| 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. |
| Analcime | Gmelinite | Harmotome | Natrolite | None |
| Analcime (*) | Gmelinite-K (*) | Natrolite (*) | Phillipsite-K (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Analcime (*) | Analcime | Na(AlSi2O6)·H2O | 0 | 1627 | |||
| Gmelinite-K (*) | Gmelinite | K4(Si8Al4)O24·11H2O | 0 | 5 | |||
| Natrolite (*) | Natrolite | Na2(Si3Al2)O10·2H2O | 0 | 1236 | |||
| Phillipsite-K (*) | Harmotome | K6(Si10Al6)O32·12H2O | 0 | 71 |
All locality data graciously provided by mindat.org
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