| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 0.0460 | AA |
1985.08 | Personal communication, Govern. Chem. Lab., Brisbane, Australia | | | | H.A.Olszowy |
| 0.0462 | XRF |
1984.12 | Personal communication, Sheffield Univ., England | | | | R.Kanaris-Sotiriou |
| 0.0440 | XRF |
1984.12 | Personal communication, Sheffield Univ., England | | | | R.Kanaris-Sotiriou |
| 0.044 | NAA |
1988.12 | Neutron activation analysis of Japanese standard rock samples II | Bull. Natn. Sci. Mus.,Tokyo Ser. E | 11 | 9-16 | F.Wakabayashi |
| 0.0281 | INAA |
1989.12 | Personal communication, Kanazawa University | | | | A.Ishiwatari |