| 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 | Coronadite | Corundum | Diaspore | Kaolinite | None | Quartz | Smectite-vermiculite |
| Calcite (*) | Dickite (*) | Goethite (*) | Hematite (*) | Hollandite (*) |
| Kaolinite (*) | Montmorillonite (*) | Quartz (*) |
| 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) | 1 | 89613 | 27770 | ||
| Dickite (*) | Clay Kaolinite | Al2Si2O5(OH)4 | 1 | 89613 | 651 | ||
| Goethite (*) | Diaspore | FeO(OH) | 1 | 89613 | 7437 | ||
| Hematite (*) | Corundum | Fe2O3 | 1 | 89613 | 14640 | ||
| Hollandite (*) | Coronadite | Ba(Mn4+6Mn3+2)O16 | 1 | 89613 | 243 | ||
| Kaolinite (*) | Clay Kaolinite | Al2Si2O5(OH)4 | 1 | 89613 | 5591 | ||
| Montmorillonite (*) | Clay Smectite-vermiculite | (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O | 1 | 89613 | 1508 | ||
| Quartz (*) | Quartz | SiO2 | 1 | 89613 | 61156 |
| Sample | Source Locality | Reference URL |
|---|---|---|
| R070539 | Tangen Mn Mine, Hurdalsjøen, Nannestad, Akershus, Norway | https://rruff.info/R070539 |
All locality data graciously provided by mindat.org
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