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 Lode, Virginia City, Comstock District, Storey Co., Nevada, USA

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

mindat Locality ID: 23962
mindat URL: http://www.mindat.org/loc-23962.html

Tectonic Settings:

Total number of sublocalities beneath "Comstock Lode, Virginia City, Comstock District, Storey Co., Nevada, USA": 13
Total number of bottom-level sublocalities: 13

Number of Child Localities: 13
Child Localities:
Best & Belcher Mine
California Mine
Central Comstock Mine
Chollar Mine
Consolidated Virginia Mine (Con Virginia Mine)
Gould & Curry Mine
Hale & Norcross Mine
Mexican Mine
Ophir Mine
Potosi Mine
Savage Mine (Savage And Hall Mine)
Union Mine
Yellow Jacket Mine

Latitude: 39°18'20"N
Longitude: 119°38'57"W
Decimal Degree (lat, lon): 39.305555555556,-119.64916666667

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	Arsenic	Arsenolite	Calcite	Chalcopyrite	Clay	Copper	Covellite	Jalpaite
Kaolinite	Molybdenite	None	Polybasite	Pyrite	Quartz	Rocksalt	Sphalerite	Stibnite	Tetrahedrite
Thomsonite	Uytenbogaardtite

Acanthite ()*	Aguilarite ()*	Arsenic ()*	Arsenolite ()*	Aurorite ()*
Calcite ()*	Chalcocite ()*	Chalcopyrite ()*	Chlorargyrite ()*	Cosalite ()*
Covellite ()*	Dyscrasite ()*	Galena ()*	Gold ()*	Jalpaite ()*
Kaolinite ()*	Kolymite ()*	Miargyrite ()*	Molybdenite ()*	Moschellandsbergite ()*
Pearceite ()*	Polybasite ()*	Proustite ()*	Pyrargyrite ()*	Pyrite ()*
Quartz ()*	Rhodochrosite ()*	Silver ()*	Sphalerite ()*	Stephanite ()*
Stibarsen ()*	Stibnite ()*	Stromeyerite ()*	Tennantite-(Fe) ()*	Tetrahedrite-(Zn) ()*
Thomsonite-Ca ()*	Uytenbogaardtite ()*

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 Mn Mo Na O Pb S Sb Se Si Zn

Elements from minerals reported directly at this locality: Ag Al As Au Bi C Ca Cu Fe H Mn Na O Pb S Sb Se Si

Structural Groups for minerals in this locality:
Acanthite Allargentum Arsenic Arsenolite Calcite Chalcopyrite Clay Copper Covellite Jalpaite
Kaolinite Molybdenite None Polybasite Pyrite Quartz Rocksalt Sphalerite Stibnite Tetrahedrite
Thomsonite Uytenbogaardtite

37 IMA Minerals at location:

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	10	241021,241022,241024,241025,241026,241027,241028,241029,241030,241031	2793
Aguilarite ()*	Acanthite	Ag₄SeS	14.1	13.1	0		87
Arsenic ()*	Arsenic	As	14.1	13.1	1	241029	379
Arsenolite ()*	Arsenolite	As₂O₃	14.1	13.1	1	241029	231
Aurorite ()*	None	Mn²⁺Mn⁴⁺₃O₇·3H₂O	14.1	13.1	1	241030	22
Calcite ()*	Calcite	Ca(CO₃)	14.1	13.1	1	241024	27770
Chalcocite ()*	None	Cu₂S	14.1	13.1	2	241022,241027	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	14.1	13.1	5	241022,241027,241029,241030,241031	27198
Chlorargyrite ()*	Rocksalt	AgCl	14.1	13.1	1	241024	1382
Cosalite ()*	None	Pb₂Bi₂S₅	14.1	13.1	0		344
Covellite ()*	Covellite	CuS	14.1	13.1	1	241027	4165
Dyscrasite ()*	Allargentum	Ag_3+xSb_1-x (x ≈ 0.2)	14.1	13.1	0		180
Galena ()*	Rocksalt	PbS	14.1	13.1	6	241022,241025,241027,241029,241030,241031	24243
Gold ()*	Copper	Au	13.7	13.7	11	241021,241022,241024,241025,241026,241027,241028,241029,241031,241032,241033	30554
Jalpaite ()*	Jalpaite	Ag₃CuS₂	14.1	13.1	2	241031,241033	116
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	14.1	13.1	0		5591
Kolymite ()*	None	Cu₇Hg₆	14.1	13.1	2	241025,241026	7
Miargyrite ()*	None	AgSbS₂	14.1	13.1	1	241029	300
Molybdenite ()*	Molybdenite	MoS₂	14.1	13.1	1	241025	5800
Moschellandsbergite ()*	None	Ag₂Hg₃	14.1	13.1	2	241025,241026	24
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]	14.1	13.1	1	241029	249
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	14.1	13.1	2	241021,241025	716
Proustite ()*	None	Ag₃AsS₃	14.1	13.1	2	241022,241025	733
Pyrargyrite ()*	None	Ag₃SbS₃	14.1	13.1	0		1425
Pyrite ()*	Pyrite	FeS₂	14.1	13.1	7	241022,241024,241027,241029,241030,241031,241033	39462
Quartz ()*	Quartz	SiO₂	14.1	13.1	12	241021,241022,241024,241025,241026,241027,241028,241029,241030,241031,241032,241033	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	14.1	13.1	0		1711
Silver ()*	Copper	Ag	14.1	13.1	3	241025,241026,241028	5186
Sphalerite ()*	Sphalerite	ZnS	14.1	13.1	12	241021,241022,241024,241025,241026,241027,241028,241029,241030,241031,241032,241033	21482
Stephanite ()*	None	Ag₅SbS₄	14.1	13.1	2	241025,241028	586
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	0		1803
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	14.1	13.1	3	241022,241027,241031	5317
Thomsonite-Ca ()*	Thomsonite	NaCa₂(Al₅Si₅)O₂₀·6H₂O	14.1	13.1	0		452
Uytenbogaardtite ()*	Uytenbogaardtite	Ag₃AuS₂	13.7	13.7	0		46

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...