Fire assaying comprises the following steps: crucible fusion, cupellation, parting (followed by flame atomic absorption spectrometry), retreatment, correction for blank contamination. The method is applicable for copper sulfide concentrates containing 15 % (m/m) to 60 % (m/m) copper, mainly in the form of chalcopyrite and related sulfide minerals, and gold contents from 0,5 g/t to 300 g/t and silver contents from 25 g/t to 1500 g/t.

General information

  • Status :  Withdrawn
    Publication date : 1994-06
  • Edition : 1
  • :
    ISO/TC 183
    Copper, lead, zinc and nickel ores and concentrates
  • 73.060.99
    Other metalliferous minerals

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