Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

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The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Saguache Co., Colorado, USA

Oldest recorded age at locality: 1740
Youngest recorded age at locality: 23.03

mindat Locality ID: 23615
mindat URL: http://www.mindat.org/loc-23615.html

Tectonic Settings:

Total number of sublocalities beneath "Saguache Co., Colorado, USA": 460
Total number of bottom-level sublocalities: 425

Number of Child Localities: 63
Child Localities:
Alder Limonite Deposit (Round Hill Deposit; Miller Vein Deposit; Decker Creek Deposit)
Barium Lode Occurrence
Blake District (Mirage District; Cotton Creek District)
Bonanza District (Kerber Creek District)
Bondholder District
Boston; Fairview Occurrence
Cochetopa District (Cochetopa Creek District)
Cochetopa Dome
Cotton Creek
Crestone District
Crystal Hill District
Del Norte Thunder-egg Beds
Domingo District (Vulcan District)
Duncan
Embargo District (Embargo Creek District; Meyers Creek District)
Erie No. 28
Goose Creek District
Green Mountain (Iris) District
Green Mountain District (Gold Basin District)
Hayden Pass Area
Hermit Pass Area
Houselog Creek
Jacks Creek Area
La Garita
La Garita Creek
LaGarita Creek
Liberty District (Music District)
Marshall Pass District
Mount Ouray
Orient District
Poncha Pass Area
Prosser Rock Deposit
Razor Creek Dome
Saguache Park Area
San Luis Valley
Sargents Area
Sheep Creek Area
Smith Mercury Mine
Summer Coon Area
Tracy Canyon Area
Unknown Gold (MRDS - 10143151)
Unknown Gold (MRDS - 10167394)
Unknown Gold (MRDS - 10216377)
Unknown Gold (MRDS - 10216473)
Unknown Limestone - Dimension Occurrence (MRDS - 10190830)
Unknown Mica (MRDS - 10216381)
Unknown Perlite (MRDS - 10118949)
Unknown Perlite (MRDS - 10215752)
Unknown Perlite (MRDS - 10289142)
Unknown Perlite Occurrence (MRDS - 10239953)
Unknown Pumice (MRDS - 10191434)
Unknown Sodium Occurrence (MRDS - 10016251)
Unknown Stone - Dimension (MRDS - 10016273)
Unknown Uranium Occurrence (MRDS - 10167603)
Unknown Uranium Occurrence (MRDS - 10167878)
Unknown Uranium Occurrence (MRDS - 10191520)
Unknown Uranium Occurrence (MRDS - 10240405)
Unknown Uranium Occurrence (MRDS - 10264457)
Unknown Uranium Occurrence (MRDS - 10288892)
Valley View Hot Springs Area
Villa Grove Area
West Mine
White Earth District (Powderhorn District)

Latitude: 38°12'24"N
Longitude: 106°21'50"W
Decimal Degree (lat, lon): 38.206666666667,-106.36388888889
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe 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.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al As Au Ba Be C Ca Ce Cl Cu F Fe H Hg K Mg Mn Mo Na Nb O P Pb Pt S Sb Si Ta Te Th Ti U V W Y Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AcanthiteAllophaneAluniteAmorphousAmphiboleAndalusiteAragoniteAutuniteBaryteBeryl
BranneriteCalciteChalcopyriteClayClinozoisiteColumbiteCompreignaciteCopiapiteCopperCoronadite
CorrensiteCorundumCovelliteDiasporeEnargiteEpidoteEpsomiteFeldsparFluoriteFritzscheite
GarnetGypsumJohanniteKaoliniteMalachiteMarcasiteMeloniteMeta-autuniteMicaMolybdenite
MonaziteNatroautuniteNickelineNoneNot in a structural groupPetrovicitePhosphuranylitePolybasitePyritePyrophyllite
PyroxeneQuartzRamsdelliteRhodoniteRocksaltRutileScheeliteSchoepiteSmectite-vermiculiteSpangolite
SphaleriteSpinelTetrahedriteTurquoiseWavelliteWurtziteZippeiteZircon

133 IMA Minerals at location:
Abernathyite  (*)Acanthite  (*)Actinolite  (*)Allophane  (*)Altaite  (*)
Alunite  (*)Anatase  (*)Andalusite  (*)Anglesite  (*)Ankerite  (*)
Aragonite  (*)Augite  (*)Autunite  (*)Baryte  (*)Becquerelite  (*)
Beidellite  (*)Beryl  (*)Boltwoodite  (*)Bornite  (*)Brannerite  (*)
Calcite  (*)Celadonite  (*)Cerussite  (*)Chalcocite  (*)Chalcopyrite  (*)
Chlorargyrite  (*)Chrysocolla  (*)Cinnabar  (*)Clinozoisite  (*)Coffinite  (*)
Compreignacite  (*)Copiapite  (*)Copper  (*)Coronadite  (*)Covellite  (*)
Cryptomelane  (*)Diaspore  (*)Dolomite  (*)Empressite  (*)Enargite  (*)
Epidote  (*)Epsomite  (*)Euxenite-(Y)  (*)Fluorite  (*)Fourmarierite  (*)
Galena  (*)Goethite  (*)Gold  (*)Graphite  (*)Gypsum  (*)
Hausmannite  (*)Hematite  (*)Hessite  (*)Hollandite  (*)Hydrobiotite  (*)
Ianthinite  (*)Ilsemannite  (*)Jarosite  (*)Johannite  (*)Kaolinite  (*)
Kasolite  (*)Liebigite  (*)Mackayite  (*)Magnetite  (*)Malachite  (*)
Manganite  (*)Marcasite  (*)Mazzettiite  (*)Meta-autunite  (*)Metatorbernite  (*)
Metatyuyamunite  (*)Metazeunerite  (*)Microcline  (*)Mogánite  (*)Molybdenite  (*)
Monazite-(Ce)  (*)Montmorillonite  (*)Muscovite  (*)Opal  (*)Paratellurite  (*)
Pearceite  (*)Petzite  (*)Phlogopite  (*)Phosphuranylite  (*)Platinum  (*)
Polycrase-(Y)  (*)Poughite  (*)Proustite  (*)Pyrargyrite  (*)Pyrite  (*)
Pyrolusite  (*)Pyrophyllite  (*)Pyrrhotite  (*)Quartz  (*)Ramsdellite  (*)
Rhodochrosite  (*)Rhodonite  (*)Rickardite  (*)Rutile  (*)Sabugalite  (*)
Samarskite-(Y)  (*)Scheelite  (*)Schoepite  (*)Siderite  (*)Silver  (*)
Sklodowskite  (*)Smithsonite  (*)Soddyite  (*)Spangolite  (*)Spessartine  (*)
Sphalerite  (*)Stromeyerite  (*)Stützite  (*)Sylvanite  (*)Tellurium  (*)
Tennantite-(Fe)  (*)Tetrahedrite-(Zn)  (*)Torbernite  (*)Trona  (*)Turquoise  (*)
Uraninite  (*)Uranocircite-II  (*)Uranophane-α  (*)Uranopilite  (*)Vernadite  (*)
Wavellite  (*)Xenotime-(Y)  (*)Yttrocolumbite-(Y)  (*)Zeunerite  (*)Zincocopiapite  (*)
Zippeite  (*)Zircon  (*)Zunyite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Abernathyite  (*)NatroautuniteK(UO2)(AsO4)·3H2O119604716
Acanthite  (*)AcanthiteAg2S27.827.82195619,1956552793
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)211959733419
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O1195999470
Altaite  (*)RocksaltPbTe27.827.83195631,195663,195685489
Alunite  (*)NoneKAl3(SO4)2(OH)627.8223.033195712,195763,195901966
Anatase  (*)Not in a structural groupTiO227.8223.032195632,1956432162
Andalusite  (*)AndalusiteAl2SiO511958531310
Anglesite  (*)BarytePb(SO4)27.827.82195632,1957682734
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)211959773092
Aragonite  (*)AragoniteCa(CO3)11959773250
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O611959012060
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O20323.036195608,195619,195826,195962,195966,1959721272
Baryte  (*)BaryteBa(SO4)20323.0328195624,195625,195631,195632,195637,195643,195644,195657,195664,195668,195671,195674,195676,195687,195697,195700,195706,195707,195716,195718,195729,195768,195804,195808,195826,195891,195963,19597711547
Becquerelite  (*)NoneCa(UO2)6O4(OH)6·8H2O20394119596292
Beidellite  (*)Clay Smectite-vermiculite(Na,Ca)0.3Al2(Si,Al)4O10(OH)2·nH2O27.8223.033195687,195872,19587385
Beryl  (*)BerylBe3Al2Si6O1811958544286
Boltwoodite  (*)None(K,Na)(UO2)(SiO3OH)·1.5H2O20394119596267
Bornite  (*)NoneCu5FeS420323.037195662,195676,195684,195716,195727,195826,1959665516
Brannerite  (*)BranneriteUTi2O636.78303195818,195834,195974248
Calcite  (*)CalciteCa(CO3)27.8223.0316195621,195624,195631,195640,195654,195661,195674,195687,195716,195769,195771,195875,195891,195928,195938,19597727770
Celadonite  (*)Mica ClayKMgFe3+Si4O10(OH)23329.51195982309
Cerussite  (*)AragonitePb(CO3)27.827.811956324979
Chalcocite  (*)NoneCu2S20323.0311195624,195639,195655,195676,195716,195718,195727,195806,195869,195962,1959665707
Chalcopyrite  (*)ChalcopyriteCuFeS220323.0382195598,195610,195611,195621,195624,195627,195631,195632,195637,195639,195640,195641,195643,195649,195655,195657,195661,195662,195666,195671,195676,195686,195687,195690,195691,195693,195697,195701,195709,195711,195714,195716,195718,195723,195729,195753,195754,195755,195757,195760,195768,195769,195771,195772,195806,195826,195846,195847,195848,195849,195855,195857,195858,195867,195868,195928,195945,195946,195962,195977,196000,196001,196002,196003,196004,196005,196006,196007,196008,196009,196010,196011,196012,196013,196014,196015,196016,196017,196018,196019,196020,19602127198
Chlorargyrite  (*)RocksaltAgCl27.827.84195655,195872,195873,1958761382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O2195841,1959883531
Cinnabar  (*)NoneHgS11958202600
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)3329.511959821025
Coffinite  (*)ZirconU(SiO4)·nH2O203942195599,195966566
Compreignacite  (*)CompreignaciteK2(UO2)6O4(OH)6·7H2O20394119595327
Copiapite  (*)CopiapiteFe2+Fe3+4(SO4)6(OH)2·20H2O27.8223.031195632382
Copper  (*)CopperCu27.8223.0311957163846
Coronadite  (*)CoronaditePb(Mn4+6Mn3+2)O162195875,195891227
Covellite  (*)CovelliteCuS20323.0311195619,195631,195632,195639,195662,195676,195687,195716,195806,195962,1959664165
Cryptomelane  (*)CoronaditeK(Mn4+7Mn3+)O161195891599
Diaspore  (*)DiasporeAlO(OH)27.8223.031195619481
Dolomite  (*)NoneCaMg(CO3)220323.032195654,1959669895
Empressite  (*)NoneAgTe27.827.82195631,19568543
Enargite  (*)Enargite WurtziteCu3AsS427.8223.032195662,195716910
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)174023.032195621,1958048173
Epsomite  (*)EpsomiteMg(SO4)·7H2O27.8223.031195632484
Euxenite-(Y)  (*)ColumbiteY(NbTi)O6203948195608,195618,195844,195845,195854,195932,195934,195970414
Fluorite  (*)FluoriteCaF2174023.0310195600,195602,195632,195639,195643,195655,195662,195707,195804,1960529617
Fourmarierite  (*)SchoepitePb1-xO3-2x(UO2)4(OH)4+2x·4H2O203942195962,19596661
Galena  (*)RocksaltPbS20326122195598,195604,195610,195611,195624,195625,195627,195629,195631,195632,195635,195637,195639,195640,195641,195643,195644,195647,195649,195650,195653,195655,195657,195658,195660,195662,195663,195664,195665,195666,195668,195669,195670,195671,195674,195676,195678,195679,195683,195684,195686,195687,195689,195690,195692,195693,195697,195698,195699,195700,195701,195702,195703,195704,195705,195706,195708,195709,195710,195713,195714,195715,195716,195717,195718,195722,195723,195724,195725,195726,195727,195728,195729,195730,195753,195754,195755,195756,195757,195760,195761,195762,195768,195769,195771,195772,195776,195777,195782,195783,195784,195801,195802,195806,195847,195848,195857,195858,195892,195902,195903,195904,195905,195906,195907,195908,195909,195910,195912,195913,195914,195915,195923,195928,195930,195935,195940,195945,195946,195962,195963,19596624243
Goethite  (*)DiasporeFeO(OH)11959777437
Gold  (*)CopperAu27.827.834195598,195605,195610,195611,195685,195804,195809,195815,195846,195847,195848,195849,195851,195855,195857,195858,195859,195867,195868,195869,195872,195873,195875,195876,195892,195893,195894,195912,195930,195945,195946,195947,195977,19599330554
Graphite  (*)NoneC11959772812
Gypsum  (*)GypsumCa(SO4)·2H2O11958916890
Hausmannite  (*)SpinelMn2+Mn3+2O427.8223.034195595,195602,195711,195850350
Hematite  (*)CorundumFe2O3174023.038195594,195763,195804,195854,195960,195962,195966,19597714640
Hessite  (*)NoneAg2Te27.827.82195631,195674804
Hollandite  (*)CoronaditeBa(Mn4+6Mn3+2)O163195871,195875,195891243
Hydrobiotite  (*)Corrensite ClayK(Mg,Fe2+)6(Si,Al)8O20(OH)4·nH2O27.8223.03119576349
Ianthinite  (*)NoneU4+2(UO2)4O6(OH)4·9H2O203942195962,19596631
Ilsemannite  (*)NoneMo3O8·nH2O (?)1195826123
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)627.8223.032195632,1956392228
Johannite  (*)JohanniteCu(UO2)2(SO4)2(OH)2·8H2O119582669
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)427.8223.033195619,195763,1959015591
Kasolite  (*)NonePb(UO2)(SiO4)·H2O203942195962,195963198
Liebigite  (*)NoneCa2(UO2)(CO3)3·11H2O20394119596678
Mackayite  (*)NoneFe3+Te4+2O5(OH)27.8223.03119568512
Magnetite  (*)SpinelFe2+Fe3+2O420323.039195759,195763,195872,195873,195891,195892,195934,195947,19597114899
Malachite  (*)MalachiteCu2(CO3)(OH)227.8223.037195619,195697,195804,195808,195841,195872,19587312537
Manganite  (*)RutileMn3+O(OH)27.8223.031195711770
Marcasite  (*)MarcasiteFeS2203946195804,195813,195817,195826,195962,1959665674
Mazzettiite  (*)PetroviciteAg3HgPbSbTe527.8223.0311956631
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O203942195962,195966388
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O203941195966443
Metatyuyamunite  (*)FritzscheiteCa(UO2)2(VO4)2·3H2O203941195956129
Metazeunerite  (*)NoneCu(UO2)2(AsO4)2·8H2O203942195826,195962182
Microcline  (*)FeldsparK(AlSi3O8)20323.033195759,195934,1959714924
Mogánite  (*)NoneSiO2·nH2O2195891,19594143
Molybdenite  (*)MolybdeniteMoS227.8223.0324195617,195619,195980,196000,196001,196002,196003,196004,196005,196006,196007,196008,196009,196010,196011,196012,196014,196015,196016,196017,196018,196019,196020,1960215800
Monazite-(Ce)  (*)MonaziteCe(PO4)2195608,195845945
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O27.8223.032195763,1958911508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)227.8223.037195619,195763,195804,195806,195901,195928,19593417380
Opal  (*)AmorphousSiO2·nH2O2195891,1959422994
Paratellurite  (*)RutileTeO227.8223.03119561920
Pearceite  (*)Polybasite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]27.827.82195655,195716249
Petzite  (*)NoneAg3AuTe227.827.82195631,195674409
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)211958912273
Phosphuranylite  (*)PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4·8H2O203941195972182
Platinum  (*)CopperPt1195947485
Polycrase-(Y)  (*)ColumbiteY(Ti,Nb)2(O,OH)63195845,195933,195934121
Poughite  (*)NoneFe3+2(Te4+O3)2(SO4)·3H2O27.8223.03119568512
Proustite  (*)NoneAg3AsS327.827.81195655733
Pyrargyrite  (*)NoneAg3SbS327.827.82195655,1956621425
Pyrite  (*)PyriteFeS220323.0389195610,195611,195621,195624,195625,195627,195631,195632,195639,195640,195641,195643,195644,195647,195654,195655,195657,195660,195661,195662,195664,195668,195670,195671,195674,195676,195687,195690,195697,195699,195700,195702,195706,195707,195708,195709,195711,195716,195718,195722,195723,195725,195727,195729,195761,195763,195771,195772,195777,195804,195806,195820,195849,195851,195855,195867,195868,195869,195901,195905,195928,195940,195954,195962,195966,195984,195985,196000,196001,196002,196003,196004,196005,196006,196007,196008,196009,196010,196011,196012,196013,196014,196015,196016,196017,196018,196019,196020,19602139462
Pyrolusite  (*)RutileMnO227.8223.032195711,1960463106
Pyrophyllite  (*)Clay PyrophylliteAl2Si4O10(OH)21195901771
Pyrrhotite  (*)NickelineFe7S81740302195804,1959289056
Quartz  (*)QuartzSiO220323.0366195600,195602,195624,195625,195631,195632,195637,195639,195640,195641,195643,195644,195647,195655,195657,195661,195662,195663,195664,195668,195671,195674,195676,195685,195687,195690,195697,195700,195702,195706,195707,195708,195709,195711,195712,195713,195716,195718,195723,195727,195729,195759,195769,195771,195772,195804,195806,195826,195854,195871,195872,195873,195875,195891,195928,195934,195938,195941,195943,195947,195963,195966,195971,195977,195979,19599961156
Ramsdellite  (*)RamsdelliteMnO2119589188
Rhodochrosite  (*)CalciteMn(CO3)27.8223.0315195631,195632,195639,195640,195643,195644,195655,195657,195661,195662,195690,195707,195709,195716,1957291711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)27.8223.033195632,195643,195690969
Rickardite  (*)NoneCu3-xTe227.8223.03119563152
Rutile  (*)RutileTiO220323.034195632,195643,195712,1959705614
Sabugalite  (*)NoneHAl(UO2)4(PO4)4·16H2O20394119596687
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O84195608,195856,195932,195934353
Scheelite  (*)ScheeliteCa(WO4)11958114894
Schoepite  (*)Schoepite(UO2)4O(OH)6(H2O)620394119596294
Siderite  (*)CalciteFe(CO3)27.8223.034195640,195654,195716,1959776417
Silver  (*)CopperAg27.827.82195655,1957685186
Sklodowskite  (*)NoneMg(UO2)2(SiO3OH)2·6H2O20394119596356
Smithsonite  (*)CalciteZn(CO3)27.827.811956322473
Soddyite  (*)None(UO2)2(SiO4)(H2O)220394119596244
Spangolite  (*)SpangoliteCu6Al(SO4)(OH)12Cl·3H2O27.8223.031195716105
Spessartine  (*)GarnetMn2+3Al2(SiO4)311958451214
Sphalerite  (*)SphaleriteZnS20327.880195624,195625,195627,195629,195631,195632,195637,195639,195640,195641,195643,195644,195647,195649,195650,195655,195657,195660,195662,195664,195665,195666,195668,195670,195671,195674,195676,195678,195679,195684,195687,195689,195692,195699,195700,195701,195702,195703,195704,195705,195706,195708,195709,195711,195713,195715,195716,195718,195722,195723,195724,195725,195726,195727,195728,195729,195730,195753,195754,195755,195756,195757,195760,195761,195768,195769,195771,195772,195776,195777,195782,195801,195802,195806,195892,195909,195928,195930,195940,19596221482
Stromeyerite  (*)NoneCuAgS27.827.89195619,195632,195643,195662,195676,195687,195690,195716,195718332
Stützite  (*)NoneAg5-xTe3 (x = 0.24-0.36)27.827.8119563192
Sylvanite  (*)MeloniteAgAuTe427.827.83195631,195674,195900337
Tellurium  (*)NoneTe27.8223.032195631,195685190
Tennantite-(Fe)  (*)TetrahedriteCu6(Cu4Fe2)As4S1327.8223.0333195624,195627,195631,195632,195643,195655,195657,195661,195662,195664,195668,195670,195671,195674,195686,195687,195690,195697,195698,195699,195700,195702,195708,195709,195714,195716,195718,195722,195725,195727,195729,195769,1957711803
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1320327.85195631,195716,195806,195841,1959625317
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O20336.65195804,195813,195818,195826,1959661059
Trona  (*)NoneNa3(HCO3)(CO3)·2H2O1196033129
Turquoise  (*)TurquoiseCuAl6(PO4)4(OH)8·4H2O27.8223.032195763,195841484
Uraninite  (*)FluoriteUO220323.0315195599,195716,195768,195804,195808,195817,195823,195826,195834,195937,195954,195962,195963,195964,1959662718
Uranocircite-II  (*)NoneBa(UO2)2(PO4)2·10H2O36.78302195818,19583489
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O20323.0312195682,195804,195813,195817,195818,195826,195961,195962,195963,195964,195966,195972890
Uranopilite  (*)None(UO2)6(SO4)O2(OH)6·14H2O119582694
Vernadite  (*)None(Mn,Fe,Ca,Na)(O,OH)2·nH2O119589165
Wavellite  (*)WavelliteAl3(PO4)2(OH)3·5H2O27.8223.031195763374
Xenotime-(Y)  (*)ZirconY(PO4)203946195608,195618,195844,195932,195934,195958939
Yttrocolumbite-(Y)  (*)Columbite(Y,U,Fe2+)(Nb,Ta)O42039411959583
Zeunerite  (*)AutuniteCu(UO2)2(AsO4)2·12H2O203941195962185
Zincocopiapite  (*)CopiapiteZnFe3+4(SO4)6(OH)2·20H2O27.827.8119563211
Zippeite  (*)ZippeiteK2[(UO2)4(SO4)2O2(OH)2](H2O)4203943195804,195826,195966175
Zircon  (*)ZirconZr(SiO4)203945195844,195845,195932,195934,1959585251
Zunyite  (*)NoneAl13Si5O20(OH,F)18Cl27.8223.032195619,19590186


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Giersdorf_00000794The Lookout claims are a set of 34 claims in Saguache Co., Colorado, in the Marshall Pass uranium district. The district is located about 12 miles southeast of Sargents and spans the Saguache and Gunnison counties. Two of the major ore bodies, including the Lookout 22 body in particular, were found in alluvium at an elevation of approximately 10,000 feet.
Giersdorf_00000795The Lookout claims are a set of 34 claims in Saguache Co., Colorado, in the Marshall Pass uranium district. The district is located about 12 miles southeast of Sargents and spans the Saguache and Gunnison counties. Two of the major ore bodies, including the Lookout 22 body in particular, were found in alluvium at an elevation of approximately 10,000 feet.
Giersdorf_00000796The Lookout claims are a set of 34 claims in Saguache Co., Colorado, in the Marshall Pass uranium district. The district is located about 12 miles southeast of Sargents and spans the Saguache and Gunnison counties. Two of the major ore bodies, including the Lookout 22 body in particular, were found in alluvium at an elevation of approximately 10,000 feet.
Jen_0000012Proterozoic Colorado Province 500 km wide bet added to the southern margin of the Archaean Wyoming craton


16 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Hg-0010027.8223.03mid to late Oligocene?-?Volcanism and Caldera development    MazzettiiteHg50124Bonanza District (Kerber Creek District), Saguache Co., Colorado, USA Pride and Hasenohr (1983)10.1016/0375-6742(83)90034-1JGE19_405 
Hg-00100a27.827.827.8?-?     MazzettiiteHg, Au, Ag, Pb, Zn50124Bonanza District (Kerber Creek District), Saguache Co., Colorado, USA Rose and Pride (2010) GSAAP42_54Eruption of the Bonanza tuff 27.8 ma preceded caldera formation and development of gold, silver, lead, zinc, and copper mineralization in the Bonanza region
Mo-0025627.8223.03mid to late Oligocene?-?Volcanism and Caldera development    MolybdeniteMo50124Bonanza District (Kerber Creek District), Saguache Co., Colorado, USA Pride and Hasenohr (1983)10.1016/0375-6742(83)90034-1JGE19_405 
Mo-00256a27.827.827.8?-?     MolybdeniteMo, Au, Ag, Pb, Zn50124Bonanza District (Kerber Creek District), Saguache Co., Colorado, USA Rose and Pride (2010) GSAAP42_54Eruption of the Bonanza tuff 27.8 ma preceded caldera formation and development of gold, silver, lead, zinc, and copper mineralization in the Bonanza region
NAVDAT-4581227.52626.75±0.75   45812    118770Unnamed Gold - Silver - Lead Prospect (MRDS - 10013057), Bondholder District, Saguache Co., Colorado, USA NAVDAT NAVDAT 
NAVDAT-4577926.926.126.5±0.4   45779    118803Unnamed Silver - Gold Prospects (MRDS - 10013058), Bondholder District, Saguache Co., Colorado, USA NAVDAT NAVDAT 
Jen_0000012174017301740-1730Sr-Srage of pluton generationwhole rock   Andalusite, Cordierite, StauroliteNi, Sr, Zr118476Cochetopa Creek Occurrence, Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USACochetopa SuccessionČerný (1991)10.1016/0301-9268(91)90111-MPR51_429Product of arc magmatism and cannibalistic sedimentation along a convergent margin of the craton
NAVDAT-4618536.7836.636.69±0.09  sanidine46185  Sanidine  118553La Rue Claims (La Rue No. 2; La Rue No. 22), Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA NAVDAT NAVDAT 
NAVDAT-46125363033±3   46125    133855Unnamed Prospect, Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA NAVDAT NAVDAT 
Giersdorf_00000794949494202Pb-238UThe ages given are noted by the author to be insufficiently sourced as they are only derived from a single sample. The author expresses that more Marshall Pass uranium minerals should be dated to collect an average age for the set of deposits.uraninite   UraniniteAutunite, Boltwoodite, Chalcocite, Chalcopyrite, Covellite, Galena, Ianthinite, Marcasite, Metazeunerite, Pyrite, Schoepite, Soddyite, Sphalerite, Uraninite, ZeuneriteU30136Lookout No. 22 Claim, Marshall Pass District, Saguache Co., Colorado, USALookout No. 22 ClaimGross (1965) AM50_909Pb202-U238 age for a uraninite sample
Giersdorf_00000795999999207Pb-235UThe ages given are noted by the author to be insufficiently sourced as they are only derived from a single sample. The author expresses that more Marshall Pass uranium minerals should be dated to collect an average age for the set of deposits.uraninite   UraniniteAutunite, Boltwoodite, Chalcocite, Chalcopyrite, Covellite, Galena, Ianthinite, Marcasite, Metazeunerite, Pyrite, Schoepite, Soddyite, Sphalerite, Uraninite, ZeuneriteU30136Lookout No. 22 Claim, Marshall Pass District, Saguache Co., Colorado, USALookout No. 22 ClaimGross (1965) AM50_909Pb207-U235 age for a uraninite sample
Giersdorf_00000796203203203207Pb-206PbThe ages given are noted by the author to be insufficiently sourced as they are only derived from a single sample. The author expresses that more Marshall Pass uranium minerals should be dated to collect an average age for the set of deposits.uraninite   UraniniteAutunite, Boltwoodite, Chalcocite, Chalcopyrite, Covellite, Galena, Ianthinite, Marcasite, Metazeunerite, Pyrite, Schoepite, Soddyite, Sphalerite, Uraninite, ZeuneriteU30136Lookout No. 22 Claim, Marshall Pass District, Saguache Co., Colorado, USALookout No. 22 ClaimGross (1965) AM50_909Pb207-Pb206 age for a uraninite sample
NAVDAT-461783329.531.25±1.75   46178    134139Razor Creek Dome, Saguache Co., Colorado, USA NAVDAT NAVDAT 
NAVDAT-461793329.531.25±1.75   46179    134139Razor Creek Dome, Saguache Co., Colorado, USA NAVDAT NAVDAT 
NAVDAT-461803329.531.25±1.75   46180    118636Smith Mercury Mine, Saguache Co., Colorado, USA NAVDAT NAVDAT 
NAVDAT-446635.623.829.7±5.9   4466    118496Del Norte Bog Iron Deposits (Del Norte Limonite), Summer Coon Area, Saguache Co., Colorado, USA NAVDAT NAVDAT 

SampleSource LocalityReference URL
R070445Klondike Mine, Bonanza District (Kerber Creek District), Saguache Co., Colorado, USAhttps://rruff.info/R070445
R070701Klondike Mine, Bonanza District (Kerber Creek District), Saguache Co., Colorado, USAhttps://rruff.info/R070701

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