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:
Comstock District, Storey Co., Nevada, USA

Oldest recorded age at locality: 14.1
Youngest recorded age at locality: 13.1

mindat Locality ID: 3909
mindat URL: http://www.mindat.org/loc-3909.html

Tectonic Settings:

Total number of sublocalities beneath "Comstock District, Storey Co., Nevada, USA": 53
Total number of bottom-level sublocalities: 46

Number of Child Localities: 25
Child Localities:
American Flat
Andes Mine
C And C Mine
Cedar Ravine Tunnel
Confidence Mine
Crown Point Mine
Empire Mine
Flowery Lode
Geiger Grade
Gold Hill
Golden Winney Mine
Imperial Mine
Justice Mine
Kentuck Mine
Little Gold Hill
Lucerne Mine-pit
Occidental Lode
Overman Mine
Sierra Nevada Mine
Six Mile Canyon
South Comstock Mine
South End Group
South End Shaft
Virginia City
Wheeler Monument

Latitude: 39°17'35"N
Longitude: 119°38'42"W
Decimal Degree (lat, lon): 39.293055555556,-119.645

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	Allargentum	Allophane	Alunite	Amorphous	Amphibole	Analcime	Apatite	Arsenic	Arsenolite
Arsenopyrite	Baryte	Beryl	Calcite	Chalcanthite	Chalcopyrite	Clay	Clinozoisite	Copiapite	Copper
Corundum	Covellite	Cristobalite	Cubanite	Diaspore	Digenite	Epidote	Epsomite	Feldspar	Gypsum
Halotrichite	Hexahydrite	Jalpaite	Kaolinite	Malachite	Melanterite	Mica	Molybdenite	Natrolite	Nickeline
None	Not in a structural group	Polybasite	Pyrite	Pyrophyllite	Quartz	Rocksalt	Rutile	Scheelite	Smectite-vermiculite
Sphalerite	Spinel	Stibnite	Tetrahedrite	Thomsonite	Uytenbogaardtite	Vivianite

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 Bi C Ca Cl Cu Fe H Hg K Mg Mn Mo Na O P Pb S Sb Se Si Ti Zn

Elements from minerals reported directly at this locality: Ag Al As Ca Cl Cu Fe H K Mg Na O P Pb S Si Ti Zn

Structural Groups for minerals in this locality:
Acanthite Allargentum Allophane Alunite Amorphous Amphibole Analcime Apatite Arsenic Arsenolite
Arsenopyrite Baryte Beryl Calcite Chalcanthite Chalcopyrite Clay Clinozoisite Copiapite Copper
Corundum Covellite Cristobalite Cubanite Diaspore Digenite Epidote Epsomite Feldspar Gypsum
Halotrichite Hexahydrite Jalpaite Kaolinite Malachite Melanterite Mica Molybdenite Natrolite Nickeline
None Not in a structural group Polybasite Pyrite Pyrophyllite Quartz Rocksalt Rutile Scheelite Smectite-vermiculite
Sphalerite Spinel Stibnite Tetrahedrite Thomsonite Uytenbogaardtite Vivianite

86 IMA Minerals at location:

Acanthite ()*	Actinolite ()*	Aguilarite ()*	Albite ()*	Allophane ()*
Alunite ()*	Alunogen ()*	Anatase ()*	Anglesite ()*	Arsenic ()*
Arsenolite ()*	Arsenopyrite ()*	Aurorite ()*	Bornite ()*	Calcite ()*
Celadonite ()*	Chalcanthite ()*	Chalcocite ()*	Chalcopyrite ()*	Chlorargyrite ()*
Copiapite ()*	Copper ()*	Cordierite ()*	Cosalite ()*	Covellite ()*
Cristobalite ()*	Diaspore ()*	Dickite ()*	Digenite ()*	Dyscrasite ()*
Epidote ()*	Epsomite ()*	Galena ()*	Goethite ()*	Gold ()*
Goslarite ()*	Gypsum ()*	Halotrichite ()*	Hematite ()*	Hexahydrite ()*
Ilmenite ()*	Ilsemannite ()*	Jalpaite ()*	Jarosite ()*	Kaolinite ()*
Kolymite ()*	Magnesite ()*	Magnetite ()*	Malachite ()*	Melanterite ()*
Miargyrite ()*	Molybdenite ()*	Montmorillonite ()*	Moschellandsbergite ()*	Muscovite ()*
Natroalunite ()*	Opal ()*	Pearceite ()*	Pentahydrite ()*	Pickeringite ()*
Polybasite ()*	Powellite ()*	Proustite ()*	Pyrargyrite ()*	Pyrite ()*
Pyrolusite ()*	Pyromorphite ()*	Pyrophyllite ()*	Pyrrhotite ()*	Quartz ()*
Rhodochrosite ()*	Rutile ()*	Scolecite ()*	Silver ()*	Sphalerite ()*
Stephanite ()*	Sternbergite ()*	Stibarsen ()*	Stibnite ()*	Stromeyerite ()*
Tennantite-(Fe) ()*	Tetrahedrite-(Zn) ()*	Thomsonite-Ca ()*	Uytenbogaardtite ()*	Vivianite ()*
Wairakite ()*

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	14.1	13.1	18	240983,240984,240987,240997,240998,240999,241013,241020,241021,241022,241024,241025,241026,241027,241028,241029,241030,241031	2793
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	14.1	13.1	0		3419
Aguilarite ()*	Acanthite	Ag₄SeS	14.1	13.1	1	241020	87
Albite ()*	Feldspar	Na(AlSi₃O₈)	14.1	13.1	0		8803
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O	14.1	13.1	0		470
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	13.7	13.7	2	240993,241011	966
Alunogen ()*	Not in a structural group	Al₂(SO₄)₃(H₂O)₁₂·5H₂O	14.1	13.1	0		272
Anatase ()*	Not in a structural group	TiO₂	14.1	13.1	0		2162
Anglesite ()*	Baryte	Pb(SO₄)	13.7	13.7	1	240983	2734
Arsenic ()*	Arsenic	As	14.1	13.1	1	241029	379
Arsenolite ()*	Arsenolite	As₂O₃	14.1	13.1	1	241029	231
Arsenopyrite ()*	Arsenopyrite	FeAsS	14.1	13.1	0		9052
Aurorite ()*	None	Mn²⁺Mn⁴⁺₃O₇·3H₂O	14.1	13.1	1	241030	22
Bornite ()*	None	Cu₅FeS₄	13.7	13.7	1	240989	5516
Calcite ()*	Calcite	Ca(CO₃)	14.1	13.1	9	240983,240989,240995,240998,241009,241011,241015,241024,241034	27770
Celadonite ()*	Mica Clay	KMgFe³⁺Si₄O₁₀(OH)₂	13.7	13.7	2	240995,241009	309
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O	14.1	13.1	0		925
Chalcocite ()*	None	Cu₂S	14.1	13.1	2	241022,241027	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	14.1	13.1	10	240983,240984,240989,241009,241020,241022,241027,241029,241030,241031	27198
Chlorargyrite ()*	Rocksalt	AgCl	14.1	13.1	2	240996,241024	1382
Copiapite ()*	Copiapite	Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O	14.1	13.1	0		382
Copper ()*	Copper	Cu	14.1	13.1	0		3846
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	13.7	13.7	1	241018	1008
Cosalite ()*	None	Pb₂Bi₂S₅	14.1	13.1	1	241020	344
Covellite ()*	Covellite	CuS	14.1	13.1	4	240983,240989,241020,241027	4165
Cristobalite ()*	Cristobalite	SiO₂	14.1	13.1	0		453
Diaspore ()*	Diaspore	AlO(OH)	14.1	13.1	0		481
Dickite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	14.1	13.1	0		651
Digenite ()*	Digenite	Cu_1.8S	13.7	13.7	1	240989	1027
Dyscrasite ()*	Allargentum	Ag_3+xSb_1-x (x ≈ 0.2)	14.1	13.1	1	241020	180
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	14.1	13.1	0		8173
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	14.1	13.1	0		484
Galena ()*	Rocksalt	PbS	14.1	13.1	12	240983,240984,240989,240995,240998,241020,241022,241025,241027,241029,241030,241031	24243
Goethite ()*	Diaspore	FeO(OH)	13.7	13.7	3	240995,240998,241009	7437
Gold ()*	Copper	Au	13.7	13.7	23	240983,240984,240987,240989,240995,240998,240999,241009,241012,241013,241017,241020,241021,241022,241024,241025,241026,241027,241028,241029,241031,241032,241033	30554
Goslarite ()*	Epsomite	Zn(SO₄)·7H₂O	14.1	13.1	0		188
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	14.1	13.1	0		6890
Halotrichite ()*	Halotrichite	Fe²⁺Al₂(SO₄)₄·22H₂O	14.1	13.1	0		409
Hematite ()*	Corundum	Fe₂O₃	13.7	13.7	1	241012	14640
Hexahydrite ()*	Hexahydrite	Mg(SO₄)·6H₂O	13.7	13.7	1	240987	251
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	14.1	13.1	0		5433
Ilsemannite ()*	None	Mo₃O₈·nH₂O (?)	13.7	13.7	1	241009	123
Jalpaite ()*	Jalpaite	Ag₃CuS₂	14.1	13.1	2	241031,241033	116
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	13.7	13.7	1	240998	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	14.1	13.1	2	240998,241020	5591
Kolymite ()*	None	Cu₇Hg₆	14.1	13.1	2	241025,241026	7
Magnesite ()*	Calcite	Mg(CO₃)	13.7	13.7	1	241014	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	14.1	13.1	0		14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	13.7	13.7	1	241013	12537
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O	14.1	13.1	0		915
Miargyrite ()*	None	AgSbS₂	14.1	13.1	2	241017,241029	300
Molybdenite ()*	Molybdenite	MoS₂	14.1	13.1	4	240989,241009,241018,241025	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	13.7	13.7	1	241009	1508
Moschellandsbergite ()*	None	Ag₂Hg₃	14.1	13.1	2	241025,241026	24
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	14.1	13.1	0		17380
Natroalunite ()*	Alunite	NaAl₃(SO₄)₂(OH)₆	14.1	13.1	0		128
Opal ()*	Amorphous	SiO₂·nH₂O	14.1	13.1	0		2994
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]	14.1	13.1	2	241020,241029	249
Pentahydrite ()*	Chalcanthite	Mg(SO₄)·5H₂O	14.1	13.1	0		32
Pickeringite ()*	Halotrichite	MgAl₂(SO₄)₄·22H₂O	14.1	13.1	0		265
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	14.1	13.1	5	240984,241013,241020,241021,241025	716
Powellite ()*	Scheelite	Ca(MoO₄)	13.7	13.7	1	241009	494
Proustite ()*	None	Ag₃AsS₃	14.1	13.1	2	241022,241025	733
Pyrargyrite ()*	None	Ag₃SbS₃	14.1	13.1	3	240998,241017,241020	1425
Pyrite ()*	Pyrite	FeS₂	14.1	13.1	14	240984,240989,240995,240998,241009,241010,241015,241022,241024,241027,241029,241030,241031,241033	39462
Pyrolusite ()*	Rutile	MnO₂	13.7	13.7	1	241014	3106
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	14.1	13.1	0		1725
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	14.1	13.1	0		771
Pyrrhotite ()*	Nickeline	Fe₇S₈	13.7	13.7	1	240989	9056
Quartz ()*	Quartz	SiO₂	14.1	13.1	29	240982,240983,240984,240987,240989,240991,240995,240997,240998,240999,241009,241011,241012,241013,241015,241017,241020,241021,241022,241024,241025,241026,241027,241028,241029,241030,241031,241032,241033	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	14.1	13.1	1	241020	1711
Rutile ()*	Rutile	TiO₂	14.1	13.1	0		5614
Scolecite ()*	Natrolite	Ca(Si₃Al₂)O₁₀·3H₂O	14.1	13.1	0		390
Silver ()*	Copper	Ag	14.1	13.1	4	241009,241025,241026,241028	5186
Sphalerite ()*	Sphalerite	ZnS	14.1	13.1	23	240983,240984,240987,240989,240998,240999,241009,241012,241013,241017,241020,241021,241022,241024,241025,241026,241027,241028,241029,241030,241031,241032,241033	21482
Stephanite ()*	None	Ag₅SbS₄	14.1	13.1	2	241025,241028	586
Sternbergite ()*	Cubanite	AgFe₂S₃	14.1	13.1	0		62
Stibarsen ()*	Arsenic	SbAs	14.1	13.1	1	241029	48
Stibnite ()*	Stibnite	Sb₂S₃	14.1	13.1	1	241022	3418
Stromeyerite ()*	None	CuAgS	14.1	13.1	1	241031	332
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	14.1	13.1	1	241020	1803
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	14.1	13.1	5	240989,241020,241022,241027,241031	5317
Thomsonite-Ca ()*	Thomsonite	NaCa₂(Al₅Si₅)O₂₀·6H₂O	14.1	13.1	1	241020	452
Uytenbogaardtite ()*	Uytenbogaardtite	Ag₃AuS₂	13.7	13.7	1	241020	46
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O	13.7	13.7	1	240985	636
Wairakite ()*	Analcime	Ca(Si₄Al₂)O₁₂·2H₂O	14.1	13.1	0		73

2 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
	AJES44_373-00013	13.7	13.7	13.7										Au	23962	Comstock Lode, Virginia City, Comstock District, Storey Co., Nevada, USA	Comstock Lode	Sillitoe (1997)	10.1080/08120099708728318	AJES44_373
	Hg-00096	14.1	13.1		K-Ar								Kolymite, Moschellandsbergite	Hg	23962	Comstock Lode, Virginia City, Comstock District, Storey Co., Nevada, USA		Vikre et al. (1988)	10.2113/gsecongeo.83.4.864	EG83_864

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...