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 Acanthite (*) Acanthite Ag2 S 245 178 3 119356 ,119359 ,119360 2793 Adamite (*) Andalusite Zn2 (AsO4 )(OH) 249 229 4 119333 ,119335 ,119336 ,119344 254 Agardite-(La) (*) Mixite LaCu2+ 6 (AsO4 )3 (OH)6 ·3H2 O 245 235 1 119333 33 Albite (*) Feldspar Na(AlSi3 O8 ) 189 178 1 119349 8803 Allophane (*) Allophane Al2 O3 (SiO2 )1.3-2.0 ·2.5-3.0H2 O 239 236 1 119336 470 Anglesite (*) Baryte Pb(SO4 ) 272 178 14 119323 ,119332 ,119334 ,119336 ,119338 ,119340 ,119343 ,119347 ,119352 ,119356 ,119358 ,119359 ,119360 ,119361 2734 Ankerite (*) None Ca(Fe2+ ,Mg)(CO3 )2 272 235 5 119336 ,119343 ,119347 ,119354 ,119359 3092 Annabergite (*) Vivianite Ni3 (AsO4 )2 ·8H2 O 272 241 1 119343 445 Antimony (*) Arsenic Sb 245 235 2 119330 ,119336 363 Antlerite (*) Not in a structural group Cu2+ 3 (SO4 )(OH)4 245 235 1 119347 246 Aragonite (*) Aragonite Ca(CO3 ) 249 178 4 119348 ,119349 ,119357 ,119360 3250 Arsendescloizite (*) Adelite PbZn(AsO4 )(OH) 272 241 1 119343 20 Arseniosiderite (*) Arseniosiderite Ca2 Fe3+ 3 O2 (AsO4 )3 ·3H2 O 272 229 2 119343 ,119348 194 Arsenopyrite (*) Arsenopyrite FeAsS 272 229 10 119330 ,119332 ,119333 ,119336 ,119339 ,119340 ,119343 ,119345 ,119347 ,119348 9052 Arsentsumebite (*) Brackebuschite Pb2 Cu(AsO4 )(SO4 )(OH) 189 178 1 119360 37 Asbolane (*) Not in a structural group Mn4+ (O,OH)2 ·(Co,Ni,Mg,Ca)x (OH)2x ·nH2 O 272 241 1 119343 143 Atacamite (*) Atacamite Cu2 Cl(OH)3 189 178 1 119349 544 Aurichalcite (*) None (Zn,Cu)5 (CO3 )2 (OH)6 249 178 7 119333 ,119338 ,119348 ,119356 ,119359 ,119360 ,119361 919 Azurite (*) Not in a structural group Cu3 (CO3 )2 (OH)2 272 178 6 119336 ,119343 ,119347 ,119348 ,119360 ,119363 5509 Bariopharmacosiderite (*) Pharmacosiderite Ba0.5 Fe3+ 4 (AsO4 )3 (OH)4 ·5H2 O 272 229 5 119329 ,119339 ,119343 ,119348 ,119356 150 Baryte (*) Baryte Ba(SO4 ) 272 178 23 119329 ,119332 ,119333 ,119334 ,119336 ,119338 ,119339 ,119340 ,119341 ,119342 ,119343 ,119344 ,119345 ,119347 ,119348 ,119352 ,119355 ,119356 ,119357 ,119359 ,119360 ,119361 ,119365 11547 Bayldonite (*) None Cu3 PbO(AsO3 OH)2 (OH)2 272 229 4 119341 ,119343 ,119346 ,119348 172 Beaverite-(Cu) (*) Alunite Pb(Fe3+ 2 Cu)(SO4 )2 (OH)6 272 235 2 119343 ,119363 132 Bechererite (*) None Zn7 Cu(OH)13 [SiO(OH)3 (SO4 )] 245 235 2 119336 ,119361 16 Beraunite (*) Beraunite Fe3+ 6 (PO4 )4 O(OH)4 ·6H2 O 245 235 1 119329 136 Berthierite (*) Berthierite FeSb2 S4 245 235 1 119330 343 Beudantite (*) Alunite PbFe3+ 3 (AsO4 )(SO4 )(OH)6 272 229 9 119329 ,119332 ,119333 ,119341 ,119343 ,119348 ,119356 ,119361 ,119363 413 Bindheimite (*) Pyrochlore Pb2 Sb5+ 2 O7 272 178 11 119323 ,119330 ,119336 ,119340 ,119343 ,119352 ,119356 ,119358 ,119359 ,119360 ,119361 450 Bornite (*) None Cu5 FeS4 245 235 3 119336 ,119349 ,119356 5516 Boulangerite (*) None Pb5 Sb4 S11 245 235 1 119342 843 Bournonite (*) Bournonite CuPbSbS3 245 235 2 119336 ,119342 1089 Brianyoungite (*) None Zn3 (CO3 )(OH)4 272 236 2 119336 ,119343 79 Brochantite (*) Brochantite Cu4 (SO4 )(OH)6 249 178 11 119336 ,119341 ,119347 ,119348 ,119352 ,119355 ,119356 ,119359 ,119360 ,119361 ,119363 1633 Calcite (*) Calcite Ca(CO3 ) 272 178 16 119332 ,119333 ,119336 ,119338 ,119340 ,119343 ,119348 ,119349 ,119352 ,119353 ,119355 ,119356 ,119357 ,119359 ,119360 ,119361 27770 Caledonite (*) Caledonite Cu2 Pb5 (SO4 )3 (CO3 )(OH)6 272 178 9 119334 ,119343 ,119352 ,119356 ,119359 ,119360 ,119361 ,119363 ,119365 359 Carminite (*) Carminite PbFe3+ 2 (AsO4 )2 (OH)2 272 235 7 119329 ,119332 ,119333 ,119342 ,119343 ,119356 ,119363 178 Cerussite (*) Aragonite Pb(CO3 ) 272 178 18 119326 ,119334 ,119336 ,119338 ,119340 ,119343 ,119348 ,119349 ,119352 ,119355 ,119356 ,119358 ,119359 ,119360 ,119361 ,119362 ,119363 ,119365 4979 Cesàrolite (*) None PbMn4+ 3 O6 (OH)2 245 178 3 119334 ,119356 ,119360 27 Chalcocite (*) None Cu2 S 245 178 3 119336 ,119358 ,119360 5707 Chalcopyrite (*) Chalcopyrite CuFeS2 272 178 16 119326 ,119334 ,119336 ,119340 ,119341 ,119343 ,119347 ,119348 ,119349 ,119352 ,119355 ,119356 ,119357 ,119359 ,119360 ,119361 27198 Chenite (*) Chenite CuPb4 (SO4 )2 (OH)6 245 235 4 119334 ,119336 ,119356 ,119359 40 Chrysocolla (*) Allophane (Cu2-x Alx )H2-x Si2 O5 (OH)4 ·nH2 O 272 178 14 119323 ,119326 ,119336 ,119340 ,119343 ,119347 ,119348 ,119352 ,119354 ,119355 ,119356 ,119360 ,119361 ,119363 3531 Cinnabar (*) None HgS 272 178 8 119336 ,119338 ,119343 ,119348 ,119356 ,119359 ,119360 ,119361 2600 Claudetite (*) None As2 O3 245 235 1 119330 35 Clinochlore (*) Chlorite Clay Mg5 Al(AlSi3 O10 )(OH)8 272 241 1 119343 1756 Conichalcite (*) Adelite CaCu(AsO4 )(OH) 239 236 1 119336 363 Connellite (*) Connellite Cu36 (SO4 )(OH)62 Cl8 ·6H2 O 272 235 4 119336 ,119343 ,119356 ,119361 295 Copper (*) Copper Cu 245 235 3 119336 ,119356 ,119361 3846 Corkite (*) Alunite PbFe3+ 3 (SO4 )(PO4 )(OH)6 245 235 3 119356 ,119357 ,119358 151 Cornwallite (*) None Cu5 (AsO4 )2 (OH)4 272 229 4 119341 ,119343 ,119347 ,119348 175 Coronadite (*) Coronadite Pb(Mn4+ 6 Mn3+ 2 )O16 245 178 4 119338 ,119355 ,119356 ,119360 227 Covellite (*) Covellite CuS 249 178 10 119332 ,119333 ,119336 ,119348 ,119352 ,119356 ,119359 ,119360 ,119361 ,119363 4165 Cryptomelane (*) Coronadite K(Mn4+ 7 Mn3+ )O16 245 235 3 119329 ,119356 ,119357 599 Cuprite (*) Not in a structural group Cu2 O 272 178 10 119326 ,119333 ,119343 ,119348 ,119352 ,119356 ,119358 ,119359 ,119360 ,119361 2970 Descloizite (*) Descloizite PbZn(VO4 )(OH) 245 235 1 119347 378 Devilline (*) Devilline CaCu4 (SO4 )2 (OH)6 ·3H2 O 272 236 2 119336 ,119343 366 Digenite (*) Digenite Cu1.8 S 272 235 2 119343 ,119359 1027 Djurleite (*) None Cu31 S16 245 235 2 119336 ,119359 300 Dolomite (*) None CaMg(CO3 )2 272 178 10 119336 ,119343 ,119347 ,119348 ,119353 ,119355 ,119356 ,119357 ,119359 ,119360 9895 Dufrénite (*) Dufrénite Ca0.5 Fe2+ Fe3+ 5 (PO4 )4 (OH)6 ·2H2 O 245 235 1 119329 139 Duftite (*) Adelite PbCu(AsO4 )(OH) 272 235 3 119341 ,119343 ,119347 220 Elyite (*) None CuPb4 (SO4 )O2 (OH)4 ·H2 O 245 235 2 119336 ,119359 85 Erythrite (*) Vivianite Co3 (AsO4 )2 ·8H2 O 272 178 3 119336 ,119343 ,119360 814 Fraipontite (*) Clay Serpentine (Zn,Al)3 (Si,Al)2 O5 (OH)4 245 235 1 119361 49 Fülöppite (*) None Pb3 Sb8 S15 245 235 1 119330 55 Galena (*) Rocksalt PbS 272 178 22 119326 ,119333 ,119334 ,119336 ,119338 ,119339 ,119340 ,119343 ,119344 ,119347 ,119348 ,119349 ,119352 ,119354 ,119355 ,119356 ,119358 ,119359 ,119360 ,119361 ,119362 ,119363 24243 Goethite (*) Diaspore FeO(OH) 272 178 15 119327 ,119329 ,119336 ,119338 ,119340 ,119343 ,119348 ,119355 ,119356 ,119357 ,119358 ,119359 ,119360 ,119361 ,119363 7437 Gypsum (*) Gypsum Ca(SO4 )·2H2 O 189 178 1 119360 6890 Hematite (*) Corundum Fe2 O3 272 229 4 119329 ,119343 ,119348 ,119356 14640 Hemimorphite (*) Not in a structural group Zn4 (Si2 O7 )(OH)2 ·H2 O 272 178 10 119336 ,119343 ,119347 ,119348 ,119349 ,119352 ,119356 ,119359 ,119360 ,119361 1689 Hinsdalite (*) Alunite PbAl3 (SO4 )(PO4 )(OH)6 245 235 1 119357 82 Hydrocerussite (*) None Pb3 (CO3 )2 (OH)2 245 178 6 119323 ,119356 ,119359 ,119360 ,119361 ,119365 201 Hydrozincite (*) None Zn5 (CO3 )2 (OH)6 272 178 6 119336 ,119343 ,119356 ,119359 ,119360 ,119361 1066 Ianbruceite (*) Not in a structural group Zn2 (AsO4 )(OH)(H2 O)·2H2 O 249 229 2 119336 ,119344 6 Jamesonite (*) None Pb4 FeSb6 S14 245 235 2 119330 ,119342 784 Jarosite (*) Alunite KFe3+ 3 (SO4 )2 (OH)6 272 229 7 119323 ,119336 ,119343 ,119348 ,119355 ,119356 ,119361 2228 Kaolinite (*) Clay Kaolinite Al2 Si2 O5 (OH)4 245 235 1 119327 5591 Kintoreite (*) Alunite PbFe3+ 3 (PO4 )(PO3 OH)(OH)6 245 235 3 119328 ,119329 ,119356 41 Köttigite (*) Vivianite Zn3 (AsO4 )2 ·8H2 O 272 241 1 119343 60 Lanarkite (*) None Pb2 O(SO4 ) 245 178 5 119336 ,119356 ,119359 ,119360 ,119361 97 Langite (*) None Cu4 (SO4 )(OH)6 ·2H2 O 272 178 8 119336 ,119343 ,119348 ,119352 ,119358 ,119359 ,119360 ,119361 593 Lavendulan (*) None NaCaCu5 (AsO4 )4 Cl·5H2 O 272 241 1 119343 149 Leadhillite (*) None Pb4 (SO4 )(CO3 )2 (OH)2 245 178 8 119323 ,119336 ,119352 ,119354 ,119356 ,119359 ,119360 ,119361 265 Lepidocrocite (*) Lepidocrocite Fe3+ O(OH) 272 178 5 119329 ,119343 ,119356 ,119357 ,119360 581 Linarite (*) Linarite CuPb(SO4 )(OH)2 272 178 15 119323 ,119326 ,119334 ,119340 ,119343 ,119348 ,119352 ,119354 ,119358 ,119359 ,119360 ,119361 ,119363 ,119364 ,119365 987 Macphersonite (*) None Pb4 (SO4 )(CO3 )2 (OH)2 245 235 1 119359 11 Malachite (*) Malachite Cu2 (CO3 )(OH)2 272 178 20 119326 ,119336 ,119338 ,119340 ,119341 ,119343 ,119347 ,119348 ,119349 ,119352 ,119355 ,119356 ,119357 ,119358 ,119359 ,119360 ,119361 ,119363 ,119364 ,119365 12537 Manganite (*) Rutile Mn3+ O(OH) 245 235 3 119329 ,119341 ,119356 770 Marcasite (*) Marcasite FeS2 272 235 2 119343 ,119347 5674 Mattheddleite (*) Apatite Pb5 (SiO4 )1.5 (SO4 )1.5 Cl 245 235 5 119334 ,119352 ,119354 ,119356 ,119359 32 Mawbyite (*) Natrochalcite PbFe3+ 2 (AsO4 )2 (OH)2 272 241 1 119343 19 Mercury (*) None Hg 245 235 1 119330 397 Mimetite (*) Apatite Pb5 (AsO4 )3 Cl 272 178 19 119324 ,119329 ,119332 ,119333 ,119336 ,119337 ,119338 ,119340 ,119341 ,119343 ,119347 ,119348 ,119349 ,119350 ,119352 ,119356 ,119358 ,119360 ,119361 1107 Molybdenite (*) Molybdenite MoS2 245 235 1 119358 5800 Mottramite (*) Descloizite PbCu(VO4 )(OH) 272 178 8 119340 ,119341 ,119343 ,119352 ,119356 ,119357 ,119359 ,119360 362 Muscovite (*) Mica Clay KAl2 (Si3 Al)O10 (OH)2 272 178 6 119336 ,119343 ,119347 ,119348 ,119349 ,119360 17380 Olivenite (*) Andalusite Cu2 (AsO4 )(OH) 272 241 1 119343 492 Orthoclase (*) Feldspar K(AlSi3 O8 ) 245 235 1 119329 2349 Palygorskite (*) Palygorskite Clay (Mg,Al)2 Si4 O10 (OH)·4H2 O 245 235 2 119345 ,119347 306 Gersdorffite-Pa3 (*) Pyrite NiAsS 272 241 1 119343 767 Parasymplesite (*) Vivianite Fe2+ 3 (AsO4 )2 ·8H2 O 245 235 1 119330 124 Parnauite (*) None Cu9 (AsO4 )2 (SO4 )(OH)10 ·7H2 O 272 241 1 119343 105 Pharmacosiderite (*) Pharmacosiderite KFe3+ 4 (AsO4 )3 (OH)4 ·6-7H2 O 272 235 7 119329 ,119332 ,119333 ,119338 ,119339 ,119342 ,119343 428 Phaunouxite (*) None Ca3 (AsO4 )2 ·11H2 O 245 235 1 119342 14 Philipsburgite (*) Philipsburgite Cu5 Zn(AsO4 )(PO4 )(OH)6 ·H2 O 272 229 6 119332 ,119336 ,119341 ,119343 ,119347 ,119348 31 Phosphohedyphane (*) Apatite Ca2 Pb3 (PO4 )3 Cl 245 235 1 119356 71 Plumbogummite (*) Alunite PbAl3 (PO4 )(PO3 OH)(OH)6 245 178 8 119323 ,119329 ,119338 ,119342 ,119356 ,119357 ,119360 ,119364 170 Plumbojarosite (*) Alunite Pb0.5 Fe3+ 3 (SO4 )2 (OH)6 272 235 3 119343 ,119356 ,119357 477 Posnjakite (*) None Cu4 (SO4 )(OH)6 ·H2 O 272 235 4 119336 ,119343 ,119347 ,119361 309 Pseudomalachite (*) None Cu5 (PO4 )2 (OH)4 249 229 5 119334 ,119336 ,119341 ,119347 ,119348 369 Pyrite (*) Pyrite FeS2 272 178 10 119333 ,119336 ,119343 ,119348 ,119352 ,119355 ,119356 ,119357 ,119360 ,119361 39462 Pyrolusite (*) Rutile MnO2 245 235 4 119329 ,119336 ,119338 ,119347 3106 Pyromorphite (*) Apatite Pb5 (PO4 )3 Cl 272 178 22 119323 ,119324 ,119326 ,119334 ,119336 ,119337 ,119338 ,119340 ,119343 ,119349 ,119350 ,119352 ,119353 ,119356 ,119357 ,119358 ,119359 ,119360 ,119361 ,119363 ,119364 ,119365 1725 Pyrrhotite (*) Nickeline Fe7 S8 272 241 1 119343 9056 Quartz (*) Quartz SiO2 272 178 30 119323 ,119326 ,119329 ,119330 ,119332 ,119333 ,119334 ,119336 ,119337 ,119338 ,119339 ,119340 ,119341 ,119342 ,119343 ,119344 ,119348 ,119349 ,119350 ,119352 ,119354 ,119355 ,119356 ,119357 ,119358 ,119359 ,119360 ,119361 ,119363 ,119365 61156 Queitite (*) None Zn2 Pb4 (Si2 O7 )(SiO4 )(SO4 ) 245 235 1 119359 7 Ramsbeckite (*) None Cu15 (SO4 )4 (OH)22 ·6H2 O 272 178 4 119336 ,119343 ,119360 ,119361 68 Redgillite (*) None Cu6 (SO4 )(OH)10 ·H2 O 272 235 5 119336 ,119343 ,119356 ,119359 ,119361 45 Rhodochrosite (*) Calcite Mn(CO3 ) 245 235 1 119329 1711 Rhodonite (*) Rhodonite CaMn3 Mn(Si5 O15 ) 272 178 0 969 Romanèchite (*) None (Ba,H2 O)2 (Mn4+ ,Mn3+ )5 O10 272 235 7 119329 ,119336 ,119338 ,119343 ,119352 ,119356 ,119359 312 Rosasite (*) Malachite CuZn(CO3 )(OH)2 245 178 2 119356 ,119360 454 Scheelite (*) Scheelite Ca(WO4 ) 245 235 2 119329 ,119330 4894 Schorl (*) Tourmaline NaFe2+ 3 Al6 (Si6 O18 )(BO3 )3 (OH)3 (OH) 245 235 1 119329 2705 Schulenbergite (*) Ktenasite (Cu,Zn)7 (SO4 )2 (OH)10 ·3H2 O 272 178 5 119336 ,119343 ,119348 ,119360 ,119361 142 Schultenite (*) None Pb(AsO3 OH) 245 235 2 119332 ,119333 30 Scorodite (*) None Fe3+ (AsO4 )·2H2 O 272 229 8 119325 ,119329 ,119332 ,119333 ,119342 ,119343 ,119348 ,119356 1153 Scotlandite (*) None Pb(S4+ O3 ) 245 178 6 119334 ,119352 ,119354 ,119356 ,119359 ,119360 25 Segnitite (*) Alunite PbFe3+ 3 (AsO4 )(AsO3 OH)(OH)6 272 235 2 119343 ,119356 134 Semseyite (*) None Pb9 Sb8 S21 245 235 1 119330 165 Senarmontite (*) Arsenolite Sb2 O3 245 235 1 119330 179 Serpierite (*) Devilline Ca(Cu,Zn)4 (SO4 )2 (OH)6 ·3H2 O 272 178 3 119343 ,119359 ,119360 292 Siderite (*) Calcite Fe(CO3 ) 245 235 1 119325 6417 Silver (*) Copper Ag 245 178 7 119334 ,119336 ,119349 ,119352 ,119356 ,119359 ,119360 5186 Smithsonite (*) Calcite Zn(CO3 ) 272 178 4 119336 ,119343 ,119360 ,119361 2473 Sphalerite (*) Sphalerite ZnS 272 178 15 119330 ,119336 ,119338 ,119339 ,119343 ,119347 ,119348 ,119349 ,119352 ,119355 ,119356 ,119359 ,119360 ,119361 ,119364 21482 Stibiconite (*) Pyrochlore Sb3+ Sb5+ 2 O6 (OH) 245 235 1 119330 446 Stibnite (*) Stibnite Sb2 S3 245 235 1 119330 3418 Strashimirite (*) None Cu4 (AsO4 )2 (OH)2 ·2.5H2 O 272 241 1 119343 90 Strengite (*) None Fe3+ (PO4 )·2H2 O 245 235 1 119329 263 Sulphur (*) Sulphur S 272 178 9 119330 ,119343 ,119348 ,119352 ,119355 ,119356 ,119359 ,119360 ,119361 2045 Susannite (*) None Pb4 (SO4 )(CO3 )2 (OH)2 245 235 4 119334 ,119356 ,119359 ,119361 99 Switzerite (*) None Mn2+ 3 (PO4 )2 ·7H2 O 245 235 1 119329 21 Symplesite (*) Symplesite Fe2+ 3 (AsO4 )2 ·8H2 O 245 235 1 119342 92 Tennantite-(Fe) (*) Tetrahedrite Cu6 (Cu4 Fe2 )As4 S13 245 235 1 119347 1803 Tenorite (*) None CuO 245 235 2 119347 ,119356 1101 Tetrahedrite-(Zn) (*) Tetrahedrite Cu6 (Cu4 Zn2 )Sb4 S13 272 178 5 119336 ,119342 ,119343 ,119349 ,119360 5317 Tsumebite (*) Brackebuschite Pb2 Cu(PO4 )(SO4 )(OH) 189 178 1 119360 32 Turquoise (*) Turquoise CuAl6 (PO4 )4 (OH)8 ·4H2 O 239 236 1 119336 484 Vanadinite (*) Apatite Pb5 (VO4 )3 Cl 245 235 1 119359 605 Witherite (*) Aragonite Ba(CO3 ) 245 235 1 119347 251 Wooldridgeite (*) None Na2 CaCu2+ 2 (P2 O7 )2 ·10H2 O 189 178 1 119360 3 Wroewolfeite (*) None Cu4 (SO4 )(OH)6 ·2H2 O 272 235 4 119336 ,119343 ,119359 ,119361 95 Wulfenite (*) Scheelite PbMoO4 245 178 7 119336 ,119356 ,119357 ,119358 ,119360 ,119361 ,119364 1655 Yarrowite (*) None Cu9 S8 272 241 1 119343 70 Zálesíite (*) Mixite CaCu6 (AsO4 )2 (AsO3 OH)(OH)6 ·3H2 O 272 236 2 119336 ,119343 84 Zinkenite (*) Zinkenite Pb9 Sb22 S42 245 235 1 119330 228
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 Edit JGS171_49_001 245 235 245-235 paleomag age of hematite deposit Yes Hematite 25832 Cumbria, England, UK Cumbria Crowley et al. (2014) JGS171_49 Edit Kristen000283 236 236 K-Ar illite D1 1428 Driggith Mine (Driggeth Mine), Caldbeck, Allerdale, Cumbria, England, UK Driggith Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000284 239 239 K-Ar illite D2 1428 Driggith Mine (Driggeth Mine), Caldbeck, Allerdale, Cumbria, England, UK Driggith Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000277 241 241 K-Ar illite S1 1445 Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UK Sandbed Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000278 263 263 K-Ar illite S2 1445 Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UK Sandbed Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000279 272 272 K-Ar illite S3 1445 Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UK Sandbed Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000280 243 243 K-Ar illite S4 1445 Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UK Sandbed Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000275 249 249 K-Ar illite PG1 4767 Potts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK Potts Ghyll Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000276 229 229 K-Ar illite PG2 4767 Potts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK Potts Ghyll Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000281 178 178 K-Ar illite R1 1444 Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK Roughtongill Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521 Edit Kristen000282 189 189 K-Ar illite R2 1444 Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK Roughtongill Mine Ineson and Mitchell (1974) 10.1017/S0016756800041571 GM111_521
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