Encyclopedia of Geochemistry

1999 Edition
| Editors: Clare P. Marshall, Rhodes W. Fairbridge

G

  • Scott M. McLennan
  • Erich Schroll
  • Andrew T. Revill
  • I. P. Wright
  • Kathleen S. Smith
  • Arthur W. Rose
  • K. Govindaraju
  • Joaquin Ruiz
  • Peter A. Rock
  • William H. Casey
  • William S. Fyfe
  • Elizabeth A. Burton
  • Scott M. McLennan
  • Richard W. Murray
  • Carla W. Montgomery
  • R. Michael Easton
  • Steven W. Lonker
  • Maurice Pagel
  • Pierre Barbey
  • Richard F. Wendlandt
  • Jenny G. Webster
Reference work entry
DOI: https://doi.org/10.1007/1-4020-4496-8_7
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Gadolinium

Gadolinium (Gd) is a silvery-white metal with an atomic number (Z) of 64, electronic configuration of [Xe]4f75d16s2, atomic weight of 157.25 and melting point of 1586 K. It is a Group IIIB inner transition element and one of the lanthanide and rare earth elements. Gadolinium has seven natural isotopes, 152Gd (0.20%), 154Gd (2.15%), 155Gd (14.73%), 156Gd (20.47%), 157Gd (15.68%), 158Gd (24.87%) and 160Gd (21.90%). The isotope 152Gd is radioactive with a half life (T1/2) of 1.1 × 1014 years. Discovered in 1880, Gd is named after the mineral gadolinite, which in turn is named after the Finnish chemist J. Gadolin.

Gadolinium is typically a trace element in most rocks and minerals. It is refractory and under most conditions is lithophile and found in the trivalent state. The major importance of Gd in geochemistry is that it is one of the middle trivalent rare earth elements (or lanthanides), among the most useful trace elements in all areas of geochemistry and cosmochemistry due...

Keywords

Fluid Inclusion Continental Crust Mineral Assemblage Vitrinite Reflectance Geothermal System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • Scott M. McLennan
  • Erich Schroll
  • Andrew T. Revill
  • I. P. Wright
  • Kathleen S. Smith
  • Arthur W. Rose
  • K. Govindaraju
  • Joaquin Ruiz
  • Peter A. Rock
  • William H. Casey
  • William S. Fyfe
  • Elizabeth A. Burton
  • Scott M. McLennan
  • Richard W. Murray
  • Carla W. Montgomery
  • R. Michael Easton
  • Steven W. Lonker
  • Maurice Pagel
  • Pierre Barbey
  • Richard F. Wendlandt
  • Jenny G. Webster

There are no affiliations available