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.

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.

Acanthite	Allanite	Allophane	Alunite	Amorphous	Amphibole	Analcime	Andalusite	Apatite	Aragonite
Arsenic	Arsenopyrite	Atacamite	Autunite	Baryte	Bastnäsite	Beryl	Bismutite	Brucite	Buckhornite
Calcite	Cancrinite-sodalite	Cerite	Chalcanthite	Chalcopyrite	Clay	Clinozoisite	Cobaltite	Columbite	Copper
Corrensite	Corundum	Covellite	Diaspore	Digenite	Enargite	Epidote	Epsomite	Feldspar	Fluorite
Fornacite	Gadolinite	Garnet	Gatelite	Geocronite	Germanite	Halotrichite	Jalpaite	Kaolinite	Lillianite
Linarite	Malachite	Marcasite	Melonite	Meneghinite	Mica	Millerite	Molybdenite	Monazite	Nickeline
None	Not in a structural group	Pentlandite	Perovskite	Polybasite	Prehnite	Pyrite	Pyrochlore	Pyroxene	Quartz
Rocksalt	Rutile	Scheelite	Serpentine	Smectite-vermiculite	Sodalite	Sphalerite	Spinel	Stannite	Stibnite
Sulphur	Tetradymite	Tetrahedrite	Titanite	Tungstite	Vesuvianite	Vivianite	Weberite	Wollastonite	Wurtzite
Zemannite	Zircon

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 Bi C Ca Ce Cl Co Cu F Fe Ge H Hg I K La Mg Mn Mo Na Nb Ni O P Pb S Sb Si Sn Sr Te Th Ti U V W Y Zn Zr

Elements from minerals reported directly at this locality: As Hg S

Structural Groups for minerals in this locality:
Acanthite Allanite Allophane Alunite Amorphous Amphibole Analcime Andalusite Apatite Aragonite
Arsenic Arsenopyrite Atacamite Autunite Baryte Bastnäsite Beryl Bismutite Brucite Buckhornite
Calcite Cancrinite-sodalite Cerite Chalcanthite Chalcopyrite Clay Clinozoisite Cobaltite Columbite Copper
Corrensite Corundum Covellite Diaspore Digenite Enargite Epidote Epsomite Feldspar Fluorite
Fornacite Gadolinite Garnet Gatelite Geocronite Germanite Halotrichite Jalpaite Kaolinite Lillianite
Linarite Malachite Marcasite Melonite Meneghinite Mica Millerite Molybdenite Monazite Nickeline
None Not in a structural group Pentlandite Perovskite Polybasite Prehnite Pyrite Pyrochlore Pyroxene Quartz
Rocksalt Rutile Scheelite Serpentine Smectite-vermiculite Sodalite Sphalerite Spinel Stannite Stibnite
Sulphur Tetradymite Tetrahedrite Titanite Tungstite Vesuvianite Vivianite Weberite Wollastonite Wurtzite
Zemannite Zircon

193 IMA Minerals at location:

Acanthite ()*	Actinolite ()*	Aegirine ()*	Aikinite ()*	Alabandite ()*
Albite ()*	Allanite-(Ce) ()*	Allophane ()*	Altaite ()*	Alunite ()*
Analcime ()*	Anatase ()*	Andalusite ()*	Anglesite ()*	Anhydrite ()*
Ankerite ()*	Anthophyllite ()*	Antimony ()*	Arfvedsonite ()*	Arsenic ()*
Arsenopyrite ()*	Augite ()*	Aurichalcite ()*	Autunite ()*	Azurite ()*
Baryte ()*	Bassetite ()*	Bastnäsite-(Ce) ()*	Beidellite ()*	Beryl ()*
Bismuth ()*	Bismuthinite ()*	Bismutite ()*	Bornite ()*	Boulangerite ()*
Briartite ()*	Britholite-(Ce) ()*	Brucite ()*	Buckhornite ()*	Calaverite ()*
Calcite ()*	Calomel ()*	Cassiterite ()*	Celestine ()*	Cerite-(Ce) ()*
Cerussite ()*	Cervelleite ()*	Chalcanthite ()*	Chalcocite ()*	Chalcopyrite ()*
Chlorargyrite ()*	Chrysocolla ()*	Chrysotile ()*	Cinnabar ()*	Clinozoisite ()*
Cobaltite ()*	Coffinite ()*	Coloradoite ()*	Copper ()*	Cordierite ()*
Corrensite ()*	Covellite ()*	Cryolite ()*	Dawsonite ()*	Dickite ()*
Digenite ()*	Diopside ()*	Dolomite ()*	Empressite ()*	Enargite ()*
Enstatite ()*	Epidote ()*	Famatinite ()*	Ferberite ()*	Ferrotellurite ()*
Fizélyite ()*	Fluorbritholite-(Ce) ()*	Fluorite ()*	Freibergite ()*	Fülöppite ()*
Gadolinite-(Y) ()*	Galena ()*	Gearksutite ()*	Gedrite ()*	Geocronite ()*
Germanite ()*	Goethite ()*	Gold ()*	Goslarite ()*	Goyazite ()*
Graphite ()*	Grossular ()*	Halotrichite ()*	Haüyne ()*	Heazlewoodite ()*
Hedenbergite ()*	Hematite ()*	Hessite ()*	Hübnerite ()*	Hydrokenoelsmoreite ()*
Ilmenite ()*	Ilsemannite ()*	Iodargyrite ()*	Jalpaite ()*	Jamesonite ()*
Kaolinite ()*	Keystoneite ()*	Krennerite ()*	Linarite ()*	Magnetite ()*
Magnolite ()*	Malachite ()*	Marcasite ()*	Melonite ()*	Mercury ()*
Miargyrite ()*	Microcline ()*	Millerite ()*	Molybdenite ()*	Monazite-(Ce) ()*
Montmorillonite ()*	Morenosite ()*	Muscovite ()*	Nagyágite ()*	Nickeline ()*
Nontronite ()*	Opal ()*	Orthoclase ()*	Gersdorffite-Pa3 ()*	Paratacamite ()*
Paratellurite ()*	Uranophane-β ()*	Pearceite ()*	Pentlandite ()*	Perbøeite-(Ce) ()*
Petzite ()*	Phlogopite ()*	Piemontite ()*	Polybasite ()*	Polydymite ()*
Posnjakite ()*	Prehnite ()*	Proustite ()*	Pyrargyrite ()*	Pyrite ()*
Pyrope ()*	Pyrrhotite ()*	Quartz ()*	Renierite ()*	Rhodochrosite ()*
Rickardite ()*	Riebeckite ()*	Roscoelite ()*	Rutile ()*	Samarskite-(Y) ()*
Sanidine ()*	Scheelite ()*	Schröckingerite ()*	Siderite ()*	Sillimanite ()*
Silver ()*	Spessartine ()*	Sphalerite ()*	Spinel ()*	Stephanite ()*
Stibnite ()*	Stromeyerite ()*	Stützite ()*	Sulphur ()*	Sylvanite ()*
Tellurantimony ()*	Tellurite ()*	Tellurium ()*	Tennantite-(Fe) ()*	Tetradymite ()*
Tetrahedrite-(Zn) ()*	Thorite ()*	Titanite ()*	Torbernite ()*	Törnebohmite-(Ce) ()*
Tungstite ()*	Ulvöspinel ()*	Uraninite ()*	Uranophane-α ()*	Vesuvianite ()*
Villiaumite ()*	Violarite ()*	Vivianite ()*	Weberite ()*	Weishanite ()*
Wollastonite ()*	Woodhouseite ()*	Zircon ()*

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	Ag₂S	69.3	56.7	15	184478,184485,184487,184491,184501,184502,184507,184508,184523,184822,184835,185083,185171,185202,185257	2793
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			2	184533,185034	3419
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	74.8	45	1	184906	1022
Aikinite ()*	Meneghinite	CuPbBiS₃			4	184594,184620,184822,184831	315
Alabandite ()*	Rocksalt	MnS			1	184989	312
Albite ()*	Feldspar	Na(AlSi₃O₈)			5	184875,184910,184911,184912,184913	8803
Allanite-(Ce) ()*	Allanite Epidote	CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)	65.5	0	7	184827,184829,184875,184885,184886,184894,184918	706
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O	1905	50.2	2	184970,185068	470
Altaite ()*	Rocksalt	PbTe	1905	50.2	23	184494,184495,184510,184594,184595,184628,184677,184696,184701,184703,184704,184705,184714,184779,184806,184811,184835,184879,184918,184970,185047,185226,185231	489
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	65.5	0	1	184918	966
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O			1	185117	1627
Anatase ()*	Not in a structural group	TiO₂			1	185130	2162
Andalusite ()*	Andalusite	Al₂SiO₅			1	184557	1310
Anglesite ()*	Baryte	Pb(SO₄)			2	184508,184823	2734
Anhydrite ()*	Not in a structural group	Ca(SO₄)			3	184822,184832,184878	1588
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			8	184332,184599,184652,184653,184781,184798,184830,184835	3092
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂			1	184765	718
Antimony ()*	Arsenic	Sb	60	49	1	184568	363
Arfvedsonite ()*	Amphibole	NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂			3	184804,184822,184875	295
Arsenic ()*	Arsenic	As	1905	0	0		379
Arsenopyrite ()*	Arsenopyrite	FeAsS			4	184308,184575,184627,184638	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			1	184476	2060
Aurichalcite ()*	None	(Zn,Cu)₅(CO₃)₂(OH)₆			1	184822	919
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O			4	184524,184802,184812,184840	1272
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	69.3	56.7	5	184492,184497,184823,185129,185182	5509
Baryte ()*	Baryte	Ba(SO₄)			10	184403,184411,184481,184772,184848,184982,185083,185139,185140,185257	11547
Bassetite ()*	None	Fe²⁺(UO₂)₂(PO₄)₂(H₂O)₁₀			2	184526,184866	51
Bastnäsite-(Ce) ()*	Bastnäsite	Ce(CO₃)F			2	184804,184827	304
Beidellite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3Al₂(Si,Al)₄O₁₀(OH)₂·nH₂O			4	184305,184332,184970,184982	85
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1449.41	1389.41	10	184295,184296,184537,184545,184758,184910,184913,184915,185169,185170	4286
Bismuth ()*	Arsenic	Bi	60	49	2	184568,185084	1966
Bismuthinite ()*	Stibnite	Bi₂S₃			3	184822,184882,185084	1935
Bismutite ()*	Bismutite	Bi₂O₂(CO₃)			1	185084	716
Bornite ()*	None	Cu₅FeS₄	65	55	7	184610,184628,184763,184822,185129,185132,185162	5516
Boulangerite ()*	None	Pb₅Sb₄S₁₁			1	184704	843
Briartite ()*	Stannite Sphalerite	Cu₂FeGeS₄			1	184822	12
Britholite-(Ce) ()*	Apatite	(Ce,Ca)₅(SiO₄)₃(OH)			2	184804,184875	115
Brucite ()*	Brucite	Mg(OH)₂			1	184768	462
Buckhornite ()*	Buckhornite	(Pb₂BiS₃)(AuTe₂)			1	184831	13
Calaverite ()*	Melonite	AuTe₂	1905	50.2	19	184594,184595,184628,184652,184653,184701,184714,184769,184783,184831,184835,184918,184930,184931,184932,184938,184943,184969,184970	361
Calcite ()*	Calcite	Ca(CO₃)	70.7	0	16	184283,184305,184334,184475,184491,184628,184761,184763,184822,184879,184907,184908,184959,185139,185257,185260	27770
Calomel ()*	None	HgCl	65.5	0	1	184943	91
Cassiterite ()*	Rutile	SnO₂			2	184285,184289	5171
Celestine ()*	Baryte	Sr(SO₄)			4	184822,184832,184878,185139	1252
Cerite-(Ce) ()*	Cerite	(Ce₇Ca₂) Mg(SiO₄)₃(SiO₃OH)₄(OH)₃			4	184875,184885,184886,184894	47
Cerussite ()*	Aragonite	Pb(CO₃)	69.3	56.7	9	184478,184485,184487,184491,184501,184502,184507,184523,184823	4979
Cervelleite ()*	None	Ag₄TeS			1	185202	42
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O			1	184822	925
Chalcocite ()*	None	Cu₂S			5	184497,184610,184839,185162,185232	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1905	50.2	48	184283,184337,184435,184475,184491,184504,184551,184594,184595,184599,184610,184620,184627,184628,184652,184689,184701,184714,184772,184779,184785,184798,184811,184822,184823,184826,184828,184831,184832,184837,184848,184874,184879,184905,184908,184938,184970,185083,185131,185132,185162,185167,185181,185202,185221,185232,185234,185257	27198
Chlorargyrite ()*	Rocksalt	AgCl	69.3	56.7	10	184478,184485,184487,184491,184501,184502,184507,184522,184523,184701	1382
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O			5	184589,184627,184823,185132,185135	3531
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	69.3	56.7	2	184491,184763	951
Cinnabar ()*	None	HgS	65.5	0	0		2600
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			1	184283	1025
Cobaltite ()*	Cobaltite	CoAsS			1	184627	966
Coffinite ()*	Zircon	U(SiO₄)·nH₂O			3	184526,184802,184830	566
Coloradoite ()*	Sphalerite	HgTe	69.3	0	23	184292,184347,184494,184495,184559,184571,184629,184652,184664,184677,184703,184705,184779,184835,184841,184879,184904,184931,184932,184938,184943,185063,185202	169
Copper ()*	Copper	Cu			2	185131,185167	3846
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈			1	184765	1008
Corrensite ()*	Corrensite Clay	(Ca,Na,K)_1-x(Mg,Fe,Al)₉(Si,Al)₈O₂₀(OH)₁₀·nH₂O			1	184547	49
Covellite ()*	Covellite	CuS	69.3	56.7	5	184491,184497,184626,184628,184831	4165
Cryolite ()*	Perovskite	Na₂NaAlF₆			1	184822	50
Dawsonite ()*	None	NaAl(CO₃)(OH)₂	65	55	1	185162	90
Dickite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1905	50.2	3	184332,184348,184970	651
Digenite ()*	Digenite	Cu_1.8S			1	184822	1027
Diopside ()*	Pyroxene	CaMgSi₂O₆			3	184283,184476,184763	4135
Dolomite ()*	None	CaMg(CO₃)₂	69.3	56.7	1	184491	9895
Empressite ()*	None	AgTe	65.5	0	5	184594,184701,184703,184950,185063	43
Enargite ()*	Enargite Wurtzite	Cu₃AsS₄			3	184772,184822,185132	910
Enstatite ()*	Pyroxene	Mg₂Si₂O₆			1	184763	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	65.5	0	5	184804,184826,184827,184875,184918	8173
Famatinite ()*	Stannite Sphalerite	Cu₃SbS₄			1	184337	163
Ferberite ()*	Columbite	Fe²⁺(WO₄)	65.5	0	65	184308,184311,184313,184318,184319,184320,184326,184332,184334,184337,184340,184341,184348,184354,184357,184359,184362,184368,184381,184386,184393,184394,184399,184401,184402,184409,184410,184411,184412,184413,184414,184416,184423,184424,184426,184434,184440,184442,184444,184450,184451,184452,184462,184466,184506,184550,184552,184638,184668,184686,184830,184864,184921,184930,184970,184982,184989,185005,185020,185027,185060,185065,185073,185081,185095	551
Ferrotellurite ()*	None	Fe(Te⁶⁺O₄) (?)	65.5	0	1	184931	1
Fizélyite ()*	Lillianite	Ag₅Pb₁₄Sb₂₁S₄₈			7	184379,184628,184704,184715,184837,185176,185202	54
Fluorbritholite-(Ce) ()*	Apatite	(Ce,Ca)₅(SiO₄)₃F			3	184827,184829,184875	19
Fluorite ()*	Fluorite	CaF₂	70.7	0	31	184504,184677,184770,184772,184781,184783,184785,184789,184798,184802,184804,184822,184826,184827,184828,184829,184830,184831,184832,184848,184859,184864,184871,184875,184878,184882,184900,184905,184908,184918,185005	9617
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂	1905	50.2	4	184668,184828,184970,185129	663
Fülöppite ()*	None	Pb₃Sb₈S₁₅			1	184753	55
Gadolinite-(Y) ()*	Gadolinite	Y₂Fe²⁺Be₂O₂(SiO₄)₂			1	184769	163
Galena ()*	Rocksalt	PbS	74.8	45	62	184305,184426,184475,184478,184485,184487,184489,184491,184492,184501,184502,184505,184507,184508,184516,184519,184523,184526,184527,184550,184571,184585,184594,184595,184599,184608,184626,184630,184652,184653,184668,184677,184701,184703,184704,184714,184761,184772,184781,184785,184789,184798,184811,184822,184823,184828,184830,184831,184832,184848,184864,184879,184900,184906,184908,184970,185005,185049,185129,185133,185171,185257	24243
Gearksutite ()*	None	CaAlF₄(OH)·H₂O			3	184789,184822,184832	68
Gedrite ()*	Amphibole	Mg₂(Mg₃Al₂)(Si₆Al₂)O₂₂(OH)₂			1	184765	178
Geocronite ()*	Geocronite	Pb₁₄Sb₆S₂₃			2	184822,184823	133
Germanite ()*	Germanite Sphalerite	Cu₁₃Fe₂Ge₂S₁₆			2	184822,184823	33
Goethite ()*	Diaspore	FeO(OH)	1905	50.2	2	184931,184970	7437
Gold ()*	Copper	Au	1704.13	46	237	184284,184287,184288,184290,184292,184348,184362,184409,184421,184445,184470,184475,184481,184482,184486,184491,184495,184498,184499,184514,184516,184517,184518,184538,184562,184570,184571,184577,184579,184582,184584,184585,184586,184589,184590,184591,184592,184593,184594,184595,184598,184599,184602,184603,184606,184609,184612,184618,184624,184626,184628,184629,184630,184631,184632,184633,184638,184641,184648,184649,184652,184653,184659,184664,184665,184667,184668,184676,184677,184678,184681,184682,184683,184695,184696,184701,184703,184704,184707,184714,184715,184721,184722,184724,184732,184733,184734,184735,184736,184737,184739,184746,184748,184751,184757,184761,184762,184768,184771,184775,184779,184782,184785,184789,184806,184809,184811,184812,184815,184820,184825,184831,184837,184841,184846,184848,184849,184860,184863,184864,184868,184872,184874,184876,184879,184882,184884,184887,184888,184889,184890,184891,184892,184893,184898,184906,184908,184914,184919,184921,184922,184924,184931,184932,184938,184940,184941,184943,184949,184950,184953,184954,184955,184956,184957,184969,184970,184973,184978,184997,185002,185008,185012,185021,185022,185023,185024,185025,185026,185032,185043,185051,185055,185056,185062,185063,185069,185070,185072,185074,185082,185085,185086,185087,185088,185090,185092,185093,185108,185109,185111,185118,185121,185122,185126,185127,185129,185131,185132,185133,185134,185149,185150,185151,185153,185154,185155,185166,185167,185168,185178,185183,185186,185189,185190,185192,185198,185201,185202,185208,185210,185218,185221,185225,185232,185234,185236,185239,185248,185249,185250,185251,185252,185254,185256,185257,185259	30554
Goslarite ()*	Epsomite	Zn(SO₄)·7H₂O			1	184822	188
Goyazite ()*	Alunite	SrAl₃(PO₄)(PO₃OH)(OH)₆	1905	50.2	4	184305,184332,184552,184970	173
Graphite ()*	None	C			2	184334,184713	2812
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃			1	184283	1544
Halotrichite ()*	Halotrichite	Fe²⁺Al₂(SO₄)₄·22H₂O			2	184963,185261	409
Haüyne ()*	Sodalite Cancrinite-sodalite	Na₃Ca(Si₃Al₃)O₁₂(SO₄)			1	184301	158
Heazlewoodite ()*	None	Ni₃S₂			1	184763	205
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆			1	184283	741
Hematite ()*	Corundum	Fe₂O₃			15	184283,184318,184332,184348,184426,184475,184504,184627,184696,184769,184798,184879,184970,184982,185132	14640
Hessite ()*	None	Ag₂Te	1905	50.2	19	184594,184620,184626,184629,184641,184652,184653,184688,184701,184703,184714,184779,184918,184930,184932,184969,184970,185202,185231	804
Hübnerite ()*	Columbite	Mn²⁺(WO₄)	65.5	0	5	184383,184745,184769,184918,185177	469
Hydrokenoelsmoreite ()*	Pyrochlore	₂W₂O₆(H₂O)			1	184348	57
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	65.5	0	4	184476,184763,184765,184959	5433
Ilsemannite ()*	None	Mo₃O₈·nH₂O (?)			2	184403,184802	123
Iodargyrite ()*	Wurtzite	AgI	65.5	0	2	184701,184918	180
Jalpaite ()*	Jalpaite	Ag₃CuS₂	69.3	56.7	4	184491,184508,184551,185257	116
Jamesonite ()*	None	Pb₄FeSb₆S₁₄			1	184696	784
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			5	184348,184393,184410,184411,184982	5591
Keystoneite ()*	Zemannite	Mg_0.5NiFe³⁺(Te⁴⁺O₃)₃·4H₂O	65.5	0	2	184931,184938	4
Krennerite ()*	None	Au₃AgTe₈	61	57	8	184677,184705,184779,184785,184811,184835,185047,185226	111
Linarite ()*	Linarite	CuPb(SO₄)(OH)₂			2	184823,185129	987
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			5	184476,184552,184689,184763,184765	14899
Magnolite ()*	None	Hg¹⁺₂(Te⁴⁺O₃)	65.5	0	2	184931,184938	3
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	69.3	56.7	7	184295,184492,184537,184627,184823,185129,185182	12537
Marcasite ()*	Marcasite	FeS₂	65.5	0	11	184308,184313,184575,184629,184638,184653,184668,184688,184704,184761,184918	5674
Melonite ()*	Melonite	NiTe₂	69.3	0	22	184347,184458,184494,184561,184626,184628,184632,184652,184653,184677,184688,184705,184714,184722,184835,184924,184927,184931,184932,185047,185063,185120	207
Mercury ()*	None	Hg	65.5	0	8	184627,184664,184696,184841,184931,184938,184943,185121	397
Miargyrite ()*	None	AgSbS₂	1905	50.2	1	184970	300
Microcline ()*	Feldspar	K(AlSi₃O₈)			5	184296,184555,184765,184875,184913	4924
Millerite ()*	Millerite	NiS			1	184627	1066
Molybdenite ()*	Molybdenite	MoS₂	74.8	55	19	184334,184403,184435,184446,184447,184448,184481,184504,184507,184713,184820,184837,184905,184938,184982,184985,185050,185132,185162	5800
Monazite-(Ce) ()*	Monazite	Ce(PO₄)			1	184829	945
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	1905	50.2	2	184820,184970	1508
Morenosite ()*	Epsomite	Ni(SO₄)·7H₂O			1	184627	84
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			27	184296,184332,184475,184481,184626,184638,184652,184653,184696,184758,184765,184769,184772,184785,184820,184830,184832,184864,184875,184879,184910,184911,184912,184913,185081,185131,185152	17380
Nagyágite ()*	None	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃			10	184626,184628,184629,184652,184653,184704,184779,184783,184837,184969	67
Nickeline ()*	Nickeline	NiAs			1	184627	633
Nontronite ()*	Clay Smectite-vermiculite	Na_0.3Fe³⁺₂(Si,Al)₄O₁₀(OH)₂·nH₂O			1	184769	471
Opal ()*	Amorphous	SiO₂·nH₂O			3	184318,184970,184982	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)			3	184555,184822,184830	2349
Gersdorffite-Pa3 ()*	Pyrite	NiAsS	69.3	56.7	1	184491	767
Paratacamite ()*	Atacamite	Cu₃(Cu,Zn)Cl₂(OH)₆			1	184835	158
Paratellurite ()*	Rutile	TeO₂	65.5	0	2	184841,184931	20
Uranophane-β ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O			1	184827	144
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]	69.3	56.7	4	184491,184551,185014,185171	249
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈			2	184627,184689	1512
Perbøeite-(Ce) ()*	Gatelite	(CaCe₃)(Al₃Fe²⁺)(Si₂O₇)(SiO₄)₃O(OH)₂			1	184827	4
Petzite ()*	None	Ag₃AuTe₂	1905	50.2	32	184481,184494,184571,184594,184595,184620,184626,184628,184629,184652,184653,184688,184696,184701,184703,184714,184779,184783,184785,184806,184811,184835,184837,184879,184918,184930,184932,184969,184970,185047,185226,185231	409
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			1	184763	2273
Piemontite ()*	Epidote	Ca₂(Al₂Mn³⁺)[Si₂O₇][SiO₄]O(OH)			1	185161	260
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	1905	50.2	3	184491,184970,185171	716
Polydymite ()*	Spinel	Ni²⁺Ni³⁺₂S₄			1	184627	131
Posnjakite ()*	None	Cu₄(SO₄)(OH)₆·H₂O			1	185129	309
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂			1	184564	1898
Proustite ()*	None	Ag₃AsS₃	69.3	56.7	2	184491,184508	733
Pyrargyrite ()*	None	Ag₃SbS₃	69.3	56.7	7	184491,184508,184596,184641,184652,184822,184969	1425
Pyrite ()*	Pyrite	FeS₂	70.7	0	89	184283,184292,184305,184332,184334,184426,184475,184480,184481,184483,184491,184507,184526,184542,184571,184575,184582,184585,184594,184595,184599,184607,184620,184626,184627,184628,184629,184638,184639,184641,184652,184653,184668,184677,184688,184696,184701,184714,184761,184772,184779,184781,184785,184789,184798,184802,184811,184815,184820,184826,184827,184828,184830,184831,184832,184835,184837,184848,184864,184874,184875,184879,184882,184900,184908,184924,184930,184931,184938,184982,185049,185050,185082,185129,185131,185132,185133,185134,185139,185162,185166,185167,185181,185186,185202,185221,185232,185234,185257	39462
Pyrope ()*	Garnet	Mg₃Al₂(SiO₄)₃			1	184763	341
Pyrrhotite ()*	Nickeline	Fe₇S₈	65.5	0	4	184627,184689,184822,184928	9056
Quartz ()*	Quartz	SiO₂	74.8	57	117	184283,184292,184296,184305,184313,184318,184326,184332,184334,184340,184348,184357,184359,184410,184411,184426,184452,184475,184481,184483,184491,184507,184508,184510,184552,184575,184582,184585,184594,184595,184599,184626,184627,184628,184638,184652,184653,184664,184668,184677,184688,184696,184701,184704,184705,184714,184758,184761,184765,184772,184779,184781,184783,184785,184789,184798,184802,184811,184815,184820,184822,184823,184827,184828,184829,184830,184831,184832,184835,184837,184848,184864,184871,184874,184879,184882,184900,184906,184907,184908,184910,184911,184912,184913,184918,184921,184924,184930,184931,184938,184982,185005,185020,185047,185049,185050,185063,185121,185129,185131,185132,185133,185134,185136,185139,185162,185167,185169,185170,185181,185186,185202,185221,185226,185232,185234,185257	61156
Renierite ()*	Sphalerite Germanite	(Cu¹⁺,Zn)₁₁Fe₄(Ge⁴⁺,As⁵⁺)₂S₁₆			1	184823	37
Rhodochrosite ()*	Calcite	Mn(CO₃)			1	184652	1711
Rickardite ()*	None	Cu_3-xTe₂	65.5	0	5	184595,184783,184841,184943,185111	52
Riebeckite ()*	Amphibole	Na₂(Fe²⁺₃Fe³⁺₂)Si₈O₂₂(OH)₂			2	184703,184822	375
Roscoelite ()*	Mica	KV³⁺₂(Si₃Al)O₁₀(OH)₂	65.5	0	11	184403,184480,184481,184483,184668,184714,184783,184864,184918,184931,184938	253
Rutile ()*	Rutile	TiO₂			1	184765	5614
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	65	55	1	185162	353
Sanidine ()*	Feldspar	K(AlSi₃O₈)			1	185260	598
Scheelite ()*	Scheelite	Ca(WO₄)			11	184348,184381,184399,184426,184435,184450,184543,184596,184626,184686,185065	4894
Schröckingerite ()*	None	NaCa₃(UO₂)(SO₄)(CO₃)₃F·10H₂O			1	184585	128
Siderite ()*	Calcite	Fe(CO₃)	69.3	56.7	7	184491,184701,184802,184962,185131,185171,185257	6417
Sillimanite ()*	Not in a structural group	Al₂SiO₅			1	184765	1516
Silver ()*	Copper	Ag	69.3	50.2	69	184290,184474,184475,184477,184478,184485,184486,184487,184491,184492,184495,184499,184500,184501,184502,184505,184507,184508,184511,184512,184513,184514,184517,184518,184519,184520,184521,184523,184571,184594,184606,184612,184617,184632,184665,184667,184678,184695,184724,184738,184739,184757,184823,184848,184864,184879,184931,184940,184941,184949,184958,184973,184978,185021,185026,185055,185108,185118,185129,185133,185136,185153,185154,185155,185168,185171,185221,185257,185259	5186
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃			3	184910,184911,184912	1214
Sphalerite ()*	Sphalerite	ZnS	70.7	0	49	184313,184337,184475,184478,184485,184487,184491,184492,184501,184502,184507,184508,184519,184523,184527,184571,184585,184595,184599,184626,184627,184652,184653,184668,184696,184701,184703,184704,184714,184761,184772,184798,184802,184811,184822,184830,184831,184837,184848,184874,184879,184905,184908,184918,184930,185005,185129,185232,185257	21482
Spinel ()*	Spinel	MgAl₂O₄			2	184476,184765	1934
Stephanite ()*	None	Ag₅SbS₄	69.3	56.7	2	184491,185129	586
Stibnite ()*	Stibnite	Sb₂S₃	65.5	0	4	184510,184753,184931,185172	3418
Stromeyerite ()*	None	CuAgS	69.3	56.7	5	184337,184491,184637,184640,185129	332
Stützite ()*	None	Ag_5-xTe₃ (x = 0.24-0.36)			6	184292,184347,184626,184701,184703,184779	92
Sulphur ()*	Sulphur	S			1	184822	2045
Sylvanite ()*	Melonite	AgAuTe₄	69.3	0	46	184292,184347,184362,184409,184424,184480,184481,184494,184571,184585,184594,184595,184626,184632,184638,184639,184652,184653,184664,184668,184677,184696,184701,184705,184714,184779,184783,184785,184811,184828,184833,184835,184841,184879,184919,184921,184924,184930,184931,184932,184938,184943,184950,185047,185139,185231	337
Tellurantimony ()*	Tetradymite	Sb₂Te₃			8	184292,184624,184628,184704,184865,185137,185138,185139	29
Tellurite ()*	None	TeO₂	65.5	0	6	184292,184626,184835,184931,184943,185111	52
Tellurium ()*	None	Te	65.5	0	18	184292,184554,184594,184628,184652,184677,184701,184703,184705,184811,184828,184833,184835,184923,184924,184931,184938,185111	190
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	60	49	7	184568,184772,184823,184828,184831,185129,185257	1803
Tetradymite ()*	Tetradymite	Bi₂Te₂S	74.8	45	9	184292,184594,184620,184701,184785,184831,184882,184906,184908	510
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1905	50.2	15	184337,184348,184491,184492,184599,184652,184696,184714,184798,184831,184848,184874,184970,185070,185133	5317
Thorite ()*	Zircon	Th(SiO₄)			1	184830	1006
Titanite ()*	Titanite	CaTi(SiO₄)O			2	184763,185130	4899
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O			7	184529,184537,184634,184798,184839,184840,184859	1059
Törnebohmite-(Ce) ()*	Fornacite	Ce₂Al(SiO₄)₂(OH)			3	184804,184827,184875	23
Tungstite ()*	Tungstite	WO₃·H₂O			1	184401	118
Ulvöspinel ()*	Spinel	Fe²⁺₂TiO₄			1	184763	120
Uraninite ()*	Fluorite	UO₂	69.3	56.7	22	184489,184491,184492,184495,184508,184526,184529,184582,184585,184634,184706,184713,184798,184802,184804,184827,184829,184830,184832,184839,184859,184875	2718
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O			2	184528,184827	890
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀			1	184283	1395
Villiaumite ()*	Rocksalt	NaF			1	184871	31
Violarite ()*	Spinel	FeNi₂S₄			1	184627	380
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O			1	184547	636
Weberite ()*	Weberite	Na₂MgAlF₇			1	184822	13
Weishanite ()*	None	(Au,Ag,Hg)	65.5	0	1	184931	3
Wollastonite ()*	Wollastonite	CaSiO₃			1	184283	1247
Woodhouseite ()*	Alunite	CaAl₃(SO₄)(PO₄)(OH)₆			1	184464	62
Zircon ()*	Zircon	Zr(SiO₄)			1	184765	5251

58 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-U-Th-Pb-02102_206_238	1414	1414	1414	206_238	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02102_207_206	1653	1653	1653	207_206	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02102_207_235	1512	1512	1512	207_235	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02103_206_238	1353	1353	1353	206_238	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02103_207_206	1646	1646	1646	207_206	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02103_207_235	1471	1471	1471	207_235	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02104_206_238	1179	1179	1179	206_238	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02104_207_206	1629	1629	1629	207_206	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02104_207_235	1349	1349	1349	207_235	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02105_206_238	935	935	935	206_238	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02105_207_206	1591	1591	1591	207_206	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02105_207_235	1154	1154	1154	207_235	age of intrusion	zircon		Zircon			110604	Walker Ranch, Boulder County Tungsten District, Boulder Co., Colorado, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
NAVDAT-32623	69.3	56.7	63±6.3				32623				278552	Grand Island, Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32624	69.3	56.7	63±6.3				32624				278552	Grand Island, Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32600	69.3	56.7	63±6.3				32600				110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32607	69.3	56.7	63±6.3				32607				110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32608	69.3	56.7	63±6.3				32608				110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32648	69.3	56.7	63±6.3				32648				110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32649	69.3	56.7	63±6.3				32649				110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32692	67.8	50.2	59±8.8				32692				110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
USGS-Rb-Sr-04162	1449.41	1389.41	1419.41±30	Rb-Sr	age of intrusion	whole rock					110284	Mona No. 9 Claim, Crystal Mountain, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
NAVDAT-32752	60	50	55±5				32752				110540	Unknown Gold Occurrence (MRDS - 10017618), Gold Hill District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32740	59	49	54±5				32740				110618	White Rock, Gold Hill District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32731	63	45	54±9				32731				109822	Albion (Comanche; Maine; Washington; Penobscot; Monarch Occurrence), Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32734	74.8	61.2	68±6.8				32734				109822	Albion (Comanche; Maine; Washington; Penobscot; Monarch Occurrence), Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-128208	65	55	60±5				128208				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-2631	67.4	65.2	66.3±1.1				2631				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-2632	67.4	65.2	66.3±1.1				2632				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-2633	67.4	65.2	66.3±1.1				2633				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-2634	67.4	65.2	66.3±1.1				2634				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-2635	67.4	65.2	66.3±1.1				2635				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-2694	70.7	57.9	64.3±6.4				2694				110453	Snowy Range Mine, Lake Albion, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
Hg-00080	65.5	0		?-?					Calomel, Coloradoite, Magnolite, Mercury	Hg	24262	Magnolia District, Boulder Co., Colorado, USA	Kelly and Goddard (1969)	GSAM109_237
Mo-00187	65.5	0		?-?					Molybdenite	Mo	24262	Magnolia District, Boulder Co., Colorado, USA	Kelly and Goddard (1969)	GSAM109_237
NAVDAT-128206	65	55	60±5				128206				110350	Pandora No. 1 & 4 Lode Claims, Magnolia District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32650	68	58	63±5				32650				110167	Jasper Tunnel Occurrence, Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32698	67.8	50.2	59±8.8				32698				110167	Jasper Tunnel Occurrence, Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32602	69.3	56.7	63±6.3				32602				110569	Unknown Silver - Gold Occurrence (MRDS - 10091285), Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32622	69.3	56.7	63±6.3				32622				110569	Unknown Silver - Gold Occurrence (MRDS - 10091285), Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32694	67.8	50.2	59±8.8				32694				110569	Unknown Silver - Gold Occurrence (MRDS - 10091285), Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32701	69.3	56.7	63±6.3				32701				110569	Unknown Silver - Gold Occurrence (MRDS - 10091285), Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32702	69.3	56.7	63±6.3				32702				110569	Unknown Silver - Gold Occurrence (MRDS - 10091285), Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32780	68	58	63±5				32780				110569	Unknown Silver - Gold Occurrence (MRDS - 10091285), Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32630	68	58	63±5				32630				110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
USGS-Rb-Sr-05809	1905	1645	1775±130	Rb-Sr		whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05810	1881.16	1704.4	1792.78±88.38	Rb-Sr		whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05812	1905	1645	1775±130	Rb-Sr		whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05813	1881.16	1704.4	1792.78±88.38	Rb-Sr		whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05814	1514.98	1460.54	1487.76±27.22	Rb-Sr	age of metamorphic crystallization	whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05815	1514.98	1460.54	1487.76±27.22	Rb-Sr	age of metamorphic crystallization	whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05816	1514.98	1460.54	1487.76±27.22	Rb-Sr	age of metamorphic crystallization	whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05817	1514.98	1460.54	1487.76±27.22	Rb-Sr	age of metamorphic crystallization	whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05819	1514.98	1460.54	1487.76±27.22	Rb-Sr	age of metamorphic crystallization	whole rock					110601	Virginia Shaft, Nederland District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04130	1704.13	1624.13	1664.13±40	Rb-Sr	age of intrusion	whole rock					110054	G. W. Horton Mill Site Occurrence (Church Placer; Clear Water Placer; Ravens View; Horseshoe Placer; Hubbard Placer), Sugarloaf District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
NAVDAT-128174	56	46	51±5				128174				110360	Phillips (Meadow Lark; Lee S.; Sur No. 209; Storm Occurrence), Sugarloaf District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
USGS-Rb-Sr-04041	54	54	54	Rb-Sr	age of intrusion	biotite					110360	Phillips (Meadow Lark; Lee S.; Sur No. 209; Storm Occurrence), Sugarloaf District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
NAVDAT-16628	65	55	60±5				16628				110280	Modoc, Ward District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32719	61	57	59±2				32719				110316	New Rival - Black Rose, Ward District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT

Sample	Source Locality	Reference URL
R050480	Boulder Co., Colorado, USA	https://rruff.info/R050480
R070504	Boulder Co., Colorado, USA	https://rruff.info/R070504
R050657	Jamestown, Jamestown District, Boulder Co., Colorado, USA	https://rruff.info/R050657

All locality data graciously provided by mindat.org

All age data...