| GXR-1 | Jasperoid | Page 3 of 3 |
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| Constituent | Concentration | Uncertainty | Units | N | Data Quality | Data Source |
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| Pd | < | 0.0001 | ug/g | 2 | Provisional value | 90GLA - 02 |
| Pt | < | 0.01 | ug/g | 2 | Provisional value | 90GLA - 02 |
| Rb | 14 | 9 | ug/g | 10 | Provisional value | 90GLA - 02 |
| S | 2570 | 180 | ug/g | 7 | Recommended value | 90GLA - 02 |
| Sb | 122 | 18 | ug/g | 38 | Recommended value | 90GLA - 02 |
| Sc | 1.58 | 0.2 | ug/g | 8 | Recommended value | 90GLA - 02 |
| Se | 16.6 | 2.3 | ug/g | 21 | Recommended value | 90GLA - 02 |
| Si | 22.68 | 0.71 | % | 19 | Recommended value | 90GLA - 02 |
| Sm | 2.7 | 0.3 | ug/g | 6 | Recommended value | 90GLA - 02 |
| Sn | 54 | 9 | ug/g | 23 | Recommended value | 90GLA - 02 |
| Sr | 275 | 11 | ug/g | 19 | Certified value equivalent | 90GLA - 02 |
| Ta | 0.175 | 0.075 | ug/g | 6 | Provisional value | 90GLA - 02 |
| Tb | 0.83 | 0.07 | ug/g | 4 | Provisional value | 90GLA - 02 |
| Te | 13 | 4 | ug/g | 6 | Provisional value | 90GLA - 02 |
| Th | 2.44 | 0.19 | ug/g | 8 | Recommended value | 90GLA - 02 |
| Ti | 380 | 190 | ug/g | 20 | Provisional value | 90GLA - 02 |
| Tl | 0.39 | 0.2 | ug/g | 5 | Provisional value | 90GLA - 02 |
| Tm | 0.43 | ug/g | 1 | Provisional value | 90GLA - 02 |
| U | 34.9 | 1.2 | ug/g | 25 | Certified value equivalent | 90GLA - 02 |
| V | 80 | 10 | ug/g | 25 | Recommended value | 90GLA - 02 |
| W | 164 | 65 | ug/g | 26 | Provisional value | 90GLA - 02 |
| Y | 32 | 11 | ug/g | 10 | Provisional value | 90GLA - 02 |
| Yb | 1.9 | 0.3 | ug/g | 5 | Provisional value | 90GLA - 02 |
| Zn | 760 | 100 | ug/g | 121 | Recommended value | 90GLA - 02 |
| Zr | 38 | 16 | ug/g | 15 | Provisional value | 90GLA - 02 |
| Radioactivity |
| U-238/235 | 128.2 | ratio | 1 | Provisional value | 90GLA - 02 |
| Other Constituents |
| Loss On | 5.3 | 0.7 | % | 4 | Provisional value | 90GLA - 02 |
| Ignition |
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| Material Production Reference: |
| G. H. Allcott and H. W. Lakin (1975), The Homogeneity of Six Geochemical Exploration Reference Samples, Geochemical |
| Exploration 1974, Elsevier, pp. 659-681. |
| Data Source Reference: |
| E. S. Gladney and I. Roelandts (1990), 1988 Compilation of Elemental Concentration Data for USGS Geochemical Exploration |
| Reference Materials GXR-1 to GXR-6, Geostandards Newsletter, 14: 21-118. |