Trace elements in precious and common opals using neutron activation analysis

  • G. D. McOrist
  • A. Smallwood


Neutron activation analysis (NAA) was used to determine the concentration of trace elements in 44 precious and 52 common opals sampled from a number of recognised fields within Australia. The purpose of this study was to determine if precious and common opals of the same colour and location have the same or a different trace element profile. Similar numbers of black, white and grey samples were studied in each case. In most cases common opals had a significantly higher concentrationof certain trace elements when compared with precious opals.


Colour Physical Chemistry Inorganic Chemistry Activation Analysis Neutron Activation 
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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • G. D. McOrist
    • 1
  • A. Smallwood
    • 2
  1. 1.ANSTO Environment DivisionLucas Heights Research LaboratoriesMenaiAustralia
  2. 2.Gemmological Association of AustraliaSydneyAustralia

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