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 | None | Quartz | Rutile | Smectite-vermiculite | Spinel |
Calcite (*) | Cryptomelane (*) | Hausmannite (*) | Maghemite (*) | Manganite (*) |
Montmorillonite (*) | Pyrolusite (*) | Quartz (*) | Todorokite (*) |
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 | 116472 | 27770 | ||
Cryptomelane (*) | Coronadite | K(Mn4+7Mn3+)O16 | 0 | 599 | |||
Hausmannite (*) | Spinel | Mn2+Mn3+2O4 | 0 | 350 | |||
Maghemite (*) | Spinel | (Fe3+0.67 0.33)Fe3+2O4 | 1 | 116472 | 229 | ||
Manganite (*) | Rutile | Mn3+O(OH) | 0 | 770 | |||
Montmorillonite (*) | Clay Smectite-vermiculite | (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O | 1 | 116472 | 1508 | ||
Pyrolusite (*) | Rutile | MnO2 | 2 | 116471,116472 | 3106 | ||
Quartz (*) | Quartz | SiO2 | 1 | 116472 | 61156 | ||
Todorokite (*) | None | (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O | 2 | 116471,116472 | 433 |
Sample | Source Locality | Reference URL |
---|---|---|
All locality data graciously provided by mindat.org
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