| A | This mineral is Anthropogenic. |
| G | This mineral is directly dated. |
| B | This mineral is reported as having this age. |
| Y | This mineral is using an age reported as an element mineralization period. |
| O | This mineral is using an age calculated from all data at the locality. |
| R | The age displayed for this mineral originates from a different, non-child locality. |
| P | The age displayed for this mineral is the range of ages for this mineral at all of this locality's children. |
| This mineral's age has not yet been recorded. |
| Amphibole | Feldspar | None | Olivine | Pyroxene | Quartz | Sapphirine |
| Aegirine (*) | Aenigmatite (*) | Fayalite (*) | Quartz (*) | Riebeckite (*) |
| Sanidine (*) |
| Mineral name | Structural Groups | IMA Formula | Max Age (Ma) | Min Age (Ma) | # of Sublocalities containing mineral | LOCALITY IDs, not mindat ids | # of localities containing mineral |
|---|---|---|---|---|---|---|---|
| Aegirine (*) | Pyroxene | NaFe3+Si2O6 | 0 | 1022 | |||
| Aenigmatite (*) | Sapphirine | Na4[Fe2+10Ti2]O4[Si12O36] | 0 | 133 | |||
| Fayalite (*) | Olivine | Fe2+2(SiO4) | 0 | 371 | |||
| Quartz (*) | Quartz | SiO2 | 0 | 61156 | |||
| Riebeckite (*) | Amphibole | Na2(Fe2+3Fe3+2)Si8O22(OH)2 | 0 | 375 | |||
| Sanidine (*) | Feldspar | K(AlSi3O8) | 0 | 598 |
All locality data graciously provided by mindat.org
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