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. |
Corundum | None | Not in a structural group | Pseudobrookite | Spinel |
Corundum (*) | Laumontite (*) | Mullite (*) | Pseudobrookite (*) | Spinel (*) |
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 |
---|---|---|---|---|---|---|---|
Corundum (*) | Corundum | Al2O3 | 2 | 122198,122199 | 1797 | ||
Laumontite (*) | Not in a structural group | CaAl2Si4O12·4H2O | 1 | 122199 | 1271 | ||
Mullite (*) | None | Al4+2xSi2-2xO10-x (x ≈ 0.4) | 2 | 122199,122200 | 78 | ||
Pseudobrookite (*) | Pseudobrookite | (Fe3+2Ti)O5 | 1 | 122199 | 164 | ||
Spinel (*) | Spinel | MgAl2O4 | 1 | 122199 | 1934 |
Sample | Source Locality | Reference URL |
---|---|---|
FKM-189 | Loch Scridain, Isle Of Mull, Argyll And Bute, Scotland, UK | https://www.rockptx.com/fkm-176-to-fkm-200/#FKM-189 |
All locality data graciously provided by mindat.org
All age data...
Other copyright data...