Primary standard
NOTES: Homogeneous, but stay away from cracks.
 |  |
| Position | 76 |
| Mineral | Basalt glass |
| Sample Name | BIR-1G |
| Type | Glass |
| Nominal formula | Silicate glass |
| Supplier | USGS |
| Source | Hawaii, Kileuea |
| Original reported analysis | USGS reference material |
| Composition quality | Primary standard |
| Comments | Same composition as USGS certificate, with all Fe as FeO. |
| O Na Mg Al Si P K Ca Ti V Cr Mn Fe Ni Cr Sr | 43.87 1.35 5.85 8.2 22.42 0.01 0.02 9.51 0.58 0.03 0.04 0.14 7.92 0.02 0.01 0.01 |
