| 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. |
| Axinite | Calcite | None | Tourmaline |
| Axinite-(Fe) (*) | Calcite (*) | Schorl (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Axinite-(Fe) (*) | Axinite | Ca4Fe2+2Al4[B2Si8O30](OH)2 | 1 | 50222 | 260 | ||
| Calcite (*) | Calcite | Ca(CO3) | 1 | 50222 | 27770 | ||
| Schorl (*) | Tourmaline | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) | 1 | 50222 | 2705 |
All locality data graciously provided by mindat.org
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