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.

Locality Name:
Summit Co., Colorado, USA

Oldest recorded age at locality: 1805
Youngest recorded age at locality: 2.6

mindat Locality ID: 22147
mindat URL: http://www.mindat.org/loc-22147.html

Tectonic Settings:

Total number of sublocalities beneath "Summit Co., Colorado, USA": 431
Total number of bottom-level sublocalities: 397

Number of Child Localities: 43
Child Localities:
American Gulch Placer
Argentine District
Argentine Pass
Blue River Area
Breckenridge District
Buffalo Placers
Chalk Mountain
Frey Placer Claims
Frisco
Galena Gulch Placers
Georgia Gulch Placer
Gore Range
Green Mountain District
Hail Stone Mine
Heeney
Humbug Hill Placer
Illinois Gulch Placers
Keystone Area
King Soloman
Kokomo-Tenmile Area
Mark Twain Mine
Monte Cristo Area
Montezuma Area
Montezuma District (Snake River District)
North Rock Creek Area
North Star Mountain
Peru District
Quandary Peak
Rich Gulch Placers
Skookum Mine
Soda Gulch Placers
Swan River District
Swan Valley Placers
Swandyke Area
Toledo Tunnel
Unknown Fluorine-Fluorite Occurrence (MRDS - 10018529)
Unknown Gold (MRDS - 10143400)
Unknown Gold (MRDS - 10167725)
Unknown Gold Occurrence (MRDS - 10018541)
Unknown Mine (MRDS - 10167370)
Upper Blue River District
Wheeler Junction
Wild Irishman (Altoona; Herman Occurrence) Montezuma Area

Latitude: 39°34'23"N
Longitude: 106°3'36"W
Decimal Degree (lat, lon): 39.573055555556,-106.06

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	Allophane	Alunite	Amorphous	Amphibole	Andalusite	Apatite	Aragonite	Arsenic	Arsenopyrite
Baryte	Beryl	Bournonite	Calcite	Chalcanthite	Chalcopyrite	Clay	Clinozoisite	Columbite	Copper
Corundum	Covellite	Cubanite	Diaspore	Epidote	Epsomite	Feldspar	Fluorite	Garnet	Geocronite
Gypsum	Jalpaite	Kaolinite	Kobellite	Lillianite	Malachite	Marcasite	Melanterite	Meneghinite	Mica
Molybdenite	Natrolite	Nickeline	None	Not in a structural group	Pavonite	Perovskite	Polybasite	Pyrite	Pyrophyllite
Pyroxene	Quartz	Rhodonite	Rocksalt	Rutile	Scheelite	Skutterudite	Sphalerite	Spinel	Stannite
Stibnite	Sulphur	Talc	Tetradymite	Tetrahedrite	Titanite	Topaz	Tridymite	Tungstite	Wollastonite
Wurtzite	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 Br C Ca Cl Co Cu F Fe H Ir K Mg Mn Mo Na O P Pb Pt S Sb Si Te Ti V W Zn Zr

Elements from minerals reported directly at this locality: Bi S Te

Structural Groups for minerals in this locality:
Acanthite Allophane Alunite Amorphous Amphibole Andalusite Apatite Aragonite Arsenic Arsenopyrite
Baryte Beryl Bournonite Calcite Chalcanthite Chalcopyrite Clay Clinozoisite Columbite Copper
Corundum Covellite Cubanite Diaspore Epidote Epsomite Feldspar Fluorite Garnet Geocronite
Gypsum Jalpaite Kaolinite Kobellite Lillianite Malachite Marcasite Melanterite Meneghinite Mica
Molybdenite Natrolite Nickeline None Not in a structural group Pavonite Perovskite Polybasite Pyrite Pyrophyllite
Pyroxene Quartz Rhodonite Rocksalt Rutile Scheelite Skutterudite Sphalerite Spinel Stannite
Stibnite Sulphur Talc Tetradymite Tetrahedrite Titanite Topaz Tridymite Tungstite Wollastonite
Wurtzite Zircon

123 IMA Minerals at location:

Acanthite ()*	Aikinite ()*	Alabandite ()*	Albite ()*	Almandine ()*
Andalusite ()*	Andradite ()*	Anglesite ()*	Anhydrite ()*	Ankerite ()*
Arsenopyrite ()*	Augite ()*	Azurite ()*	Baryte ()*	Benjaminite ()*
Berryite ()*	Beryl ()*	Beudantite ()*	Birnessite ()*	Bismite ()*
Bismuth ()*	Bismuthinite ()*	Bornite ()*	Boulangerite ()*	Bournonite ()*
Bromargyrite ()*	Calcite ()*	Cerussite ()*	Chalcanthite ()*	Chalcopyrite ()*
Chlorargyrite ()*	Chrysocolla ()*	Copper ()*	Covellite ()*	Cubanite ()*
Cuprite ()*	Cuprobismutite ()*	Diadochite ()*	Diaspore ()*	Dickite ()*
Dolomite ()*	Epidote ()*	Epsomite ()*	Eskimoite ()*	Ferrimolybdite ()*
Fluorite ()*	Freibergite ()*	Galena ()*	Galenobismutite ()*	Geocronite ()*
Goethite ()*	Gold ()*	Goslarite ()*	Graphite ()*	Gypsum ()*
Hammarite ()*	Hematite ()*	Hemimorphite ()*	Hinsdalite ()*	Hübnerite ()*
Idaite ()*	Iridium ()*	Jalpaite ()*	Jarosite ()*	Jordanite ()*
Joséite-B ()*	Kaolinite ()*	Lead ()*	Lillianite ()*	Magnetite ()*
Malachite ()*	Marcasite ()*	Matildite ()*	Melanterite ()*	Miargyrite ()*
Microcline ()*	Molybdenite ()*	Muscovite ()*	Opal ()*	Orthoclase ()*
Ourayite ()*	Pavonite ()*	Pearceite ()*	Platinum ()*	Polybasite ()*
Proustite ()*	Pyrargyrite ()*	Pyrite ()*	Pyrolusite ()*	Pyromorphite ()*
Pyrophyllite ()*	Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*	Rhodonite ()*
Sanidine ()*	Scheelite ()*	Scolecite ()*	Scorodite ()*	Semseyite ()*
Siderite ()*	Sillimanite ()*	Silver ()*	Skutterudite ()*	Smithsonite ()*
Sphalerite ()*	Stephanite ()*	Stromeyerite ()*	Sulphur ()*	Talc ()*
Tennantite-(Fe) ()*	Tetradymite ()*	Tetrahedrite-(Zn) ()*	Titanite ()*	Topaz ()*
Tremolite ()*	Tridymite ()*	Tungstite ()*	Vanadinite ()*	Wittichenite ()*
Wollastonite ()*	Wulfenite ()*	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			14	197583,197674,197895,197896,197906,197931,197937,197939,197951,197956,197958,197959,197962,197972	2793
Aikinite ()*	Meneghinite	CuPbBiS₃			1	197952	315
Alabandite ()*	Rocksalt	MnS			2	197605,197962	312
Albite ()*	Feldspar	Na(AlSi₃O₈)			1	197626	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	66	2.6	4	197778,197782,197802,197809	2353
Andalusite ()*	Andalusite	Al₂SiO₅			1	197952	1310
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	66	2.6	7	197634,197638,197662,197676,197782,197795,197822	1534
Anglesite ()*	Baryte	Pb(SO₄)	66	2.6	6	197641,197652,197720,197767,197931,197965	2734
Anhydrite ()*	Not in a structural group	Ca(SO₄)			1	197910	1588
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			11	197608,197633,197711,197714,197740,197896,197920,197952,197957,197991,197994	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	66	2.6	5	197761,197775,197867,197916,197935	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			1	197626	2060
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			5	197606,197620,197626,197649,197952	5509
Baryte ()*	Baryte	Ba(SO₄)	66	2.6	20	197598,197600,197606,197607,197612,197623,197721,197740,197767,197814,197900,197916,197922,197931,197932,197939,197952,197961,197991,198009	11547
Benjaminite ()*	Pavonite	Ag₃Bi₇S₁₂			1	197952	45
Berryite ()*	Meneghinite	Cu₃Ag₂Pb₃Bi₇S₁₆			1	197952	50
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	66	2.6	2	197791,197882	4286
Beudantite ()*	Alunite	PbFe³⁺₃(AsO₄)(SO₄)(OH)₆			3	197599,197922,197947	413
Birnessite ()*	None	(Na,Ca,K)_0.6(Mn⁴⁺,Mn³⁺)₂O₄·1.5H₂O			1	197952	178
Bismite ()*	None	Bi₂O₃			1	197952	214
Bismuth ()*	Arsenic	Bi			1	197662	1966
Bismuthinite ()*	Stibnite	Bi₂S₃			6	197662,197669,197686,197876,197951,197952	1935
Bornite ()*	None	Cu₅FeS₄			2	197880,197890	5516
Boulangerite ()*	None	Pb₅Sb₄S₁₁			1	197890	843
Bournonite ()*	Bournonite	CuPbSbS₃			1	197890	1089
Bromargyrite ()*	Rocksalt	AgBr			1	197890	227
Calcite ()*	Calcite	Ca(CO₃)	66	2.6	16	197605,197607,197633,197649,197663,197667,197676,197682,197697,197740,197767,197795,197811,197812,197814,197952	27770
Cerussite ()*	Aragonite	Pb(CO₃)	66	2.6	15	197599,197626,197649,197652,197687,197697,197704,197705,197706,197707,197720,197723,197740,197767,197952	4979
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O			4	197582,197606,197935,197952	925
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	66	2.6	39	197581,197582,197584,197600,197606,197608,197616,197623,197649,197669,197686,197714,197754,197767,197791,197805,197876,197880,197882,197883,197886,197890,197902,197915,197916,197923,197930,197931,197935,197938,197940,197945,197951,197952,197956,197968,197972,197991,198009	27198
Chlorargyrite ()*	Rocksalt	AgCl	66	2.6	5	197599,197626,197674,197767,197951	1382
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O			4	197626,197629,197649,197952	3531
Copper ()*	Copper	Cu			2	197582,197985	3846
Covellite ()*	Covellite	CuS			1	197607	4165
Cubanite ()*	Cubanite Wurtzite	CuFe₂S₃			1	197883	802
Cuprite ()*	Not in a structural group	Cu₂O			1	197620	2970
Cuprobismutite ()*	None	Cu₈AgBi₁₃S₂₄			1	197952	43
Diadochite ()*	Amorphous	Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O			1	197961	81
Diaspore ()*	Diaspore	AlO(OH)			1	197952	481
Dickite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			1	197982	651
Dolomite ()*	None	CaMg(CO₃)₂			3	197882,197910,197962	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	66	2.6	4	197634,197676,197795,197952	8173
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O			1	197952	484
Eskimoite ()*	Lillianite	Ag₇Pb₁₀Bi₁₅S₃₆			1	197951	20
Ferrimolybdite ()*	None	Fe³⁺₂(Mo⁶⁺O₄)₃·7H₂O	66	2.6	2	197793,197885	345
Fluorite ()*	Fluorite	CaF₂			3	197581,197669,197750	9617
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂			2	197582,197923	663
Galena ()*	Rocksalt	PbS	66	2.6	78	197581,197582,197584,197589,197598,197599,197600,197605,197606,197607,197608,197612,197623,197633,197641,197644,197646,197651,197652,197669,197670,197682,197686,197689,197697,197704,197705,197706,197707,197708,197711,197714,197720,197723,197740,197754,197761,197762,197763,197767,197805,197811,197812,197813,197814,197867,197882,197883,197886,197896,197900,197902,197915,197916,197917,197920,197928,197930,197931,197933,197935,197937,197938,197939,197940,197945,197947,197950,197951,197952,197957,197962,197967,197976,197985,197991,197994,198009	24243
Galenobismutite ()*	Kobellite	PbBi₂S₄			2	197951,197952	192
Geocronite ()*	Geocronite	Pb₁₄Sb₆S₂₃			1	197916	133
Goethite ()*	Diaspore	FeO(OH)			2	197626,197942	7437
Gold ()*	Copper	Au	66	2.6	33	197589,197600,197618,197620,197626,197631,197652,197663,197664,197666,197667,197668,197669,197670,197672,197673,197675,197682,197684,197686,197689,197692,197693,197708,197740,197791,197876,197880,197886,197896,197946,197986,197999	30554
Goslarite ()*	Epsomite	Zn(SO₄)·7H₂O			1	197952	188
Graphite ()*	None	C			1	197952	2812
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			5	197626,197651,197662,197663,197910	6890
Hammarite ()*	Meneghinite	Cu₂Pb₂Bi₄S₉			1	197952	43
Hematite ()*	Corundum	Fe₂O₃	66	2.6	8	197626,197660,197676,197729,197795,197886,197952,197972	14640
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O			1	197952	1689
Hinsdalite ()*	Alunite	PbAl₃(SO₄)(PO₄)(OH)₆			3	197954,197965,197970	82
Hübnerite ()*	Columbite	Mn²⁺(WO₄)			2	197880,197883	469
Idaite ()*	Stannite Sphalerite	Cu₃FeS₄			1	197883	142
Iridium ()*	Copper	Ir			2	197673,197676	162
Jalpaite ()*	Jalpaite	Ag₃CuS₂			2	197607,197890	116
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆			4	197626,197652,197931,197966	2228
Jordanite ()*	Geocronite	Pb₁₄As₆S₂₃			1	198009	105
Joséite-B ()*	Tetradymite	Bi₄Te₂S	1805	2.6	0		86
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			2	197626,197669	5591
Lead ()*	Copper	Pb			1	197626	192
Lillianite ()*	Lillianite	Pb_3-2xAg_xBi_2+xS₆			2	197910,197952	128
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	66	2.6	6	197660,197717,197729,197795,197886,197952	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			6	197606,197620,197626,197663,197717,197952	12537
Marcasite ()*	Marcasite	FeS₂	66	2.6	4	197686,197767,197814,197916	5674
Matildite ()*	None	AgBiS₂			3	197605,197918,197951	252
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O			2	197952,197954	915
Miargyrite ()*	None	AgSbS₂			2	197952,197959	300
Microcline ()*	Feldspar	K(AlSi₃O₈)			2	197626,197952	4924
Molybdenite ()*	Molybdenite	MoS₂	66	2.6	9	197616,197764,197767,197793,197795,197880,197883,197885,197910	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	66	2.6	6	197606,197626,197682,197689,197767,197952	17380
Opal ()*	Amorphous	SiO₂·nH₂O			1	197930	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	66	2.6	5	197626,197710,197767,197952,197973	2349
Ourayite ()*	Lillianite	Ag₃Pb₄Bi₅S₁₃			1	197951	24
Pavonite ()*	Pavonite	AgBi₃S₅			2	197890,197970	72
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]	66	2.6	10	197609,197782,197895,197906,197922,197930,197931,197937,197952,197960	249
Platinum ()*	Copper	Pt			1	197673	485
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]			6	197895,197906,197931,197951,197952,197957	716
Proustite ()*	None	Ag₃AsS₃			3	197896,197931,197958	733
Pyrargyrite ()*	None	Ag₃SbS₃			10	197754,197895,197896,197906,197931,197937,197951,197952,197957,197959	1425
Pyrite ()*	Pyrite	FeS₂	66	2.6	74	197582,197584,197589,197598,197599,197600,197606,197608,197612,197616,197623,197626,197633,197644,197646,197649,197651,197659,197660,197669,197670,197682,197686,197689,197692,197697,197708,197711,197714,197721,197723,197729,197740,197754,197761,197767,197775,197782,197789,197791,197795,197796,197805,197811,197812,197814,197815,197822,197867,197871,197876,197882,197883,197886,197890,197896,197902,197910,197916,197920,197931,197935,197950,197951,197956,197961,197962,197963,197968,197970,197986,197991,197994,197999	39462
Pyrolusite ()*	Rutile	MnO₂	66	2.6	3	197622,197767,197952	3106
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			3	197902,197932,197945	1725
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂			1	197952	771
Pyrrhotite ()*	Nickeline	Fe₇S₈	66	2.6	6	197767,197775,197789,197815,197867,197873	9056
Quartz ()*	Quartz	SiO₂	66	2.6	53	197581,197582,197584,197589,197599,197600,197607,197608,197612,197626,197652,197660,197669,197674,197676,197682,197686,197711,197714,197729,197744,197754,197761,197762,197767,197791,197803,197814,197876,197883,197886,197890,197896,197900,197906,197910,197915,197916,197920,197922,197930,197931,197935,197945,197947,197950,197951,197952,197961,197972,197982,197991,198009	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)			9	197605,197669,197755,197895,197906,197910,197931,197959,197962	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	66	2.6	1	197814	969
Sanidine ()*	Feldspar	K(AlSi₃O₈)	66	2.6	2	197744,197767	598
Scheelite ()*	Scheelite	Ca(WO₄)			2	197880,197883	4894
Scolecite ()*	Natrolite	Ca(Si₃Al₂)O₁₀·3H₂O			1	197751	390
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O			1	197761	1153
Semseyite ()*	None	Pb₉Sb₈S₂₁			2	197890,197916	165
Siderite ()*	Calcite	Fe(CO₃)	66	2.6	9	197644,197697,197721,197723,197740,197767,197896,197972,198009	6417
Sillimanite ()*	Not in a structural group	Al₂SiO₅			2	197600,197952	1516
Silver ()*	Copper	Ag	66	2.6	20	197589,197610,197618,197626,197674,197689,197693,197708,197740,197775,197806,197810,197811,197812,197814,197896,197900,197931,197952,197957	5186
Skutterudite ()*	Skutterudite Perovskite	CoAs₃			1	197956	531
Smithsonite ()*	Calcite	Zn(CO₃)	66	2.6	9	197697,197723,197740,197775,197801,197807,197810,197814,197952	2473
Sphalerite ()*	Sphalerite	ZnS	66	2.6	71	197581,197582,197584,197589,197598,197599,197600,197605,197608,197616,197623,197633,197644,197646,197651,197659,197669,197670,197682,197684,197686,197689,197697,197711,197714,197721,197723,197740,197754,197761,197762,197763,197767,197775,197796,197805,197811,197812,197813,197814,197867,197871,197882,197883,197886,197896,197900,197902,197910,197915,197916,197917,197920,197931,197935,197937,197938,197939,197945,197947,197950,197951,197952,197954,197957,197967,197968,197970,197972,197991,197994	21482
Stephanite ()*	None	Ag₅SbS₄			4	197581,197931,197937,197952	586
Stromeyerite ()*	None	CuAgS			5	197607,197765,197890,197952,197953	332
Sulphur ()*	Sulphur	S			4	197605,197626,197687,197952	2045
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			1	197952	3337
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃			4	197930,197945,197952,198009	1803
Tetradymite ()*	Tetradymite	Bi₂Te₂S	66	2.6	1	197791	510
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			23	197582,197598,197600,197606,197740,197754,197762,197895,197896,197900,197902,197906,197916,197930,197931,197935,197938,197945,197950,197952,197965,197991,198009	5317
Titanite ()*	Titanite	CaTi(SiO₄)O			1	197626	4899
Topaz ()*	Topaz	Al₂SiO₄F₂			1	197744	1476
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂			1	197952	2562
Tridymite ()*	Tridymite	SiO₂	66	2.6	1	197803	458
Tungstite ()*	Tungstite	WO₃·H₂O			1	197883	118
Vanadinite ()*	Apatite	Pb₅(VO₄)₃Cl			1	197626	605
Wittichenite ()*	None	Cu₃BiS₃			1	197883	297
Wollastonite ()*	Wollastonite	CaSiO₃	66	2.6	1	197767	1247
Wulfenite ()*	Scheelite	PbMoO₄			1	197626	1655
Zircon ()*	Zircon	Zr(SiO₄)			1	197626	5251

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Num	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
NAVDAT-19711	1805	1795	1800±5	19711	120285	King Soloman, Summit Co., Colorado, USA		NAVDAT	NAVDAT
NAVDAT-19712	1805	1795	1800±5	19712	120285	King Soloman, Summit Co., Colorado, USA		NAVDAT	NAVDAT
sedznpb-00495	66	2.6	Tertiary		50133	Kokomo-Tenmile Area, Summit Co., Colorado, USA	Tenmile	Singer et al. (2009)	USGSOFR2009-1252
NAVDAT-19713	1805	1795	1800±5	19713	120439	Unknown Mine (MRDS - 10167370), Summit Co., Colorado, USA		NAVDAT	NAVDAT
NAVDAT-19714	1805	1795	1800±5	19714	120439	Unknown Mine (MRDS - 10167370), Summit Co., Colorado, USA		NAVDAT	NAVDAT

Sample	Source Locality	Reference URL
R050140	Big Four Mine, Heeney, Green Mountain District, Summit Co., Colorado, USA	https://rruff.info/R050140

All locality data graciously provided by mindat.org

All age data...