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 (Mg4.5-2.5 Fe2+ 0.5-2.5 )Si8 O22 (OH)2 980 922 2 104508 ,104512 3419 Albite (*) Feldspar Na(AlSi3 O8 ) 980 922 5 104498 ,104508 ,104509 ,104511 ,104512 8803 Alluaudite (*) Alluaudite NaMnFe3+ 2 (PO4 )3 980 922 4 104490 ,104492 ,104508 ,104512 94 Amblygonite (*) None LiAl(PO4 )F 980 922 5 104498 ,104508 ,104509 ,104511 ,104512 244 Anthoinite (*) Anthoinite AlWO3 (OH)3 5 104456 ,104457 ,104479 ,104481 ,104486 14 Arsenopyrite (*) Arsenopyrite FeAsS 2 104457 ,104474 9052 Attakolite (*) None CaMn2+ Al4 (HSiO4 )(PO4 )3 (OH)4 950 922 1 104508 3 Augelite (*) None Al2 (PO4 )(OH)3 980 922 3 104508 ,104511 ,104512 79 Autunite (*) Autunite Ca(UO2 )2 (PO4 )2 ·10-12H2 O 950 922 1 104508 1272 Barbosalite (*) Lazulite Fe2+ Fe3+ 2 (PO4 )2 (OH)2 950 922 1 104508 43 Berlinite (*) Quartz Al(PO4 ) 980 922 4 104508 ,104510 ,104511 ,104512 28 Bermanite (*) Arthurite Mn2+ Mn3+ 2 (PO4 )2 (OH)2 ·4H2 O 950 922 1 104508 55 Bertossaite (*) Carminite Li2 CaAl4 (PO4 )4 (OH)4 980 922 2 104508 ,104511 6 Beryl (*) Beryl Be3 Al2 Si6 O18 980 922 6 104496 ,104498 ,104508 ,104509 ,104511 ,104512 4286 Bismuth (*) Arsenic Bi 950 922 2 104457 ,104508 1966 Bismuthinite (*) Stibnite Bi2 S3 950 922 2 104457 ,104508 1935 Bismutite (*) Bismutite Bi2 O2 (CO3 ) 950 922 1 104508 716 Bjarebyite (*) Bjarebyite BaMn2+ 2 Al2 (PO4 )3 (OH)3 950 922 1 104508 6 Brazilianite (*) Not in a structural group NaAl3 (PO4 )2 (OH)4 980 922 2 104508 ,104511 59 Burangaite (*) Dufrénite NaFe2+ Al5 (PO4 )4 (OH)6 ·2H2 O 950 922 1 104508 3 Cacoxenite (*) None Fe3+ 24 AlO6 (PO4 )17 (OH)12 ·75H2 O 950 922 1 104508 280 Cancrinite (*) Cancrinite (Na,Ca, )8 (Al6 Si6 )O24 (CO3 ,SO4 )2 ·2H2 O 950 922 1 104508 232 Cassiterite (*) Rutile SnO2 980 922 10 104459 ,104466 ,104474 ,104483 ,104492 ,104498 ,104503 ,104508 ,104509 ,104512 5171 Cerussite (*) Aragonite Pb(CO3 ) 950 922 1 104508 4979 Chalcopyrite (*) Chalcopyrite CuFeS2 950 922 3 104457 ,104474 ,104508 27198 Childrenite (*) Childrenite Fe2+ Al(PO4 )(OH)2 ·H2 O 980 922 2 104508 ,104511 93 Columbite-(Fe) (*) Columbite Fe2+ Nb2 O6 932.3 929.9 2 104503 ,104510 518 Cosalite (*) None Pb2 Bi2 S5 1 104457 344 Crandallite (*) Alunite CaAl3 (PO4 )(PO3 OH)(OH)6 950 922 1 104508 310 Cryptomelane (*) Coronadite K(Mn4+ 7 Mn3+ )O16 950 922 1 104508 599 Cyrilovite (*) Wardite NaFe3+ 3 (PO4 )2 (OH)4 ·2H2 O 935.4 923.4 1 104492 60 Dufrénite (*) Dufrénite Ca0.5 Fe2+ Fe3+ 5 (PO4 )4 (OH)6 ·2H2 O 950 922 2 104490 ,104508 139 Elbaite (*) Tourmaline Na(Al1.5 Li1.5 )Al6 (Si6 O18 )(BO3 )3 (OH)3 (OH) 950 922 2 104507 ,104508 520 Eosphorite (*) Childrenite Mn2+ Al(PO4 )(OH)2 ·H2 O 980 922 2 104508 ,104511 128 Epidote (*) Epidote Clinozoisite Ca2 (Al2 Fe3+ )[Si2 O7 ][SiO4 ]O(OH) 950 922 1 104508 8173 Ferberite (*) Columbite Fe2+ (WO4 ) 6 104457 ,104479 ,104481 ,104486 ,104487 ,104503 551 Fergusonite-(Y) (*) Scheelite YNbO4 950 922 1 104508 196 Ferrisicklerite (*) Olivine Li1-x (Fe3+ ,Mn2+ )(PO4 ) 950 922 2 104490 ,104508 108 Ferroalluaudite (*) Alluaudite NaFe2+ Fe3+ 2 (PO4 )3 1 104504 11 Ferrorosemaryite (*) None NaFe2+ (Fe3+ Al)(PO4 )3 980 980 1 104511 1 Fillowite (*) Fillowite Na3 CaMn2+ 11 (PO4 )9 980 922 3 104504 ,104508 ,104512 14 Florencite-(Nd) (*) Alunite NdAl3 (PO4 )2 (OH)6 1 104504 6 Fluorapatite (*) Apatite Ca5 (PO4 )3 F 950 922 2 104490 ,104508 2740 Foordite (*) None Sn2+ Nb2 O6 1 104503 4 Frondelite (*) Rockbridgeite (Mn2+ 0.5 Fe3+ 0.5 )2 Fe3+ 3 (PO4 )3 (OH)5 950 922 1 104508 52 Galena (*) Rocksalt PbS 950 922 3 104457 ,104474 ,104508 24243 Gatumbaite (*) None CaAl2 (PO4 )2 (OH)2 ·H2 O 950 922 1 104508 5 Goethite (*) Diaspore FeO(OH) 950 922 2 104457 ,104508 7437 Gormanite (*) Souzalite Fe2+ 3 Al4 (PO4 )4 (OH)6 ·2H2 O 950 922 1 104508 23 Graftonite (*) Graftonite Fe2+ Fe2+ 2 (PO4 )2 950 922 1 104508 107 Griphite (*) None Ca(Mn2+ ,Na,Li)6 Fe2+ Al2 (PO4 )6 (F,OH)2 950 922 1 104508 8 Hagendorfite (*) Alluaudite Na2 MnFe2+ Fe3+ (PO4 )3 935.4 923.4 1 104492 17 Hematite (*) Corundum Fe2 O3 950 922 2 104457 ,104508 14640 Heterosite (*) Olivine Fe3+ (PO4 ) 980 922 5 104490 ,104492 ,104504 ,104508 ,104512 204 Holmquistite (*) Amphibole Li2 (Mg3 Al2 )Si8 O22 (OH)2 935.4 923.4 1 104492 42 Hureaulite (*) Hureaulite Mn2+ 5 (PO3 OH)2 (PO4 )2 ·4H2 O 950 922 1 104508 125 Hydrokenoelsmoreite (*) Pyrochlore 2 W2 O6 (H2 O)2 104457 ,104486 57 Hydrotungstite (*) None WO2 (OH)2 ·H2 O 1 104503 13 Ixiolite (*) Columbite (Ta2/3 Mn2+ 1/3 )O2 1 104503 148 Johnsomervilleite (*) Fillowite Na3 CaFe2+ 11 (PO4 )9 1 104504 11 Kaolinite (*) Clay Kaolinite Al2 Si2 O5 (OH)4 980 957.3 6 104457 ,104474 ,104498 ,104504 ,104511 ,104512 5591 Lacroixite (*) Titanite NaAl(PO4 )F 980 922 4 104508 ,104510 ,104511 ,104512 22 Landesite (*) Reddingite Mn2+ 9 Fe3+ 3 (PO4 )8 (OH)3 ·9H2 O 950 922 1 104508 14 Lazulite (*) Lazulite MgAl2 (PO4 )2 (OH)2 980 922 2 104508 ,104512 232 Leucophosphite (*) Leucophosphite KFe3+ 2 (PO4 )2 (OH)·2H2 O 950 922 1 104508 110 Lipscombite (*) Lipscombite Fe2+ Fe3+ 2 (PO4 )2 (OH)2 950 922 1 104508 47 Lithiophilite (*) Olivine LiMn2+ (PO4 ) 980 922 2 104508 ,104512 155 Magnetite (*) Spinel Fe2+ Fe3+ 2 O4 980 922 2 104508 ,104512 14899 Manganite (*) Rutile Mn3+ O(OH) 980 980 1 104512 770 Marcasite (*) Marcasite FeS2 975 922 2 104508 ,104509 5674 Meymacite (*) None WO3 ·2H2 O 1 104457 10 Microcline (*) Feldspar K(AlSi3 O8 ) 980 922 2 104508 ,104512 4924 Millisite (*) Wardite NaCaAl6 (PO4 )4 (OH)9 ·3H2 O 1 104504 12 Mitridatite (*) Arseniosiderite Ca2 Fe3+ 3 O2 (PO4 )3 ·3H2 O 950 922 2 104504 ,104508 129 Molybdenite (*) Molybdenite MoS2 1 104457 5800 Monazite-(Ce) (*) Monazite Ce(PO4 ) 950 922 1 104508 945 Montebrasite (*) None LiAl(PO4 )(OH) 980 922 4 104508 ,104510 ,104511 ,104512 200 Muscovite (*) Mica Clay KAl2 (Si3 Al)O10 (OH)2 980 922 6 104457 ,104474 ,104486 ,104508 ,104509 ,104512 17380 Opal (*) Amorphous SiO2 ·n H2 O 950 922 1 104508 2994 Orthoclase (*) Feldspar K(AlSi3 O8 ) 950 922 1 104508 2349 Paragonite (*) Mica Clay NaAl2 (Si3 Al)O10 (OH)2 980 922 2 104508 ,104512 247 Phlogopite (*) Mica Clay KMg3 (AlSi3 O10 )(OH)2 950 922 1 104508 2273 Phosphosiderite (*) Phosphosiderite Fe3+ (PO4 )·2H2 O 950 922 2 104490 ,104508 182 Purpurite (*) Olivine Mn3+ (PO4 ) 950 922 2 104490 ,104508 80 Pyrite (*) Pyrite FeS2 950 922 4 104457 ,104474 ,104486 ,104508 39462 Quartz (*) Quartz SiO2 980 922 12 104457 ,104474 ,104479 ,104481 ,104486 ,104493 ,104498 ,104503 ,104508 ,104509 ,104511 ,104512 61156 Raspite (*) Raspite Pb(WO4 ) 2 104457 ,104486 26 Rhodonite (*) Rhodonite CaMn3 Mn(Si5 O15 ) 950 922 1 104508 969 Rockbridgeite (*) Rockbridgeite (Fe2+ 0.5 Fe3+ 0.5 )2 Fe3+ 3 (PO4 )3 (OH)5 950 922 2 104490 ,104508 206 Rosemaryite (*) None NaMn2+ (Fe3+ Al)(PO4 )3 950 922 1 104508 7 Rutile (*) Rutile TiO2 1 104457 5614 Samuelsonite (*) None Ca9 Mn2+ 4 Al2 (PO4 )10 (OH)2 950 922 1 104508 4 Sarcopside (*) None Fe2+ 3 (PO4 )2 1 104504 58 Scheelite (*) Scheelite Ca(WO4 ) 950 922 2 104457 ,104508 4894 Schorl (*) Tourmaline NaFe2+ 3 Al6 (Si6 O18 )(BO3 )3 (OH)3 (OH) 950 922 2 104507 ,104508 2705 Scorodite (*) None Fe3+ (AsO4 )·2H2 O 950 922 1 104508 1153 Scorzalite (*) Lazulite Fe2+ Al2 (PO4 )2 (OH)2 980 922 4 104508 ,104510 ,104511 ,104512 60 Serrabrancaite (*) Kieserite Mn(PO4 )·H2 O 950 922 1 104508 8 Sicklerite (*) Olivine LiMn2+ (PO4 ) 950 922 1 104508 66 Siderite (*) Calcite Fe(CO3 ) 1 104457 6417 Siderophyllite (*) Mica KFe2+ 2 Al(Si2 Al2 )O10 (OH)2 950 922 2 104490 ,104508 92 Arrojadite-(BaFe) (*) Arrojadite BaFe2+ (CaNa2 )Fe2+ 13 Al(PO4 )11 (PO3 OH)(OH)2 950 922 1 104508 7 Souzalite (*) Souzalite Mg3 Al4 (PO4 )4 (OH)6 ·2H2 O 980 980 1 104511 11 Sphalerite (*) Sphalerite ZnS 950 922 1 104508 21482 Spodumene (*) Pyroxene LiAlSi2 O6 980 922 3 104508 ,104511 ,104512 688 Staněkite (*) Wagnerite Fe3+ Mn2+ O(PO4 ) 950 922 1 104508 13 Stewartite (*) Stewartite Mn2+ Fe3+ 2 (PO4 )2 (OH)2 ·8H2 O 950 922 1 104508 48 Strengite (*) None Fe3+ (PO4 )·2H2 O 980 922 2 104508 ,104512 263 Talc (*) Clay Talc Mg3 Si4 O10 (OH)2 950 922 2 104493 ,104508 3337 Tantalite-(Fe) (*) Columbite Fe2+ Ta2 O6 950 922 1 104508 99 Tantalite-(Mn) (*) Columbite Mn2+ Ta2 O6 950 922 1 104508 211 Tavorite (*) None LiFe3+ (PO4 )(OH) 950 922 1 104508 35 Thoreaulite (*) None Sn2+ Ta2 O6 950 922 1 104508 9 Topaz (*) Topaz Al2 SiO4 F2 950 922 1 104508 1476 Triphylite (*) Olivine LiFe2+ (PO4 ) 980 922 3 104492 ,104508 ,104512 313 Triplite (*) Triplite Mn2+ 2 (PO4 )F 980 922 2 104508 ,104511 233 Trolleite (*) None Al4 (PO4 )3 (OH)3 980 922 2 104508 ,104511 16 Tungstite (*) Tungstite WO3 ·H2 O 2 104457 ,104486 118 Turquoise (*) Turquoise CuAl6 (PO4 )4 (OH)8 ·4H2 O 980 980 1 104511 484 Variscite (*) None Al(PO4 )·2H2 O 980 922 3 104498 ,104508 ,104511 301 Varulite (*) Alluaudite Na2 Mn(MnFe3+ )(PO4 )3 950 922 1 104508 15 Vernadite (*) None (Mn,Fe,Ca,Na)(O,OH)2 ·nH2 O 950 922 1 104508 65 Vivianite (*) Vivianite Fe2+ 3 (PO4 )2 ·8H2 O 950 922 2 104490 ,104508 636 Wardite (*) Wardite NaAl3 (PO4 )2 (OH)4 ·2H2 O 950 922 1 104508 58 Wavellite (*) Wavellite Al3 (PO4 )2 (OH)3 ·5H2 O 980 922 2 104508 ,104511 374 Wyllieite (*) None NaNaMn(Fe2+ Al)(PO4 )3 950 922 1 104508 17 Yttrotungstite-(Ce) (*) Yttrotungstite CeW2 O6 (OH)3 2 104457 ,104486 5 Zircon (*) Zircon Zr(SiO4 ) 950 922 1 104508 5251
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 Alexandra-0243 935.4 923.4 929.4±6 U-Pb Age of Nb-Ta mineralization columbite-(mn) 150 Columbite-(Mn) Ta, Nb 57927 Kibingo Pegmatite (Kibinga [relating To A Hill]; Lemera; Mwaka), Gitarama – Kibuye Road, Southern Province, Rwanda Kibingo Melcher et al. (2015) 10.1016/j.oregeorev.2013.09.003 OGR64_667 Edit Alexandra-0167 974.7 957.3 966 ± 8.7 U-Pb Age of pegmatite columbite, tantalite coltan 233 210669 Bijyojyo, Western Province, Rwanda Bijyoyo Dewaele et al. (2011) 10.1016/j.jafrearsci.2011.04.004 JAES61_10 Edit Alexandra-0165 950 922 936 ± 14 U-Pb Age of pegmatite columbite, tantalite coltan 87 2824 Buranga Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda Buranga pegmatite Dewaele et al. (2011) 10.1016/j.jafrearsci.2011.04.004 JAES61_10 Edit Alexandra-0166 975 930 975-930 U-Pb Age of pegmatite columbite, tantalite coltan 48 221139 Gatumba Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda Gatumba Pegmatite Dewaele et al. (2011) 10.1016/j.jafrearsci.2011.04.004 JAES61_10 Edit Alexandra-0234 932.3 929.9 931.1±1.2 U-Pb Age of Nb-Ta mineralization columbite-(fe) 151 Columbite-(Fe) Ta, Nb 243295 Rongi Amblygonite Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda Rongi Melcher et al. (2015) 10.1016/j.oregeorev.2013.09.003 OGR64_667 Edit Grew_Li_2019_0007 980 980 980 Bertossaite 58310 Rubindi Pegmatite (Kabilizi), Gatumba, Ngororero District, Western Province, Rwanda Rubindi and Buranga (type) pegmatites, Gatumba district, Western Province, Rwanda Hulsbosch et al. (2013, 2014) GB16_105, GCA132_349
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