| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 4 | ISE |
1986.1 | Personal communication, Govern. Chem. Lab., Brisbane, Australia | | | | H.A.Olszowy, R.Sumner, R.Francis, J.Hegarty and S. |
| <25 | 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 |
| 28 | INAA |
1993.1 | Fluorine abundances of twenty nine geological and other reference samples using fast-neutron activation analysis | Geost. Newsletter | 17 | 217-218 | I.W.Croudace and |