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. |
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 |
---|---|---|---|---|---|---|---|
Actinolite (*) | Amphibole | Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2 | 1 | 228970 | 3419 | ||
Aegirine (*) | Pyroxene | NaFe3+Si2O6 | 56.6 | 42 | 3 | 228972,228973,228977 | 1022 |
Albite (*) | Feldspar | Na(AlSi3O8) | 1 | 228970 | 8803 | ||
Analcime (*) | Analcime | Na(AlSi2O6)·H2O | 2 | 228970,228973 | 1627 | ||
Anatase (*) | Not in a structural group | TiO2 | 1 | 228968 | 2162 | ||
Ancylite-(Ce) (*) | Ancylite | CeSr(CO3)2(OH)·H2O | 2 | 228968,228973 | 92 | ||
Annite (*) | Mica Clay | KFe2+3(AlSi3O10)(OH)2 | 1 | 228973 | 356 | ||
Aragonite (*) | Aragonite | Ca(CO3) | 83.6 | 72.1 | 1 | 228974 | 3250 |
Augite (*) | Pyroxene | (Ca,Mg,Fe)2Si2O6 | 1 | 228968 | 2060 | ||
Baryte (*) | Baryte | Ba(SO4) | 56.6 | 42 | 3 | 228968,228972,228977 | 11547 |
Barytolamprophyllite (*) | None | (BaK)Ti2Na3Ti(Si2O7)2O2(OH)2 | 1 | 228973 | 21 | ||
Bastnäsite-(Ce) (*) | Bastnäsite | Ce(CO3)F | 2 | 228968,228973 | 304 | ||
Burbankite (*) | Burbankite | (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 | 56.6 | 42 | 2 | 228972,228977 | 52 |
Calcite (*) | Calcite | Ca(CO3) | 83.6 | 42 | 4 | 228970,228972,228974,228977 | 27770 |
Calkinsite-(Ce) (*) | None | Ce2(CO3)3·4H2O | 56.6 | 42 | 2 | 228972,228977 | 8 |
Cancrinite (*) | Cancrinite | (Na,Ca, )8(Al6Si6)O24(CO3,SO4)2·2H2O | 1 | 228968 | 232 | ||
Chalcopyrite (*) | Chalcopyrite | CuFeS2 | 2 | 228969,228972 | 27198 | ||
Chevkinite-(Ce) (*) | Chevkinite | Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2 | 2 | 228968,228973 | 89 | ||
Crichtonite (*) | Crichtonite | Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 | 1 | 228973 | 27 | ||
Datolite (*) | Gadolinite | CaB(SiO4)(OH) | 1 | 228970 | 498 | ||
Epidote (*) | Epidote Clinozoisite | Ca2(Al2Fe3+)[Si2O7][SiO4]O(OH) | 1 | 228970 | 8173 | ||
Eudialyte (*) | Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 | 1 | 228968 | 182 | ||
Fluorapatite (*) | Apatite | Ca5(PO4)3F | 1 | 228973 | 2740 | ||
Galena (*) | Rocksalt | PbS | 3 | 228969,228970,228972 | 24243 | ||
Gibbsite (*) | None | Al(OH)3 | 1 | 228973 | 504 | ||
Goethite (*) | Diaspore | FeO(OH) | 1 | 228972 | 7437 | ||
Gypsum (*) | Gypsum | Ca(SO4)·2H2O | 83.6 | 72.1 | 1 | 228974 | 6890 |
Hastingsite (*) | Amphibole | NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 | 1 | 228970 | 209 | ||
Henrymeyerite (*) | Coronadite | Ba(Ti7Fe2+)O16 | 1 | 228973 | 9 | ||
Ilmenite (*) | Corundum | Fe2+Ti4+O3 | 2 | 228972,228973 | 5433 | ||
Lamprophyllite (*) | None | (SrNa)Ti2Na3Ti(Si2O7)2O2(OH)2 | 2 | 228968,228973 | 63 | ||
Leucite (*) | Analcime | K(AlSi2O6) | 1 | 228968 | 233 | ||
Loparite-(Ce) (*) | Perovskite | (Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6 | 1 | 228973 | 57 | ||
Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 2 | 228970,228973 | 14899 | ||
Microcline (*) | Feldspar | K(AlSi3O8) | 1 | 228973 | 4924 | ||
Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 1 | 228973 | 17380 | ||
Natrolite (*) | Natrolite | Na2(Si3Al2)O10·2H2O | 1 | 228973 | 1236 | ||
Nepheline (*) | Tridymite | Na3K(Al4Si4O16) | 1 | 228973 | 884 | ||
Orthoclase (*) | Feldspar | K(AlSi3O8) | 1 | 228968 | 2349 | ||
Perovskite (*) | Perovskite | CaTiO3 | 2 | 228968,228978 | 495 | ||
Phlogopite (*) | Mica Clay | KMg3(AlSi3O10)(OH)2 | 1 | 228973 | 2273 | ||
Prehnite (*) | Prehnite | Ca2Al(Si3Al)O10(OH)2 | 1 | 228970 | 1898 | ||
Priderite (*) | Coronadite | K(Ti7Fe3+)O16 | 1 | 228973 | 41 | ||
Pyrite (*) | Pyrite | FeS2 | 4 | 228969,228970,228972,228978 | 39462 | ||
Pyrophanite (*) | Corundum | Mn2+TiO3 | 2 | 228968,228973 | 244 | ||
Pyrrhotite (*) | Nickeline | Fe7S8 | 4 | 228968,228969,228972,228978 | 9056 | ||
Quartz (*) | Quartz | SiO2 | 1 | 228968 | 61156 | ||
Rutile (*) | Rutile | TiO2 | 2 | 228968,228973 | 5614 | ||
Sanidine (*) | Feldspar | K(AlSi3O8) | 2 | 228968,228972 | 598 | ||
Sodalite (*) | Cancrinite-sodalite Sodalite | Na4(Si3Al3)O12Cl | 1 | 228968 | 444 | ||
Strontiochevkinite (*) | Chevkinite | (Sr,Ce,La)4Fe2+(Ti,Zr)4O8(Si2O7)2 | 1 | 228973 | 3 | ||
Tetrahedrite-(Zn) (*) | Tetrahedrite | Cu6(Cu4Zn2)Sb4S13 | 1 | 228972 | 5317 | ||
Thomsonite-Ca (*) | Thomsonite | NaCa2(Al5Si5)O20·6H2O | 1 | 228970 | 452 | ||
Thorite (*) | Zircon | Th(SiO4) | 1 | 228973 | 1006 | ||
Titanite (*) | Titanite | CaTi(SiO4)O | 2 | 228970,228973 | 4899 | ||
Whewellite (*) | Oxalate | Ca(C2O4)·H2O | 83.6 | 72.1 | 1 | 228974 | 66 |
Zircon (*) | Zircon | Zr(SiO4) | 2 | 228973,228978 | 5251 |
Age ID | Locality Notes |
---|---|
Michelle_574 | Whewellite, calcium oxalate monohydrate, has been found as a crystal perched on terminated' unetched, drusy calcite crystals in a septarian limestone concretion in the marine Bearpaw shale of late cretaceous age near Havre, Montana. |
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_574 | 83.6 | 72.1 | Campanian | stratigraphy | Age of Bearpaw Shale | high | Whewellite | 30928 | Havre, Hill Co., Montana, USA | Havre | Pecora and Kerr (1954) | AM39_208 | Age of Bearpaw Shale, containing the limestone concretions in which whewellite has been found. | ||||||||
NAVDAT-30343 | 54 | 42 | 48±6 | 30343 | 163603 | Nepheline Occurrences, Hill Co., Montana, USA | NAVDAT | NAVDAT | |||||||||||||
NAVDAT-30378 | 54 | 42 | 48±6 | 30378 | 163603 | Nepheline Occurrences, Hill Co., Montana, USA | NAVDAT | NAVDAT | |||||||||||||
NAVDAT-29747 | 56.6 | 48.4 | 52.5±4.1 | 29747 | 164302 | Rocky Boy Stock Occurrence, Hill Co., Montana, USA | NAVDAT | NAVDAT | |||||||||||||
NAVDAT-30377 | 54 | 42 | 48±6 | 30377 | 164302 | Rocky Boy Stock Occurrence, Hill Co., Montana, USA | NAVDAT | NAVDAT |
Sample | Source Locality | Reference URL |
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All locality data graciously provided by mindat.org
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