| 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 | Clay | Kaolinite | Mica | None | Quartz | Smectite-vermiculite |
| Gibbsite (*) | Kaolinite (*) | Montmorillonite (*) | Muscovite (*) | Quartz (*) |
| Siderite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Gibbsite (*) | None | Al(OH)3 | 1 | 224176 | 504 | ||
| Kaolinite (*) | Clay Kaolinite | Al2Si2O5(OH)4 | 2 | 224170,224176 | 5591 | ||
| Montmorillonite (*) | Clay Smectite-vermiculite | (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O | 1 | 224170 | 1508 | ||
| Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 1 | 224170 | 17380 | ||
| Quartz (*) | Quartz | SiO2 | 1 | 224170 | 61156 | ||
| Siderite (*) | Calcite | Fe(CO3) | 0 | 6417 |
| Sample | Source Locality | Reference URL |
|---|---|---|
All locality data graciously provided by mindat.org
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