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:
Railroad District, Elko Co., Nevada, USA

Oldest recorded age at locality: 40.7
Youngest recorded age at locality: 33.3

mindat Locality ID: 36694
mindat URL: http://www.mindat.org/loc-36694.html

Tectonic Settings:

Total number of sublocalities beneath "Railroad District, Elko Co., Nevada, USA": 44
Total number of bottom-level sublocalities: 42

Number of Child Localities: 22
Child Localities:
Alladin Group
Bald Mountain Chief Mine
Blue Belle Mine
Copper Belle Mine (Phillipine Mine; Copper King Mine; Copper Queen Mine)
Dark Star Gold Deposit (Cord Ranch Project Area; Trout Creek-South Bullion Deposit)
Dixie Creek Ti Occurrence
Hecla Mine
Helen M Group
Hoffman Mine
Humboldt Claim (Highland Silver Mining Co. Property; Broadhead And Co.)
Jack Creek Mine
Lady Of The Lake Mine
Last Chance Mine (Empire City)
Lee (William S. Lee)
Pine Mountain Barite Mine
Pine Valley Deposit
Railroad Copper-Gold Property (Bullion Copper-Gold Project; Polymetallic Prospect; Nevada Bunker Hill Mines; Aladdin Claim; Blue Sky Claim; Tripoli Claim; Webfoot Claim; Mahogany Claim; Standing Elk Claim; Hoffman Claim; Mounted Ledge Claim; Bullion Claim
Railroad Gold Deposit (Bullion)
Sun Mine (Silver King Mine; Sunshine)
Sylvania Mine
Trout Creek/South Bullion Deposit
Unnamed Mines

Latitude: 40°30'51"N
Longitude: 116°'33"W
Decimal Degree (lat, lon): 40.514166666667,-116.00916666667

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.

Adelite	Allophane	Alunite	Amorphous	Amphibole	Apatite	Aragonite	Arsenopyrite	Baryte	Beryllonite
Calcite	Chalcanthite	Chalcopyrite	Chlorite	Clay	Copper	Corundum	Covellite	Diaspore	Epidote
Fluorite	Garnet	Kaolinite	Malachite	Marcasite	Mica	Molybdenite	Nickeline	None	Not in a structural group
Pentlandite	Phenakite	Pyrite	Pyroxene	Quartz	Rocksalt	Scheelite	Smectite-vermiculite	Sphalerite	Spinel
Stibnite	Tetrahedrite	Turquoise	Wollastonite

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 Cl Cu F Fe H K Mg Mo Na Ni O P Pb S Sb Si Ti W Zn

Elements from minerals reported directly at this locality: Ag Al Ca Cu Fe H K Mg Mo Na Ni O S Sb Si Zn

Structural Groups for minerals in this locality:
Adelite Allophane Alunite Amorphous Amphibole Apatite Aragonite Arsenopyrite Baryte Beryllonite
Calcite Chalcanthite Chalcopyrite Chlorite Clay Copper Corundum Covellite Diaspore Epidote
Fluorite Garnet Kaolinite Malachite Marcasite Mica Molybdenite Nickeline None Not in a structural group
Pentlandite Phenakite Pyrite Pyroxene Quartz Rocksalt Scheelite Smectite-vermiculite Sphalerite Spinel
Stibnite Tetrahedrite Turquoise Wollastonite

56 IMA Minerals at location:

Andradite ()*	Anglesite ()*	Arsenopyrite ()*	Azurite ()*	Baryte ()*
Beryllonite ()*	Beudantite ()*	Bornite ()*	Calcite ()*	Cerussite ()*
Chalcanthite ()*	Chalcocite ()*	Chalcopyrite ()*	Chlorargyrite ()*	Chrysocolla ()*
Clinochlore ()*	Copper ()*	Covellite ()*	Cuprite ()*	Diopside ()*
Dolomite ()*	Duftite ()*	Fluorite ()*	Galena ()*	Goethite ()*
Gold ()*	Hematite ()*	Hemimorphite ()*	Ilmenite ()*	Kaolinite ()*
Lead ()*	Magnetite ()*	Malachite ()*	Marcasite ()*	Molybdenite ()*
Montmorillonite ()*	Muscovite ()*	Opal ()*	Pentlandite ()*	Phlogopite ()*
Pyrargyrite ()*	Pyrite ()*	Pyromorphite ()*	Pyrrhotite ()*	Quartz ()*
Scheelite ()*	Silver ()*	Sphalerite ()*	Stibnite ()*	Tenorite ()*
Tetrahedrite-(Zn) ()*	Tremolite ()*	Turquoise ()*	Willemite ()*	Wollastonite ()*
Zoisite ()*

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
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	40.7	33.3	0		1534
Anglesite ()*	Baryte	Pb(SO₄)			1	236382	2734
Arsenopyrite ()*	Arsenopyrite	FeAsS			2	236382,236413	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			5	236387,236391,236394,236408,236411	5509
Baryte ()*	Baryte	Ba(SO₄)			10	236370,236391,236393,236394,236406,236407,236408,236410,236411,236412	11547
Beryllonite ()*	Beryllonite	NaBe(PO₄)			1	236391	47
Beudantite ()*	Alunite	PbFe³⁺₃(AsO₄)(SO₄)(OH)₆			1	236391	413
Bornite ()*	None	Cu₅FeS₄	40.7	33.3	6	236370,236381,236382,236391,236394,236408	5516
Calcite ()*	Calcite	Ca(CO₃)			19	236370,236377,236378,236386,236387,236391,236393,236395,236398,236399,236401,236404,236405,236406,236408,236410,236411,236412,236413	27770
Cerussite ()*	Aragonite	Pb(CO₃)			4	236387,236391,236401,236408	4979
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O	40.7	33.3	2	236370,236408	925
Chalcocite ()*	None	Cu₂S	40.7	33.3	4	236370,236381,236391,236408	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	40.7	33.3	9	236370,236381,236382,236386,236387,236391,236394,236408,236413	27198
Chlorargyrite ()*	Rocksalt	AgCl			4	236370,236391,236395,236408	1382
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O			4	236387,236391,236394,236411	3531
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	40.7	33.3	0		1756
Copper ()*	Copper	Cu	40.7	33.3	7	236381,236386,236387,236393,236394,236395,236405	3846
Covellite ()*	Covellite	CuS	40.7	33.3	0		4165
Cuprite ()*	Not in a structural group	Cu₂O			1	236391	2970
Diopside ()*	Pyroxene	CaMgSi₂O₆	40.7	33.3	2	236381,236386	4135
Dolomite ()*	None	CaMg(CO₃)₂			1	236406	9895
Duftite ()*	Adelite	PbCu(AsO₄)(OH)			2	236391,236408	220
Fluorite ()*	Fluorite	CaF₂			4	236370,236391,236393,236408	9617
Galena ()*	Rocksalt	PbS	40.7	33.3	10	236370,236381,236387,236391,236394,236401,236403,236405,236408,236413	24243
Goethite ()*	Diaspore	FeO(OH)			1	236403	7437
Gold ()*	Copper	Au	40.7	33.3	2	236381,236412	30554
Hematite ()*	Corundum	Fe₂O₃			4	236393,236410,236411,236412	14640
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O			3	236387,236394,236410	1689
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	236397	5433
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			1	236391	5591
Lead ()*	Copper	Pb			1	236387	192
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	236397	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			8	236370,236387,236391,236394,236400,236401,236408,236411	12537
Marcasite ()*	Marcasite	FeS₂	40.7	33.3	0		5674
Molybdenite ()*	Molybdenite	MoS₂	40.7	33.3	0		5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	40.7	33.3	0		1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	236394	17380
Opal ()*	Amorphous	SiO₂·nH₂O	40.7	33.3	0		2994
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	40.7	33.3	0		1512
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	40.7	33.3	0		2273
Pyrargyrite ()*	None	Ag₃SbS₃	40.7	33.3	0		1425
Pyrite ()*	Pyrite	FeS₂	40.7	33.3	9	236370,236380,236381,236382,236387,236391,236394,236408,236413	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			3	236387,236403,236408	1725
Pyrrhotite ()*	Nickeline	Fe₇S₈	40.7	33.3	2	236381,236391	9056
Quartz ()*	Quartz	SiO₂	40.7	33.3	19	236370,236377,236378,236381,236386,236391,236393,236394,236395,236398,236399,236401,236404,236405,236406,236408,236410,236411,236413	61156
Scheelite ()*	Scheelite	Ca(WO₄)			5	236370,236380,236382,236387,236408	4894
Silver ()*	Copper	Ag	40.7	33.3	0		5186
Sphalerite ()*	Sphalerite	ZnS	40.7	33.3	6	236370,236381,236387,236391,236408,236413	21482
Stibnite ()*	Stibnite	Sb₂S₃			1	236402	3418
Tenorite ()*	None	CuO	40.7	33.3	5	236381,236387,236391,236410,236411	1101
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	40.7	33.3	2	236370,236408	5317
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	40.7	33.3	3	236381,236387,236408	2562
Turquoise ()*	Turquoise	CuAl₆(PO₄)₄(OH)₈·4H₂O			1	236393	484
Willemite ()*	Phenakite	Zn₂SiO₄	40.7	33.3	0		303
Wollastonite ()*	Wollastonite	CaSiO₃			3	236370,236380,236408	1247
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	40.7	33.3	1	236381	1025

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	NAVDAT-117347	40.7	33.3	37±3.7					117347						41511	Delmas Mine (Sweepstakes Mine; Delmas SW Mine; Como Mine), Nevada Bunker Hill Mines, Alladin Group, Railroad District, Elko Co., Nevada, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...