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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. |
| Diaspore | Feldspar | None | Quartz | Rutile | Titanite | Tourmaline |
| Cassiterite (*) | Goethite (*) | Orthoclase (*) | Quartz (*) | Schorl (*) |
| Titanite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Cassiterite (*) | Rutile | SnO2 | 340 | 235 | 3 | 118324,118325,118327 | 5171 |
| Goethite (*) | Diaspore | FeO(OH) | 340 | 235 | 1 | 118327 | 7437 |
| Orthoclase (*) | Feldspar | K(AlSi3O8) | 340 | 235 | 1 | 118327 | 2349 |
| Quartz (*) | Quartz | SiO2 | 340 | 235 | 2 | 118327,118328 | 61156 |
| Schorl (*) | Tourmaline | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) | 340 | 235 | 1 | 118325 | 2705 |
| Titanite (*) | Titanite | CaTi(SiO4)O | 340 | 235 | 1 | 118326 | 4899 |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lucy_166 | 277.1 | 276.7 | 277.1 - 276.7 | Pb-U/Pb-Pb | Range of ages given with 206Pb/238U, 207Pb/235U and 207Pb/206Pb. | whole rock | CORN-217 (3,4) | Yes | 221607 | Castle-an-Dinas Quarry, Higher Trenowin, Ludgvan, Cornwall, England, UK | Castle-an-Dinas Quarry | Chen et al (1993) | 10.1144/gsjgs.150.6.1183 | JGSL150_1183 | Analytical data for igneous monazites with sample and (analysis) numbers | ||||||
| Lucy_167 | 273.2 | 272 | 272.6 ± 0.6 | 40Ar-39Ar | Intergrated age of Cornubian Batholith | muscovite | CORN-217 | Yes | Muscovite | 221607 | Castle-an-Dinas Quarry, Higher Trenowin, Ludgvan, Cornwall, England, UK | Castle-an-Dinas Quarry | Chen et al (1993) | 10.1144/gsjgs.150.6.1183 | JGSL150_1183 | Analytical data for micas | |||||
| Lucy_129 | 271 | 251 | 261 ± 10 | K/Ar | Previous K/Ar determination | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Lands End Granite | Bray and Spooner (1983) | 10.1144/GSL.SP.1964.001.01.15 | EG78_1064 | Arithmetic mean of 5 biotite samples from Lands End Granite | ||||||||
| Lucy_201 | 340 | 340 | 340 | K-Ar | Locality unknown. Previous age stated, later recalculated by Lambert and Mills. | biotite | Oxford 9437 | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Miller et al (1964) | 10.1002/gj.3350040109 | GJ4_105 | Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs) | |||||||
| Lucy_202 | 330 | 330 | 330 | K-Ar | Locality unknown. Previous age stated, recalculated from age quoted by Mayne et al. | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Miller et al (1964) | 10.1002/gj.3350040109 | GJ4_105 | Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs) | ||||||||
| Lucy_203 | 279 | 261 | 270 ± 9 | Rb-Sr | Locality unknown. Previous age stated. | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Miller et al (1964) | 10.1002/gj.3350040109 | GJ4_105 | Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs) | ||||||||
| Lucy_204 | 265 | 235 | 250 ± 15 | K-Ar | Locality unknown. Previous age stated. | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Miller et al (1964) | 10.1002/gj.3350040109 | GJ4_105 | Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs) | ||||||||
| Lucy_205 | 250 | 250 | 250 | K-Ar | Locality unknown. Previous age stated. | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Miller et al (1964) | 10.1002/gj.3350040109 | GJ4_105 | Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs) | ||||||||
| Lucy_269 | 279 | 261 | 270 ± 9 | Rb-Sr | The mean age of biotite from Land's End granite | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Darnley et al. (1965) | MM34_159 | By either method the age of the Land's End biotite is clearly incompatible with the older uraninite age (290 My.) obtained from Geevor, where all the mineralized lodes are younger than the granite. | |||||||||
| Lucy_270 | 265 | 235 | 250 ± 15 | Rb-Sr | The mean age of biotite from Land's End granite | biotite | 1017 | Land's End, Sennen, Cornwall, England, UK | Land's End Granite | Darnley et al. (1965) | MM34_159 | By either method the age of the Land's End biotite is clearly incompatible with the older uraninite age (290 My.) obtained from Geevor, where all the mineralized lodes are younger than the granite. | |||||||||
| Lucy_163 | 274.6 | 273 | 274.6 - 273 | Pb-U/Pb-Pb | Range of ages given with 206Pb/238U, 207Pb/235U and 207Pb/206Pb. | whole rock | CORN-61 (2) | Yes | 189652 | Lamorna Cove, St Buryan, Cornwall, England, UK | Lamorna Cave | Chen et al (1993) | 10.1144/gsjgs.150.6.1183 | JGSL150_1183 | Analytical data for igneous monazites with sample and (analysis) numbers | ||||||
| Lucy_164 | 270.9 | 268.9 | 269.9 ± 1 | 40Ar-39Ar | Intergrated age of Cornubian Batholith | muscovite | CORN-61 | Yes | Muscovite | 189652 | Lamorna Cove, St Buryan, Cornwall, England, UK | Lamorna Cave | Chen et al (1993) | 10.1144/gsjgs.150.6.1183 | JGSL150_1183 | Analytical data for micas | |||||
| Lucy_165 | 271.8 | 270 | 270.9 ± 0.9 | 40Ar-39Ar | Intergrated age of Cornubian Batholith | biotite | CORN-61 | Yes | 189652 | Lamorna Cove, St Buryan, Cornwall, England, UK | Lamorna Cave | Chen et al (1993) | 10.1144/gsjgs.150.6.1183 | JGSL150_1183 | Analytical data for micas |
| Sample | Source Locality | Reference URL |
|---|---|---|
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