Zeitschriften und Ausgaben

Volumen 53 (2022): Heft 1 (January 2022)

Volumen 52 (2021): Heft 1 (January 2021)

Volumen 51 (2020): Heft 1 (January 2020)

Volumen 50 (2019): Heft 1-4 (December 2019)

Volumen 49 (2018): Heft 1-4 (December 2018)

Volumen 48 (2017): Heft 1-4 (December 2017)

Volumen 47 (2016): Heft 1-4 (December 2016)

Volumen 46 (2015): Heft 1-2 (June 2015)

Volumen 45 (2014): Heft 3-4 (December 2014)

Volumen 45 (2014): Heft 1-2 (June 2014)

Volumen 44 (2013): Heft 3-4 (July 2013)

Volumen 44 (2013): Heft 1-2 (June 2013)

Volumen 43 (2012): Heft 3-4 (December 2012)

Volumen 43 (2012): Heft 1-2 (March 2012)

Volumen 42 (2011): Heft 4 (October 2011)

Volumen 42 (2011): Heft 2-3 (September 2011)

Volumen 42 (2011): Heft 1 (March 2011)

Volumen 41 (2010): Heft 3-4 (December 2010)

Volumen 41 (2010): Heft 1-2 (June 2010)

Volumen 40 (2009): Heft 1-4 (December 2009)

Volumen 39 (2008): Heft 3-4 (December 2008)

Volumen 39 (2008): Heft 1-2 (June 2008)

Volumen 38 (2007): Heft 2 (December 2007)

Volumen 38 (2007): Heft 1 (June 2007)

Volumen 37 (2006): Heft 2 (December 2006)

Volumen 37 (2006): Heft 1 (June 2006)

Zeitschriftendaten
Format
Zeitschrift
eISSN
1899-8526
Erstveröffentlichung
05 Feb 2007
Erscheinungsweise
1 Hefte pro Jahr
Sprachen
Englisch

Suche

Volumen 50 (2019): Heft 1-4 (December 2019)

Zeitschriftendaten
Format
Zeitschrift
eISSN
1899-8526
Erstveröffentlichung
05 Feb 2007
Erscheinungsweise
1 Hefte pro Jahr
Sprachen
Englisch

Suche

3 Artikel
Uneingeschränkter Zugang

Synthesis and characterization of cadmium chlorapatite Cd5(PO4)3Cl

Online veröffentlicht: 03 Apr 2020
Seitenbereich: 3 - 12

Zusammenfassung

Abstract

One of the most effective methods for the immobilization of toxic metals involves the use of minerals from the apatite supergroup. The formation of cadmium chlorapatite may lead to successful entrapping of cadmium; thus, it is important to examine the solubility constant to determine the stability of cadmium in the the apatite structure. Cadmium chlorapatite was synthetized and characterized by X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy. The solubility constant (log) Ksp of cadmium chlorapatite was -65.58. The Gibbs free energy of formation of cadmium chlorapatite reached -3950.48 kJ mol−1. The solubility constant turned out to be low but was enough for cadmium chlorapatiteto be considered a very stable compound..

Schlüsselwörter

  • Apatite
  • Cadmium
  • Cadmium chloroapatite
  • Dissolution
  • Solubility constant
Uneingeschränkter Zugang

Lamprophyric rock locations in Greece

Online veröffentlicht: 03 Apr 2020
Seitenbereich: 13 - 33

Zusammenfassung

Abstract

Twenty-four areas with lamprophyric formations have been located through a bibliographic search in Macedonia, Thrace, the islands and Attica. Most lamprophyre types have been identified including rare “alkali minette”. In most localities the dikes/sills appear to be late mantle products associated with deep faulting following extensional activity in granitoids.

Schlüsselwörter

  • lamprophyric rocks
  • distribution
  • Greece
  • bibliography
Uneingeschränkter Zugang

Geochemistry, mineral chemistry and P-T evaluation of metasediments of Bahram-Gur complex, ES Sanandaj-Sirjan zone, Iran

Online veröffentlicht: 03 Apr 2020
Seitenbereich: 34 - 68

Zusammenfassung

Abstract

The Bahram-Gur area in the southeastern part of the Sanandaj – Sirjan metamorphic zone, contains metabasites and metasediments. The metasedimentary rocks are mainly garnet schists and garnet-staurolite schists that were metamorphosed under amphibolite facies conditions. The rocks consist of garnet ± staurolite, biotite, muscovite, chlorite and quartz. The geochemistry of the Bahram-Gur metasediments classifies them as quartziferous sedimentary rocks. The protoliths of the metasedimentary rocks were close to greywackes from an ensialic arc basin depositional setting, with a source comprising mostly mixture of acid and intermediate magmatic rocks in the upper continental crust. The metamorphic conditions of formation of the Bahram-Gur metasedimentary are investigated by geothermobarometric methods. The results show that the metasedimentary rocks formed at temperatures of 600-750°C and pressures of 5-7.5 kbar.

Schlüsselwörter

  • Bahram-Gur area
  • Sanandaj-Sirjan Zone
  • metamorphic conditions
  • metasediments
  • geothermobarometry
3 Artikel
Uneingeschränkter Zugang

Synthesis and characterization of cadmium chlorapatite Cd5(PO4)3Cl

Online veröffentlicht: 03 Apr 2020
Seitenbereich: 3 - 12

Zusammenfassung

Abstract

One of the most effective methods for the immobilization of toxic metals involves the use of minerals from the apatite supergroup. The formation of cadmium chlorapatite may lead to successful entrapping of cadmium; thus, it is important to examine the solubility constant to determine the stability of cadmium in the the apatite structure. Cadmium chlorapatite was synthetized and characterized by X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy. The solubility constant (log) Ksp of cadmium chlorapatite was -65.58. The Gibbs free energy of formation of cadmium chlorapatite reached -3950.48 kJ mol−1. The solubility constant turned out to be low but was enough for cadmium chlorapatiteto be considered a very stable compound..

Schlüsselwörter

  • Apatite
  • Cadmium
  • Cadmium chloroapatite
  • Dissolution
  • Solubility constant
Uneingeschränkter Zugang

Lamprophyric rock locations in Greece

Online veröffentlicht: 03 Apr 2020
Seitenbereich: 13 - 33

Zusammenfassung

Abstract

Twenty-four areas with lamprophyric formations have been located through a bibliographic search in Macedonia, Thrace, the islands and Attica. Most lamprophyre types have been identified including rare “alkali minette”. In most localities the dikes/sills appear to be late mantle products associated with deep faulting following extensional activity in granitoids.

Schlüsselwörter

  • lamprophyric rocks
  • distribution
  • Greece
  • bibliography
Uneingeschränkter Zugang

Geochemistry, mineral chemistry and P-T evaluation of metasediments of Bahram-Gur complex, ES Sanandaj-Sirjan zone, Iran

Online veröffentlicht: 03 Apr 2020
Seitenbereich: 34 - 68

Zusammenfassung

Abstract

The Bahram-Gur area in the southeastern part of the Sanandaj – Sirjan metamorphic zone, contains metabasites and metasediments. The metasedimentary rocks are mainly garnet schists and garnet-staurolite schists that were metamorphosed under amphibolite facies conditions. The rocks consist of garnet ± staurolite, biotite, muscovite, chlorite and quartz. The geochemistry of the Bahram-Gur metasediments classifies them as quartziferous sedimentary rocks. The protoliths of the metasedimentary rocks were close to greywackes from an ensialic arc basin depositional setting, with a source comprising mostly mixture of acid and intermediate magmatic rocks in the upper continental crust. The metamorphic conditions of formation of the Bahram-Gur metasedimentary are investigated by geothermobarometric methods. The results show that the metasedimentary rocks formed at temperatures of 600-750°C and pressures of 5-7.5 kbar.

Schlüsselwörter

  • Bahram-Gur area
  • Sanandaj-Sirjan Zone
  • metamorphic conditions
  • metasediments
  • geothermobarometry

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