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| 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. |
| Amorphous | Amphibole | Baddeleyite | Cancrinite-sodalite | Clay | Cristobalite | Feldspar | Fluorite | Kaolinite | Mica |
| Mordenite | Nickeline | None | Pyroxene | Quartz | Sodalite | Spinel | Titanite | Tridymite |
| 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 |
|---|---|---|---|---|---|---|---|
| Albite (*) | Feldspar | Na(AlSi3O8) | 1.25 | 1.15 | 1 | 69171 | 8803 |
| Augite (*) | Pyroxene | (Ca,Mg,Fe)2Si2O6 | 2 | 0 | 3 | 69170,69171,69172 | 2060 |
| Baddeleyite (*) | Baddeleyite | ZrO2 | 1.25 | 1.15 | 1 | 69171 | 238 |
| Cristobalite (*) | Cristobalite | SiO2 | 1.27 | 0.77 | 1 | 69170 | 453 |
| Kaolinite (*) | Clay Kaolinite | Al2Si2O5(OH)4 | 1.27 | 0.77 | 2 | 69170,69171 | 5591 |
| Magnesio-hastingsite (*) | Amphibole | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 | 1.25 | 1.15 | 1 | 69171 | 80 |
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 2 | 0 | 2 | 69171,69172 | 14899 |
| Mordenite (*) | Mordenite | (Na2,Ca,K2)4(Al8Si40)O96·28H2O | 1.27 | 0.77 | 1 | 69170 | 405 |
| Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 1.27 | 0.77 | 1 | 69170 | 17380 |
| Nosean (*) | Sodalite Cancrinite-sodalite | Na8(Si6Al6)O24(SO4)·H2O | 1.25 | 1.15 | 1 | 69171 | 75 |
| Opal (*) | Amorphous | SiO2·nH2O | 1.27 | 0.77 | 1 | 69170 | 2994 |
| Pyrrhotite (*) | Nickeline | Fe7S8 | 1.25 | 1.15 | 1 | 69171 | 9056 |
| Quartz (*) | Quartz | SiO2 | 1.27 | 0.77 | 1 | 69170 | 61156 |
| Sanidine (*) | Feldspar | K(AlSi3O8) | 1.25 | 0.77 | 2 | 69170,69171 | 598 |
| Thorianite (*) | Fluorite | ThO2 | 1.25 | 1.15 | 1 | 69171 | 236 |
| Titanite (*) | Titanite | CaTi(SiO4)O | 1.25 | 1.15 | 1 | 69171 | 4899 |
| Tridymite (*) | Tridymite | SiO2 | 1.27 | 0.77 | 1 | 69170 | 458 |
| Uraninite (*) | Fluorite | UO2 | 1.25 | 1.15 | 1 | 69171 | 2718 |
| Zirkelite (*) | Fluorite | (Ti,Ca,Zr)O2-x | 1.25 | 1.15 | 1 | 69171 | 27 |
| Age ID | Locality Notes |
|---|---|
| Michelle_0164_a | Trachybasalt |
| Michelle_0165_b | Anc-Trachybasalt |
| Michelle_0166_c | Basalt |
| Michelle_0167_d | Scoriae |
| Michelle_0168_e | Scoriae |
| Michelle_0169 | Basalt |
| Michelle_0170 | Basalt |
| Michelle_0171 | Pumice |
| Michelle_0172 | Pumice |
| Michelle_0173 | Basalt |
| Michelle_0174 | Trachyte |
| Michelle_0175_a | Phonolite |
| Michelle_0176_b | Phonolite |
| Michelle_0177_a | Rhyolite, glassy |
| Michelle_0178_b | Rhyolite, glassy |
| Michelle_0179_c | Rhyolite, compact |
| Michelle_0180_d | Rhyolite, dyke |
| Michelle_0181 | Retinite of P44 |
| Michelle_0182 | Trachyte, from Mindat: "Feldspathoid-bearing syenite xenoliths in trachytic pyroclastic flow" |
| Michelle_0183 | Perlite |
| Michelle_0184 | Rhyolite |
| Michelle_0185 | Rhyolite |
| Michelle_0186 | Rhyolite |
| Michelle_0187_a | Na-rhyolite dome |
| Michelle_0188_b | Obsidian |
| Michelle_0189_c | Obsidian |
| Michelle_0190_d | Obsidian |
| Excel ID | Max Age (Ma) | Min Age (Ma) | Age as listed in reference | Dating Method | Age Interpret | Prioritized? | Sample Source | Sample Num | Run Num | Age from other Locality | Dated Mineral | Minerals explicitely stated as having this age | Age applies to these Elements | MinDat Locality ID | Dated Locality (Max Age) | Location as listed in reference | Reference | Reference DOI | Reference ID | Age Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Michelle_0187_a | 1.66 | 1.54 | 1.6±0.06 | K-Ar | Age of rhyolite dome | 156 | 263650 | Palmarola Island, Latina Province, Lazio, Italy | M. Tramontana | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite dome | |||||||||
| Michelle_0188_b | 1.76 | 1.64 | 1.7±0.06 | K-Ar | Age of obsidian | 156a | 263650 | Palmarola Island, Latina Province, Lazio, Italy | M. Tramontana | Fornaseri (1985) | RDSIMF40_73 | Age of obsidian | |||||||||
| Michelle_0189_c | 2 | 1.4 | 1.7±0.3 | Fission Track | Age of obsidian | PAL13 | 263650 | Palmarola Island, Latina Province, Lazio, Italy | Monte Tramontana-Porto | Fornaseri (1985) | RDSIMF40_73 | Age of obsidian | |||||||||
| Michelle_0190_d | 1.81 | 1.35 | 1.58±0.23 | Fission Track | Age of obsidian | 263650 | Palmarola Island, Latina Province, Lazio, Italy | Monte Tramontana | Fornaseri (1985) | RDSIMF40_73 | Age of obsidian | ||||||||||
| Michelle_0174 | 1.27 | 1.19 | 1.23±0.04 | K-Ar | Age of trachyte | 8/491 | 146131 | Ponza Island, Latina Province, Lazio, Italy | La Botte | Fornaseri (1985) | RDSIMF40_73 | Age of trachyte | |||||||||
| Michelle_0175_a | 1.24 | 1.16 | 1.2±0.04 | K-Ar | Age of phonolite | 63 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Santo Stefano | Fornaseri (1985) | RDSIMF40_73 | Age of phonolite | |||||||||
| Michelle_0176_b | 0.83 | 0.77 | 0.8±0.03 | K-Ar | Age of phonolite | sanidine | 7/606 | Sanidine | 146131 | Ponza Island, Latina Province, Lazio, Italy | Santo Stefano | Fornaseri (1985) | RDSIMF40_73 | Age of phonolite | |||||||
| Michelle_0177_a | 4.86 | 4.54 | 4.7±0.16 | K-Ar | Age of rhyolite | biotite | P13 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Punta Nera (base of series) | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | ||||||||
| Michelle_0178_b | 5.17 | 4.83 | 5.0±0.17 | K-Ar | Age of rhyolite | P105 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Punta Nera (base of series) | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | |||||||||
| Michelle_0179_c | 4.2 | 3.92 | 4.06±0.14 | K-Ar | Age of rhyolite | P107 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Punta Nera (base of series) | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | |||||||||
| Michelle_0180_d | 1.97 | 1.83 | 1.9±0.07 | K-Ar | Age of rhyolite | P44 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Punta Nera (base of series) | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | |||||||||
| Michelle_0181 | 1.14 | 1.06 | 1.1±0.04 | K-Ar | Age of retinite | 102 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Cala Inferno | Fornaseri (1985) | RDSIMF40_73 | Age of retinite | |||||||||
| Michelle_0183 | 4.52 | 4.2 | 4.36±0.16 | K-Ar | Age of perlite | PNZ46b | 146131 | Ponza Island, Latina Province, Lazio, Italy | Cala d. Acqua | Fornaseri (1985) | RDSIMF40_73 | Age of perlite | |||||||||
| Michelle_0184 | 4.62 | 4.24 | 4.43±0.19 | K-Ar | Age of rhyolite | PNZ20 | 146131 | Ponza Island, Latina Province, Lazio, Italy | Punta Bianca | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | |||||||||
| Michelle_0185 | 4.45 | 3.47 | 3.96±0.49 | K-Ar | Age of rhyolite | PNZ4 | 146131 | Ponza Island, Latina Province, Lazio, Italy | M. Pagliaro | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | |||||||||
| Michelle_0186 | 4.61 | 4.29 | 4.45±0.16 | K-Ar | Age of rhyolite | PNZ3 | 146131 | Ponza Island, Latina Province, Lazio, Italy | S. Maria | Fornaseri (1985) | RDSIMF40_73 | Age of rhyolite | |||||||||
| Michelle_0182 | 1.25 | 1.15 | 1.2±0.05 | K-Ar | Age of trachyte | feldspar | 102 | 54765 | Punta Della Guardia, Ponza Island, Latina Province, Lazio, Italy | M. La Guardia | Fornaseri (1985) | RDSIMF40_73 | Age of trachyte | ||||||||
| Michelle_0164_a | 1.76 | 1.64 | 1.7±0.06 | K-Ar | Age of trachybasalt | V58 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Parata Grande | Fornaseri (1985) | RDSIMF40_73 | Age of trachybasalt | |||||||||
| Michelle_0165_b | 2 | 2 | <2 | K-Ar | Age of anc-trachybasalt | V83 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Parata Grande | Fornaseri (1985) | RDSIMF40_73 | Age of anc-trachybasalt | |||||||||
| Michelle_0166_c | 0.52 | 0.44 | 0.480±0.04 | K-Ar | Age of basalt | 5/564 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Parata Grande | Fornaseri (1985) | RDSIMF40_73 | Age of basalt | |||||||||
| Michelle_0167_d | 0.19 | 0 | <0.19 | K-Ar | Age of Scoriae (biotite) | biotite | 24/598 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Parata Grande | Fornaseri (1985) | RDSIMF40_73 | Age of Scoriae (biotite) | ||||||||
| Michelle_0168_e | 0.27 | 0 | <0.27 | K-Ar | Age of Scoriae (whole rock) | 24/604 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Parata Grande | Fornaseri (1985) | RDSIMF40_73 | Age of Scoriae (whole rock) | |||||||||
| Michelle_0169 | 0.89 | 0.73 | 0.81±0.08 | K-Ar | Age of basalt | 1/155 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Capo Arco | Fornaseri (1985) | RDSIMF40_73 | Age of basalt | |||||||||
| Michelle_0170 | 0.61 | 0.45 | 0.53±0.08 | K-Ar | Age of basalt | 4/572 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Semaforo | Fornaseri (1985) | RDSIMF40_73 | Age of basalt | |||||||||
| Michelle_0171 | 0.15 | 0 | <0.15 | K-Ar | Age of pumice | biotite | 25/599 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | S. of Montagnozzo | Fornaseri (1985) | RDSIMF40_73 | Age of pumice | ||||||||
| Michelle_0172 | 0.15 | 0 | <0.15 | K-Ar | Age of pumice | biotite | 26/600 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Montagnozzo | Fornaseri (1985) | RDSIMF40_73 | Age of pumice | ||||||||
| Michelle_0173 | 0.13 | 0 | <0.13 | K-Ar | Age of basalt | 6/603 | 204766 | Ventotene Island, Latina Province, Lazio, Italy | Romanello d.B. | Fornaseri (1985) | RDSIMF40_73 | Age of basalt |
| Sample | Source Locality | Reference URL |
|---|---|---|
All locality data graciously provided by mindat.org
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