| 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. |
| Calcite | Coronadite | Erionite | None | Not in a structural group | Ramsdellite |
| Calcite (*) | Cryptomelane (*) | Erionite-K (*) | Offretite (*) | Ramsdellite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Calcite (*) | Calcite | Ca(CO3) | 3 | 145464,145465,145466 | 27770 | ||
| Cryptomelane (*) | Coronadite | K(Mn4+7Mn3+)O16 | 3 | 145464,145465,145466 | 599 | ||
| Erionite-K (*) | Erionite | K10[Si26Al10O72]·30H2O | 3 | 145464,145465,145466 | 22 | ||
| Offretite (*) | Not in a structural group | KCaMg(Si13Al5)O36·15H2O | 3 | 145464,145465,145466 | 146 | ||
| Ramsdellite (*) | Ramsdellite | MnO2 | 3 | 145464,145465,145466 | 88 |
| Sample | Source Locality | Reference URL |
|---|---|---|
All locality data graciously provided by mindat.org
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