usakos and Karibib . Three of the minerals first described by him are phases from central namibian pegmatites. Together with André-Mathieu Fransolet and François Fontan, Keller examined the aluminum phosphates of the pegmatites "Rubindi" and "Kabilizi" near Gatumba in Rwanda . Pegmatites in Spain , e.g. B. “Cañada” near Salamanca and “Pinilla de Fermoselle” near Zamora , he edited together with Encarnación Roda , Alfonso Pesquera and François Fontan.

A compilation of the publications by Paul Keller up to 2007 can be found at www.uni-stuttgart.de and in the articles by William B. Simmons and Pietro Vignola honoring him.

Paul Keller is married to Adelheid "Gini" Keller (* 1940), after whom a mineral ( Giniit ) is also named.

Honors

  • In his honor, "in recognition of his extensive contributions to mineralogy, especially the mineralogy of the secondary minerals from ore deposits" , named Pete J. Dunn, Joel D. Grice , Frederick J. Wicks and Robert A. Gault in 1988 Bismuth - iron - phosphate as Paulkellerite newly discovered on collection material from Schneeberg in Saxony .
  • At the 6th International Symposium on Granite Pegmatites (PEG 2013) the Phosphate Theme Session was dedicated to François Fontan, André-Mathieu Fransolet and Paul Keller. The three pegmatite researchers had published several joint works in the 1980s and 1990s. This included an extensive article on the phosphate mineral association of the Tsaobismund pegmatite in Namibia.
  • In April 2014, a special issue of The Canadian Mineralogist dedicated to Paul Keller (as well as François Fontan and André-Mathieu Fransolet) was published with the title Pegmatitic Phosphate: A Tribute to François Fontan, André-Mathieu Fransolet, and Paul Keller .

Fonts (selection)

  • Paul Keller: Quantitative, X-ray phase analysis of different types of rust (dissertation from June 16, 1967) . Technical university, faculty for nature and Humanities, Stuttgart 1967 (from: Werkstoffe u. Korrosion Vol. 18, Issue 10, 1967).
  • Paul Keller: Quantitative, X-ray phase analysis of different types of rust (paper approved by the Technical University of Stuttgart to obtain the title of Doctor of Natural Sciences (Dr. rer. Nat.)) . In: Materials and Corrosion . tape 18 , no. 10 , 1967, p. 865–878 , doi : 10.1002 / maco.19670181002 ( wiley.com [PDF; 1.6 MB ; accessed on August 15, 2018]).
  • Paul Keller: The crystal chemistry of the phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part I: The anions of the phosphate and arsenate minerals . In: New yearbook for mineralogy, monthly books . tape 1971 , no. 12 , 1971, p. 491-510 .
  • Paul Keller: The crystal chemistry of the phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part II: The cation coordination polyhedra and their connection as well as a new classification option . In: New Yearbook for Mineralogy, Treatises . tape 117 , no. 3 , 1972, p. 217-252 .
  • Paul Keller: The crystal chemistry of the phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part III: The charge balance of ligands and cation coordination polyhedra by deforming the coordination polyhedra and the charge distribution of the cations . In: New Yearbook for Mineralogy, Treatises . tape 119 , no. 3 , 1973, p. 310-334 .
  • Paul Keller: The crystal chemistry of the phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part IV: The importance of hydrogen bonds for the phosphate and arsenate minerals . In: New Yearbook for Mineralogy, Treatises . tape 120 , no. 3 , 1974, p. 229-269 .
  • Paul Keller: Tsumeb / Namibia - one of the most spectacular mineral discovery sites on earth . In: Lapis . tape 9 , no. 7-8 , 1984, pp. 13-62 .
  • Paul Keller, Wolfgang Bartelke: Tsumeb! New minerals and their associations . In: The Mineralogical Record . tape 13 , no. 3 , 1982, pp. 137-147 .
  • Paul Keller: Paragenesis: Assemblages, Sequences, Associations . In: The Mineralogical Record . tape 8 , no. 3 , 1977, pp. 38-47 .
  • Paul Keller: The occurrence of Li-Fe-Mn phosphate minerals in granitic pegmatites of Namibia . In: Communications Geological Survey Namibia . tape 7 , 1991, pp. 21–35 ( gov.na [PDF; 2.1 MB ; accessed on August 15, 2018]).
  • Gabi Schneider, Thomas Becker, Ludi von Bezing, Rolf Emmermann, Steven Frindt, Dougal Jerram, John Kandara, Paul Keller, John Kinahan, Jürgen Kirchner, Volker Lorenz, Volker Petzel, Martin Pickford, Dieter Plöthner, Herbert Roesener, Axel Schmitt, Brigitte Senut, Pete Siegfried, Bernd Teigler, John Ward, Markus Wigand: The Roadside Geology of Namibia (Geological Guides Collection, Vol. 97) . 2nd Edition. Bornträger Brothers, Stuttgart 2008, ISBN 978-3-443-15084-6 , p. 1–294 (first edition: 2003).

literature

  • Ulrich Kull: History of Earth and Life Sciences . In: Johannes H. Voigt (Ed.): Festschrift for the hundred and fifty years of existence of the University of Stuttgart . 1st edition. Deutsche Verlags-Anstalt, Stuttgart 1979, ISBN 3-421-01937-1 , p. 277–329 , doi : 10.18419 / opus-2248 ( researchgate.net [PDF; 21.0 MB ; accessed on August 9, 2018]).
  • Anonymous: Preface: Phosphate Theme Session Dedicated to: François Fontan, André-Mathieu Fransolet and Paul Keller . In: William B. Simmons, Karen L. Webber, Alexander U. Falster, Encarnación Roda-Robles, Sarah L. Hanson, María Florencia Márquez-Zavalía, Miguel Ángel Galliski (eds.): Contributions to the 6th International Symposium on Granitic Pegmatites , May 26 - June 2, 2013 . PEG 2013 New Hampshire and Maine. 2013, p. ii – iii (English, uno.edu [PDF; 9.5 MB ; accessed on August 15, 2018]).
  • Pete J. Dunn, Joel D. Grice, Frederick J. Wicks, Robert A. Gault: Paulkellerite, a new bismuth iron phosphate mineral from Schneeberg, Germany . In: The American Mineralogist . tape 73 , 1988, pp. 870–872 ( rruff.info [PDF; 290 kB ; accessed on August 15, 2018]).
  • Pietro Vignola, Frédéric Hatert, Encarnación Roda-Robles, William B. Simmons, Carl A. Francis: Pegmatitic Phosphate: A Tribute to François Fontan, André-Mathieu Fransolet, and Paul Keller . In: The Canadian Mineralogist . tape 52 , no. 2 , 2014, p. 121–128 , doi : 10.3749 / canmin.52.2.121 ( [1] [PDF; 1,2 MB ; accessed on August 15, 2018]).

Web links

Individual evidence

  1. ↑ Paul Keller: Quantitative, X-ray phase analysis of various types of rust (paper approved by the Technical University of Stuttgart to obtain the title of Doctor of Natural Sciences (Dr. rer. Nat.)) . In: Materials and Corrosion . tape 18 , no. 10 , 1967, p. 865–878 , doi : 10.1002 / maco.19670181002 ( wiley.com [PDF; 1.6 MB ; accessed on August 15, 2018]).
  2. ↑ a b Ulrich Krull: History of the geo- and biosciences . In: Johannes H. Voigt (Ed.): Festschrift for the hundred and fifty years of existence of the University of Stuttgart . 1st edition. Deutsche Verlags-Anstalt, Stuttgart 1979, ISBN 3-421-01937-1 , p. 277–329 , doi : 10.18419 / opus-2248 ( researchgate.net [PDF; 21.0 MB ; accessed on August 9, 2018]).
  3. ↑ Anonymous: Personalia . In: New yearbook for mineralogy, monthly books . tape 1973 , 1973, pp. 148 .
  4. ↑ Paul Keller: The crystal chemistry of phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part I: The anions of the phosphate and arsenate minerals . In: New yearbook for mineralogy, monthly books . tape 1971 , no. 12 , 1971, p. 491-510 .
  5. ↑ Paul Keller: The crystal chemistry of phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part II: The cation coordination polyhedra and their connection as well as a new classification option . In: New Yearbook for Mineralogy, Treatises . tape 117 , no. 3 , 1972, p. 217-252 .
  6. ↑ Paul Keller: The crystal chemistry of phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part III: The charge balance of ligands and cation coordination polyhedra by deforming the coordination polyhedra and the charge distribution of the cations . In: New Yearbook for Mineralogy, Treatises . tape 119 , no. 3 , 1973, p. 310-334 .
  7. ↑ Paul Keller: The crystal chemistry of phosphate and arsenate minerals with special consideration of the cation coordination polyhedra and the crystal water. Part IV: The importance of hydrogen bonds for the phosphate and arsenate minerals . In: New Yearbook for Mineralogy, Treatises . tape 120 , no. 3 , 1974, p. 229-269 .
  8. ↑ a b Institute for Mineralogy and Crystal Chemistry at the University of Stuttgart (as of July 2002)
  9. ↑ a b c d University of Stuttgart - employee page Professor Paul Keller
  10. ↑ Reiner Klemd: Society News: German Mineralogical Society: From the president . In: Elements . tape 13 , no. 1 , 2017, p. 52 ( elementsmagazine.org [PDF; 335 kB ; accessed on August 15, 2018]).
  11. ^ Paul Keller, Pete J. Dunn, Heinz Hess: Queitite, P 4 Zn 2 [SO 4 | SiO 4 | Si 2 O 7 ], a new mineral from Tsumeb, South West Africa . In: New yearbook for mineralogy, monthly books . tape 1979 , no. 5 , 1979, pp. 203-209 .
  12. ↑ Paul Keller, Heinz Hess, Peter Süsse, Günter Schnorrer, Pete J. Dunn: Koritnigit, Zn [H 2 O | HOAsO 3 ], a new mineral from Tsumeb, South West Africa . In: Tschermaks Mineralogische und Petrographische Mitteilungen . tape 26 , 1979, pp. 51-58 .
  13. ↑ Paul Keller, Heinz Hess, Pete J. Dunn: Warikahnit, Zn 3 (H 2 O) 2 [(AsO 4 ) 2 ], a new mineral from Tsumeb, South West Africa . In: New yearbook for mineralogy, monthly books . Volume 9, 1979, pp. 389-395 .
  14. ↑ a b Paul Keller: Giniite, Fe 2+ Fe 4 3+ [(H 2 O) 2 | (OH) 2 | (PO 4 ) 4 ], a new mineral from the pegmatite of Sandamab [sic!] Near Usakos, Namibia . In: New yearbook for mineralogy, monthly books . tape 1980 , no. 2 , 1980, p. 49-56 .
  15. ^ Paul Keller, Heinz Hess, Pete J. Dunn: Otjisumeit, PbGe 4 O 9 , a new mineral from Tsumeb, Namibia . In: New yearbook for mineralogy, monthly books . tape 1981 , no. 2 , 1981, p. 49-55 .
  16. ↑ Paul Keller, Heinz Hess, Pete J. Dunn: Jamesite, Pb 2 Zn 2 Fe 3+ 5 O 4 (AsO 4 ) 5 , a new mineral from Tsumeb, Namibia . In: Chemistry of the Earth . tape 40 , 1981, pp. 105-109 .
  17. ↑ Paul Keller, Heinz Hess, Pete J. Dunn, E. Dale Newbury: O ' Danielit, NaZn 3 H 2 (AsO 4 ) 3 , a new mineral from Tsumeb, Namibia . In: New yearbook for mineralogy, monthly books . tape 1981 , no. 4 , 1981, p. 155-160 .
  18. ↑ Paul Keller, Heinz Hess, Pete J. Dunn: Bartelkeit, PbFe 2+ Ge 3 O 8 , a new germanium mineral from Tsumeb, Namibia . In: Chemistry of the Earth . tape 40 , 1981, pp. 201-206 .
  19. ^ Paul Keller, Werner H. Paar, Pete J. Dunn: Lammerite, Cu 3 [AsO 4 ] 2 , a new mineral from Laurani, Bolivia . In: Tschermaks Mineralogische und Petrographische Mitteilungen . tape 28 , 1981, pp. 157-164 .
  20. ↑ Paul Keller, Heinz Hess, Pete J. Dunn: Johillerit, Na (Mg, Zn) 3 Cu (AsO 4 ) 3 , a new mineral from Tsumeb, Namibia . In: Tschermaks Mineralogische und Petrographische Mitteilungen . tape 29 , 1982, pp. 169–175 ( springer.com [PDF; 572 kB ; accessed on August 9, 2018]).
  21. ^ Paul Keller, Pete J. Dunn: Plumbotsumite, Pb 5 (OH) 10 Si 4 O 8 . In: Chemistry of the Earth . tape 41 , 1982, pp. 1-6 .
  22. ^ Paul Keller, Pete J. Dunn: Arsendescloizite a new mineral from Tsumeb . In: Mineralogical Record . tape 13 , no. 3 , 1982, pp. 155–157 ( rruff.info [PDF; 1.7 MB ; accessed on August 15, 2018]).
  23. ^ Werner H. Paar, Richard SW Braithwaite, Tzong Tzy Chen, Paul Keller: A new mineral, scotlandite (PbSO 3 ) from Leadhills, Scotland; the first natural occurring sulphite . In: Mineralogical Magazine . tape 48 , 1984, pp. 283–288 ( rruff.info [PDF; 554 kB ; accessed on August 15, 2018]).
  24. ^ Paul Keller, Pete J. Dunn: Mathewrogersite, a new lead silicate mineral from Tsumeb, Namibia . In: New yearbook for mineralogy, monthly books . tape 1986 , no. 5 , 1986, pp. 203-208 .
  25. ↑ Werner H. Paar, Kurt Mereiter, Richard SW Braithwaite, Paul Keller, Pete J. Dunn: Chenite, Pb 4 Cu (SO 4 ) 2 (OH) 6 , a new mineral, from Leadhills, Scotland . In: Mineralogical Magazine . tape 50 , 1986, pp. 129–135 ( rruff.info [PDF; 454 kB ; accessed on August 15, 2018]).
  26. ^ Paul Keller, John Innes, Pete J. Dunn: Zincroselite, Ca 2 Zn (AsO 4 ) 2 · 2H 2 O, a new mineral from Tsumeb, Namibia . In: New yearbook for mineralogy, monthly books . tape 1986 , no. 11 , 1986, pp. 523-527 .
  27. ^ Alan J. Criddle, Paul Keller, Chris J. Stanley, John Innes: Damaraite, a new lead oxychloride mineral from the Kombat mine, Namibia (South West Africa) . In: Mineralogical Magazine . tape 54 , 1990, pp. 593-598 ( rruff.info [PDF; 303 kB ; accessed on August 15, 2018]).
  28. ↑ Chris J. Stanley, Gary C. Jones, Alan D. Hart, Paul Keller, David Lloyd: Barstowite, 3PbCl 2 · PbCO 3 · H 2 O, a new mineral from Bounds Cliff, St Endellion, Cornwall . In: Mineralogical Magazine . tape 55 , 1991, pp. 122 ( rruff.info [PDF; 629 kB ; accessed on June 11, 2018]).
  29. ↑ a b Paul Keller, François Fontan, Francisco Velasco Roldan, Joan Carles Melgarejo i Draper: Staněkite, Fe 3+ (Mn, Fe 2+ , Mg) (PO 4 ) O, a new phosphate mineral in pegmatites at Karibib (Namibia) and French Pyrénées (France) . In: European Journal of Mineralogy . tape 9 , no. 3 , 1997, p. 475–482 , doi : 10.1127 / ejm / 9/3/0475 ( rruff.info [PDF; 497 kB ; accessed on August 15, 2018]).
  30. ↑ Paul Keller: Ekatite, (Fe 3+ , Fe 2+ , Zn) 12 (OH) 6 [AsO 3 ] 6 [AsO 3 , HOSiO 3 ] 2 , a new mineral from Tsumeb, Namibia, and its crystal structure . In: European Journal of Mineralogy . tape 13 , 2001, p. 767-777 , doi : 10.1127 / 0935-1221 / 2001 / 0013-0769 ( http://rruff.info/uploads/EJM13_769.pdf rruff.info [PDF; 829 kB ]).
  31. ↑ Frédéric Hatert, Pierre Lefèvre, André-Mathieu Fransolet, Marie-Rose Spirlet, Leila Rebbouh, François Fontan, Paul Keller: Ferrorosemaryite, NaFe 2+ Fe 3+ Al (PO 4 ) 3 , a new phosphate mineral from the Rubindi pegmatite, Rwanda . In: European Journal of Mineralogy . tape 17 , 2005, pp. 749-759 , doi : 10.1127 / 0935-1221 / 2005 / 0017-0749 .
  32. ^ A b Paul Keller, François Fontan, Francisco Velasco Roldan, Philippe de Parseval: Joosteite, Mn 2+ (Mn 3+ , Fe 3+ ) (PO 4 ) O: a new phosphate mineral from the Helikon II Mine, Karibib Namibia . In: New Yearbook for Mineralogy, Treatises . tape 183 , no. 2 , 2007, p. 197-201 , doi : 10.1127 / 0077-7757 / 2007/0069 .
  33. ^ Paul Keller: Paragenesis: Assemblages, Sequences, Associations . In: The Mineralogical Record . tape 8 , no. 3 , 1977, pp. 38-47 .
  34. ^ Paul Keller, Wolfgang Bartelke: Tsumeb! New minerals and their associations . In: The Mineralogical Record . tape 13 , no. 3 , 1982, pp. 137-147 .
  35. ↑ Paul Keller: Tsumeb / Namibia - one of the most spectacular mineral discovery sites on earth . In: Lapis . tape 9 , no. 7-8 , 1984, pp. 13-62 .
  36. ^ Paul Keller: Phosphate Minerals from Pegmatites of South West Africa . In: The opening . tape 25 , 1974, p. 577-591 .
  37. ^ Paul Keller, Oleg von Knorring: Pegmatites at the Okatjimukuju farm, Karibib, Namibia, part I: Phosphate mineral associations of the Clementine II pegmatite . In: European Journal of Mineralogy . tape 1 , no. 4 , 1989, pp. 567-594 , doi : 10.1127 / ejm / 1/4/0567 .
  38. ^ Paul Keller: The occurrence of Li-Fe-Mn phosphate minerals in granitic pegmatites of Namibia . In: Communications Geological Survey Namibia . tape 7 , 1991, pp. 21–35 ( gov.na [PDF; 2.1 MB ; accessed on August 15, 2018]).
  39. ^ A b André-Mathieu Fransolet, Paul Keller, François Fontan: The phosphate mineral associations of the Tsaobismund pegmatite, Namibia . In: Contributions to Mineralogy and Petrology . tape 92 , no. 4 , 1986, pp. 502-517 ( springer.com [PDF; 2.5 MB ; accessed on August 15, 2018]).
  40. ↑ a b Encarnación Roda, Paul Keller, Alfonso Pesquera, François Fontan: Micas of the muscovite-lepidolite series from Karibib pegmatites, Namibia . In: Mineralogical Magazine . tape 71 , no. 1 , 2007, p. 41-62 , doi : 10.1180 / min mag.2007.071.1.41 .
  41. ↑ Encarnación Roda, François Fontan, Alfonso Pesquera Pérez, Paul Keller: The Fe-Mn phosphate associations from the Pinilla de Fermoselle pegmatite, Zamora, Spain: occurrence of kryzhanovskite and natrodufrenite . In: European Journal of Mineralogy . tape 10 , no. 1 , 1998, p. 155-167 , doi : 10.1127 / ejm / 10/1/0155 .
  42. ↑ Encarnación Roda, Alfonso Pesquera, François Fontan, Paul Keller: Phosphate mineral associations in the Cañada pegmatite (Salamanca, Spain): Paragenetic relationships, chemical compositions, and implications for pegmatite evolution . In: The American Mineralogist . tape 89 , no. 1 , 2004, p. 110-125 , doi : 10.2138 / am-2004-0114 .
  43. ↑ a b Anonymus: Preface: Phosphate Theme Session Dedicated to: François Fontan, André-Mathieu Fransolet and Paul Keller . In: William B. Simmons, Karen L. Webber, Alexander U. Falster, Encarnación Roda-Robles, Sarah L. Hanson, María Florencia Márquez-Zavalía, Miguel Ángel Galliski (Eds.): Contributions to the 6th International Symposium on Granitic Pegmatites , May 26 - June 2, 2013 . PEG 2013 New Hampshire and Maine. 2013, p. ii – iii (English, uno.edu [PDF; 9.5 MB ; accessed on August 15, 2018]).
  44. ^ A b Pietro Vignola, Frédéric Hatert, Encarnación Roda-Robles, William B. Simmons, Carl A. Francis: Pegmatitic Phosphate: A Tribute to François Fontan, André-Mathieu Fransolet, and Paul Keller . In: The Canadian Mineralogist . tape 52 , no. 2 , 2014, p. 121–128 , doi : 10.3749 / canmin.52.2.121 ( researchgate.net [PDF; 1,2 MB ; accessed on August 15, 2018]).
  45. ↑ Pete J. Dunn, Joel D. Grice, Frederick J. Wicks, Robert A. Gault: Paulkellerite, a new bismuth iron phosphate mineral from Schneeberg, Germany . In: The American Mineralogist . tape 73 , 1988, pp. 870–872 ( rruff.info [PDF; 290 kB ; accessed on August 15, 2018]).
  46. ^ Paul Keller, François Fontan, André-Mathieu Fransolet: Intercrystalline cation partitioning between minerals of the triplite-zwieselite-magniotriplite and the triphylite-lithiophilite series in granitic pegmatites . In: Contributions to Mineralogy and Petrology . tape 118 , no. 3 , 1994, p. 239-248 .
  47. ^ Paul Keller, André-Mathieu Fransolet, François Fontan: Triphylite-lithiophilite and triplite-zwieselite in granitic pegmatites. Their intergrowth texture and genetic relationships . In: New Yearbook for Mineralogy, Treatises . tape 168 , 1994, pp. 127-145 .
  48. ↑ André-Mathieu Fransolet, François Fontan, Paul Keller, Diano Antenucci: La serie johnsomervilleite - fillowite dans les associations de phosphates de pegmatites granitiques de l'afrique centrale . In: The Canadian Mineralogist . tape 36 , 1998, pp. 355–366 (French, rruff.info [PDF; 1.1 MB ; accessed on August 9, 2018]).
  49. ^ Anonymous: Society News. Mineralogical Association of Canada. Thematic Issue of The Canadian Mineralogist . In: Elements . tape 10 , no. 5 , 2014, p. 389 ( elementsmagazine.org [PDF; 196 kB ; accessed on August 15, 2018]).
personal data
SURNAME Keller, Paul
BRIEF DESCRIPTION German mineralogist, crystallographer and university professor
DATE OF BIRTH July 27, 1940
PLACE OF BIRTH Sărata, Romania