| JLs-1 | Limestone | Page 3 of 3 |
| _________________________________________________________________________________ |
| Constituent | Concentration | Uncertainty | Units | N | Data Quality | Data Source |
| _________________________________________________________________________________ |
| Th | 0.0287 | 0.009 | ug/g | 9 | Recommended value | 96IMA - 01 |
| Tl | 0.003 | ug/g | 2 | Provisional value | 96IMA - 01 |
| U | 1.75 | 0.29 | ug/g | 13 | Recommended value | 96IMA - 01 |
| V | 3.59 | 0.99 | ug/g | 5 | Recommended value | 96IMA - 01 |
| W | 0.21 | ug/g | 1 | Not provided by compiler | 96IMA - 01 |
| Y | 0.223 | 0.047 | ug/g | 5 | Recommended value | 96IMA - 01 |
| Yb | 0.0164 | 0.003 | ug/g | 5 | Recommended value | 96IMA - 01 |
| Zn | 3.19 | 0.69 | ug/g | 12 | Recommended value | 96IMA - 01 |
| Zr | 4.19 | 2.98 | ug/g | 4 | Provisional value | 96IMA - 01 |
| _________________________________________________________________________________ |
| Material Production Reference: |
| S. Itoh, S. Terashima, N. Imai, H. Kamioka, N. Mita and A. Ando (1993), 1992 Compilation of Analytical Data for Rare-earth |
| Elements, Scandium, Yttrium, Zirconium and Hafnium in Twenty-six GSJ Reference Samples, Geostandards Newsletter, 17: 5-79. |
| Data Source Reference: |
| N. Imai, S. Terashma, S. Itoh and A. Ando (1996), 1996 Compilation of Analytical Data on Nine GSJ Geochemical Reference |
| Samples, "Sedimentary Rock Series", Geostandards Newsletter, 20: 165-216. |