| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 103 | XRF |
1989.04 | Rapid non-destructive determination of fluorine in seventy-one geological and other reference samples using fast-neutron activation analysis | Geost. Newsletter | 13 | 69-73 | K.Randle and I.W.Croudace |
| <10 | ISE |
1986.04 | Personal communication, Govern. Chem. Lab., Brisbane, Australia | | | | H.A.Olszowy |
| 53 | NM |
1987.01 | Personal communication, Universite de Liege, Liege, Belgium | | | | I.Roelandts and G.Bologne |
| <100 | OES |
1987.02 | Personal communication, Vernadsky Inst. Geoch. Anal. Chem.,USSR | | | | B.F.Myasoedov |