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 | Tourmaline |
Dravite (*) | Fluor-dravite (*) | Fluor-schorl (*) | Oxy-dravite (*) | Oxy-schorl (*) |
Schorl (*) |
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 |
---|---|---|---|---|---|---|---|
Dravite (*) | Tourmaline | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) | 0 | 648 | |||
Fluor-dravite (*) | Tourmaline | NaMg3Al6(Si6O18)(BO3)3(OH)3F | 0 | 8 | |||
Fluor-schorl (*) | Tourmaline | NaFe2+3Al6(Si6O18)(BO3)3(OH)3F | 0 | 25 | |||
Oxy-dravite (*) | Tourmaline | Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O | 0 | 24 | |||
Oxy-schorl (*) | Tourmaline | Na(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3O | 0 | 9 | |||
Schorl (*) | Tourmaline | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) | 0 | 2705 |
Sample | Source Locality | Reference URL |
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All locality data graciously provided by mindat.org
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