Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

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.

Allanite	Allophane	Alluaudite	Amorphous	Amphibole	Andalusite	Apatite	Aragonite	Autunite	Baryte
Beryl	Bismutite	Calcite	Chalcanthite	Chalcopyrite	Chlorite	Clay	Clinozoisite	Columbite	Compreignacite
Copper	Corundum	Diamond	Diaspore	Epidote	Feldspar	Fluorite	Garnet	Graftonite	Gypsum
Iron	Lazulite	Leucophosphite	Malachite	Marcasite	Meta-autunite	Mica	Molybdenite	Monazite	Nickeline
None	Not in a structural group	Olivine	Pentlandite	Perovskite	Phosphosiderite	Phosphuranylite	Pseudobrookite	Pyrite	Pyroxene
Quartz	Rocksalt	Rutile	Scheelite	Serpentine	Smectite-vermiculite	Sphalerite	Spinel	Staurolite	Stibnite
Talc	Titanite	Topaz	Tourmaline	Tridymite	Triplite	Vesuvianite	Vivianite	Wollastonite	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: Al Au B Ba Be Bi C Ca Ce Cr Cu F Fe H K Li Mg Mn Mo Na Nb Ni O P Pb S Si Ta Th Ti U V W Y Zn Zr

Elements from minerals reported directly at this locality: Bi O

Structural Groups for minerals in this locality:
Allanite Allophane Alluaudite Amorphous Amphibole Andalusite Apatite Aragonite Autunite Baryte
Beryl Bismutite Calcite Chalcanthite Chalcopyrite Chlorite Clay Clinozoisite Columbite Compreignacite
Copper Corundum Diamond Diaspore Epidote Feldspar Fluorite Garnet Graftonite Gypsum
Iron Lazulite Leucophosphite Malachite Marcasite Meta-autunite Mica Molybdenite Monazite Nickeline
None Not in a structural group Olivine Pentlandite Perovskite Phosphosiderite Phosphuranylite Pseudobrookite Pyrite Pyroxene
Quartz Rocksalt Rutile Scheelite Serpentine Smectite-vermiculite Sphalerite Spinel Staurolite Stibnite
Talc Titanite Topaz Tourmaline Tridymite Triplite Vesuvianite Vivianite Wollastonite Zircon

132 IMA Minerals at location:

Actinolite ()*	Aegirine ()*	Albite ()*	Allanite-(Ce) ()*	Allophane ()*
Alluaudite ()*	Almandine ()*	Amblygonite ()*	Andalusite ()*	Anhydrite ()*
Anthophyllite ()*	Antigorite ()*	Aragonite ()*	Autunite ()*	Azurite ()*
Baryte ()*	Bertrandite ()*	Beryl ()*	Beusite ()*	Bismite ()*
Bismuthinite ()*	Bismutite ()*	Bornite ()*	Calcite ()*	Carnotite ()*
Chalcanthite ()*	Chalcopyrite ()*	Chromite ()*	Chrysoberyl ()*	Chrysotile ()*
Clinochlore ()*	Clinozoisite ()*	Coesite ()*	Coffinite ()*	Columbite-(Mn) ()*
Compreignacite ()*	Copper ()*	Cordierite ()*	Corundum ()*	Cummingtonite ()*
Diamond ()*	Diopside ()*	Dolomite ()*	Enstatite ()*	Epidote ()*
Ferrimolybdite ()*	Ferrisicklerite ()*	Ferro-hornblende ()*	Fersmite ()*	Fluorapatite ()*
Fluorite ()*	Gahnite ()*	Galena ()*	Goethite ()*	Gold ()*
Graftonite ()*	Graphite ()*	Grossular ()*	Gypsum ()*	Hematite ()*
Hercynite ()*	Heterosite ()*	Hydroxylapatite ()*	Ilmenite ()*	Iron ()*
Kyanite ()*	Lazulite ()*	Leucophosphite ()*	Lithiophilite ()*	Lizardite ()*
Magnetite ()*	Malachite ()*	Manganite ()*	Marcasite ()*	Meta-autunite ()*
Microcline ()*	Molybdenite ()*	Monazite-(Ce) ()*	Montmorillonite ()*	Muscovite ()*
Nickel ()*	Nontronite ()*	Omphacite ()*	Opal ()*	Uranophane-β ()*
Pentlandite ()*	Periclase ()*	Perovskite ()*	Phlogopite ()*	Phosphosiderite ()*
Phosphuranylite ()*	Powellite ()*	Pseudobrookite ()*	Purpurite ()*	Pyrite ()*
Pyrope ()*	Pyrrhotite ()*	Quartz ()*	Richterite ()*	Rutile ()*
Samarskite-(Y) ()*	Sanidine ()*	Scheelite ()*	Schorl ()*	Scorzalite ()*
Sicklerite ()*	Siderite ()*	Sillimanite ()*	Spessartine ()*	Sphalerite ()*
Spinel ()*	Spodumene ()*	Staurolite ()*	Talc ()*	Tantalite-(Fe) ()*
Thorianite ()*	Titanite ()*	Topaz ()*	Torbernite ()*	Tridymite ()*
Triphylite ()*	Triplite ()*	Trolleite ()*	Uraninite ()*	Uranophane-α ()*
Vandendriesscheite ()*	Vesuvianite ()*	Vivianite ()*	Wollastonite ()*	Xenotime-(Y) ()*
Zircon ()*	Zwieselite ()*

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(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			1	191968	3419
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆			1	192002	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)			15	191784,191786,191787,191794,191796,191797,191798,191814,191815,191817,191819,191832,191835,191843,191875	8803
Allanite-(Ce) ()*	Allanite Epidote	CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)			1	191795	706
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O			1	191984	470
Alluaudite ()*	Alluaudite	NaMnFe³⁺₂(PO₄)₃			5	191784,191795,191834,191974,192030	94
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃			7	191755,191793,191798,191955,191958,191959,192033	2353
Amblygonite ()*	None	LiAl(PO₄)F			3	191791,191817,191830	244
Andalusite ()*	Andalusite	Al₂SiO₅			8	191834,191840,191857,191866,191923,191924,191962,191963	1310
Anhydrite ()*	Not in a structural group	Ca(SO₄)			1	191899	1588
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂			1	191968	718
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			2	192013,192022	708
Aragonite ()*	Aragonite	Ca(CO₃)			10	191762,191764,191768,191774,191863,191882,191954,191956,191987,192013	3250
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O			7	191784,191787,191797,191815,191827,191834,191916	1272
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			4	191853,191971,192033,192073	5509
Baryte ()*	Baryte	Ba(SO₄)			3	191746,192002,192013	11547
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂			1	191815	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1458.93	1272.15	48	191777,191778,191779,191782,191783,191784,191786,191787,191788,191791,191792,191794,191795,191796,191797,191798,191800,191802,191804,191806,191808,191810,191811,191813,191814,191815,191816,191817,191818,191819,191820,191822,191823,191824,191826,191827,191828,191829,191830,191831,191832,191834,191835,191843,191893,191938,191940,191972	4286
Beusite ()*	Graftonite	Mn²⁺Mn²⁺₂(PO₄)₂			2	191795,191834	39
Bismite ()*	None	Bi₂O₃	1802.86	26.5	0		214
Bismuthinite ()*	Stibnite	Bi₂S₃			3	191753,191794,191815	1935
Bismutite ()*	Bismutite	Bi₂O₂(CO₃)			1	191815	716
Bornite ()*	None	Cu₅FeS₄			2	191758,191846	5516
Calcite ()*	Calcite	Ca(CO₃)			15	191762,191768,191774,191864,191875,191899,191953,191954,191984,191987,192002,192013,192017,192022,192061	27770
Carnotite ()*	None	K₂(UO₂)₂(VO₄)₂·3H₂O			1	191890	1184
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O			1	191853	925
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			19	191849,191876,191886,191900,191903,191904,191906,191915,191917,191922,191925,191938,191942,191944,191968,191969,191970,191978,191989	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄			2	192002,192013	3902
Chrysoberyl ()*	Olivine	BeAl₂O₄			4	191783,191787,191815,191843	321
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			1	192013	951
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈			3	191840,191923,191924	1756
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			2	191751,191966	1025
Coesite ()*	Not in a structural group	SiO₂			1	192002	77
Coffinite ()*	Zircon	U(SiO₄)·nH₂O			1	191968	566
Columbite-(Mn) ()*	Columbite	Mn²⁺Nb₂O₆			1	191787	289
Compreignacite ()*	Compreignacite	K₂(UO₂)₆O₄(OH)₆·7H₂O			1	191833	27
Copper ()*	Copper	Cu			1	191979	3846
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈			3	191866,191946,191963	1008
Corundum ()*	Corundum	Al₂O₃			1	192002	1797
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂			1	191968	327
Diamond ()*	Diamond	C			10	192003,192004,192005,192006,192009,192010,192011,192013,192014,192015	697
Diopside ()*	Pyroxene	CaMgSi₂O₆			3	192002,192011,192013	4135
Dolomite ()*	None	CaMg(CO₃)₂			1	192002	9895
Enstatite ()*	Pyroxene	Mg₂Si₂O₆			2	192002,192013	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			5	191754,191896,191917,191929,191966	8173
Ferrimolybdite ()*	None	Fe³⁺₂(Mo⁶⁺O₄)₃·7H₂O			1	191846	345
Ferrisicklerite ()*	Olivine	Li_1-x(Fe³⁺,Mn²⁺)(PO₄)			4	191784,191795,191815,191834	108
Ferro-hornblende ()*	Amphibole	Ca₂(Fe²⁺₄Al)(Si₇Al)O₂₂(OH)₂	1704.13	1624.13	1	191878	271
Fersmite ()*	Columbite	CaNb₂O₆			1	191787	83
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			5	191784,191786,191794,191796,191832	2740
Fluorite ()*	Fluorite	CaF₂			6	191746,191758,191815,191817,191968,191972	9617
Gahnite ()*	Spinel	ZnAl₂O₄	1439.41	1399.41	1	191859	445
Galena ()*	Rocksalt	PbS			10	191900,191904,191915,191938,191939,191942,191943,191965,191968,191998	24243
Goethite ()*	Diaspore	FeO(OH)			1	191968	7437
Gold ()*	Copper	Au			4	191876,191925,191938,191941	30554
Graftonite ()*	Graftonite	Fe²⁺Fe²⁺₂(PO₄)₂			4	191784,191795,191834,191974	107
Graphite ()*	None	C			4	191896,192002,192014,192029	2812
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃			1	191955	1544
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			4	191892,191898,191899,191953	6890
Hematite ()*	Corundum	Fe₂O₃			13	191793,191843,191865,191881,191896,191917,191925,191929,191943,191968,191976,192002,192018	14640
Hercynite ()*	Spinel	Fe²⁺Al₂O₄			1	191946	407
Heterosite ()*	Olivine	Fe³⁺(PO₄)			4	191795,191797,191834,192030	204
Hydroxylapatite ()*	Apatite	Ca₅(PO₄)₃OH			4	191784,191795,191796,191834	367
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			3	192002,192011,192013	5433
Iron ()*	Iron	Fe			1	192002	1089
Kyanite ()*	Not in a structural group	Al₂OSiO₄			1	192002	1507
Lazulite ()*	Lazulite	MgAl₂(PO₄)₂(OH)₂			1	191868	232
Leucophosphite ()*	Leucophosphite	KFe³⁺₂(PO₄)₂(OH)·2H₂O			1	191784	110
Lithiophilite ()*	Olivine	LiMn²⁺(PO₄)			2	191796,191815	155
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			1	192013	359
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			4	191843,191968,191969,192002	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1410.67	1310.67	4	191758,191846,191853,191917	12537
Manganite ()*	Rutile	Mn³⁺O(OH)			1	191956	770
Marcasite ()*	Marcasite	FeS₂			6	191949,191950,191951,191952,191968,192077	5674
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O			2	191776,191834	388
Microcline ()*	Feldspar	K(AlSi₃O₈)			16	191747,191782,191784,191785,191786,191792,191794,191795,191797,191798,191814,191815,191819,191835,191843,191940	4924
Molybdenite ()*	Molybdenite	MoS₂	1458.93	1272.15	6	191753,191754,191776,191846,191968,191969	5800
Monazite-(Ce) ()*	Monazite	Ce(PO₄)			1	192015	945
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O			2	191917,191929	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1704.13	1346.46	29	191783,191784,191786,191787,191792,191793,191794,191797,191798,191800,191808,191814,191815,191818,191819,191820,191822,191823,191824,191827,191828,191829,191835,191843,191846,191878,191938,191939,191940	17380
Nickel ()*	Copper	Ni			1	192002	57
Nontronite ()*	Clay Smectite-vermiculite	Na_0.3Fe³⁺₂(Si,Al)₄O₁₀(OH)₂·nH₂O			1	191984	471
Omphacite ()*	Pyroxene	(Ca,Na)(Mg,Fe,Al)Si₂O₆			1	192002	229
Opal ()*	Amorphous	SiO₂·nH₂O			2	191767,191984	2994
Uranophane-β ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O			1	191943	144
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈			1	192002	1512
Periclase ()*	Rocksalt	MgO			1	192002	114
Perovskite ()*	Perovskite	CaTiO₃			2	192002,192013	495
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			4	191860,191968,192002,192013	2273
Phosphosiderite ()*	Phosphosiderite	Fe³⁺(PO₄)·2H₂O			1	191784	182
Phosphuranylite ()*	Phosphuranylite	KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄·8H₂O			1	191834	182
Powellite ()*	Scheelite	Ca(MoO₄)			6	191754,192020,192023,192026,192028,192029	494
Pseudobrookite ()*	Pseudobrookite	(Fe³⁺₂Ti)O₅			1	191747	164
Purpurite ()*	Olivine	Mn³⁺(PO₄)			8	191776,191784,191786,191795,191797,191815,191834,191974	80
Pyrite ()*	Pyrite	FeS₂			25	191815,191849,191876,191900,191901,191902,191903,191904,191905,191906,191907,191909,191911,191914,191915,191917,191929,191938,191942,191949,191950,191951,191952,191968,192002	39462
Pyrope ()*	Garnet	Mg₃Al₂(SiO₄)₃			3	192002,192012,192013	341
Pyrrhotite ()*	Nickeline	Fe₇S₈			5	191849,191853,191894,191968,192002	9056
Quartz ()*	Quartz	SiO₂			45	191747,191750,191753,191766,191776,191783,191784,191785,191786,191787,191794,191795,191797,191798,191807,191814,191815,191817,191819,191822,191827,191832,191835,191840,191843,191848,191853,191868,191875,191895,191896,191917,191922,191925,191929,191938,191940,191942,191954,191968,191976,191984,192002,192019,192074	61156
Richterite ()*	Amphibole	Na(NaCa)Mg₅Si₈O₂₂(OH)₂			1	192002	148
Rutile ()*	Rutile	TiO₂			1	192002	5614
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈			1	191827	353
Sanidine ()*	Feldspar	K(AlSi₃O₈)			2	191984,192002	598
Scheelite ()*	Scheelite	Ca(WO₄)	1704.13	1624.13	13	191752,191807,191821,191880,191917,191925,191929,192002,192020,192023,192026,192028,192029	4894
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1704.13	1624.13	5	191748,191766,191832,191836,191878	2705
Scorzalite ()*	Lazulite	Fe²⁺Al₂(PO₄)₂(OH)₂			1	191868	60
Sicklerite ()*	Olivine	LiMn²⁺(PO₄)			2	191815,191974	66
Siderite ()*	Calcite	Fe(CO₃)			1	191968	6417
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1704.13	1624.13	14	191748,191840,191843,191866,191868,191878,191923,191924,191946,191957,191962,191963,191981,192033	1516
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃			1	191843	1214
Sphalerite ()*	Sphalerite	ZnS			7	191876,191900,191904,191915,191965,191968,191969	21482
Spinel ()*	Spinel	MgAl₂O₄			2	192002,192013	1934
Spodumene ()*	Pyroxene	LiAlSi₂O₆			3	191784,191786,191817	688
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)			6	191748,191861,191866,191917,191920,191947	978
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			1	192002	3337
Tantalite-(Fe) ()*	Columbite	Fe²⁺Ta₂O₆			2	191780,191784	99
Thorianite ()*	Fluorite	ThO₂			1	191834	236
Titanite ()*	Titanite	CaTi(SiO₄)O			3	191761,191875,192002	4899
Topaz ()*	Topaz	Al₂SiO₄F₂			3	191832,191972,191984	1476
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O			5	191784,191797,191798,191815,191879	1059
Tridymite ()*	Tridymite	SiO₂			1	191984	458
Triphylite ()*	Olivine	LiFe²⁺(PO₄)			5	191784,191795,191810,191815,191834	313
Triplite ()*	Triplite	Mn²⁺₂(PO₄)F			8	191780,191784,191785,191795,191796,191799,191832,191974	233
Trolleite ()*	None	Al₄(PO₄)₃(OH)₃			1	191868	16
Uraninite ()*	Fluorite	UO₂			12	191784,191792,191797,191810,191815,191834,191900,191901,191908,191916,191968,191998	2718
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O			6	191798,191834,191900,191916,191938,191943	890
Vandendriesscheite ()*	None	Pb_1.6(UO₂)₁₀O₆(OH)₁₁·11H₂O			1	191834	52
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀			2	192013,192023	1395
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O			3	191784,191795,191834	636
Wollastonite ()*	Wollastonite	CaSiO₃			1	192002	1247
Xenotime-(Y) ()*	Zircon	Y(PO₄)			1	192015	939
Zircon ()*	Zircon	Zr(SiO₄)			3	191833,191875,192002	5251
Zwieselite ()*	Triplite	Fe²⁺₂(PO₄)F			1	191834	47

17 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	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-04180	1312.15	1272.15	1292.15±20	Rb-Sr		whole rock			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04181	1312.15	1272.15	1292.15±20	Rb-Sr		biotite			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04182	1386.46	1346.46	1366.46±20	Rb-Sr		muscovite		Muscovite	115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04183	1386.46	1346.46	1366.46±20	Rb-Sr		microcline		Microcline	115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04184	1386.46	1346.46	1366.46±20	Rb-Sr		plagioclase			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04185	1380.67	1340.67	1360.67±20	Rb-Sr	age of intrusion	plagioclase			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04186	1380.67	1340.67	1360.67±20	Rb-Sr	age of intrusion	microcline		Microcline	115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04187	1458.93	1418.93	1438.93±20	Rb-Sr	age of intrusion	muscovite		Muscovite	115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04188	1458.93	1418.93	1438.93±20	Rb-Sr	age of intrusion	biotite			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04116	1440.04	1340.04	1390.04±50	Rb-Sr	age of metamorphic crystallization	whole rock			115500	H E & M No. 9 Occurrence, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04144	1410.25	1350.25	1380.25±30	Rb-Sr	age of intrusion	whole rock			115482	Davis Nickel Prospect, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04170	1439.41	1399.41	1419.41±20	Rb-Sr	age of intrusion	whole rock			134587	Highway 34 Roadcut, Estes Park, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04119	1704.13	1624.13	1664.13±40	Rb-Sr	age of intrusion	whole rock			115455	Ball Scheelite Mine, Horsetooth Mountain Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
NAVDAT-3774	27.5	26.5	27±0.5			sanidine	3774	Sanidine	115510	Iron Mountain, Larimer Co., Colorado, USA	NAVDAT	NAVDAT
USGS-Rb-Sr-04137	1410.67	1310.67	1360.67±50	Rb-Sr	minimum age of intrusion	biotite			115536	Mint Quarry, Masonville District, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04321	1802.86	1642.86	1722.86±80	Rb-Sr	age of intrusion	microcline		Microcline	115540	Mt. Olympus Mine (Mt. Olympus No. 2), Poudre Park Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04322	1802.86	1642.86	1722.86±80	Rb-Sr	age of intrusion	plagioclase			115540	Mt. Olympus Mine (Mt. Olympus No. 2), Poudre Park Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...