| 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. |
| None | Tridymite | Zircon |
| Nepheline (*) | Zircon (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Nepheline (*) | Tridymite | Na3K(Al4Si4O16) | 1 | 79945 | 884 | ||
| Zircon (*) | Zircon | Zr(SiO4) | 1 | 79943 | 5251 |
| Sample | Source Locality | Reference URL |
|---|---|---|
| X050181 | Blantyre, Southern Region, Malawi | https://rruff.info/X050181 |
All locality data graciously provided by mindat.org
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