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:
Spenceville, Spenceville District, Nevada Co., California, USA

Oldest recorded age at locality: 170
Youngest recorded age at locality: 170

mindat Locality ID: 209498
mindat URL: http://www.mindat.org/loc-209498.html

Tectonic Settings:

Total number of sublocalities beneath "Spenceville, Spenceville District, Nevada Co., California, USA": 14
Total number of bottom-level sublocalities: 14

Number of Child Localities: 14
Child Localities:
Arkasas Traveler Mine (Mineral Hill Group)
Bitner Group (Mother Lode Claim)
California Gold And Copper Mine (California Gold And Copper Co.; Sixteen-to-One Claim; Jackson Claim)
Champion Copper Mine (Champion)
Grass Valley Copper Mine
Green Lead Mine (Eureka Consolidated; Eureka Cons)
Iowa Consolidated Mine (Iowa Cons.; Nob Hill & Contact)
Last Chance Mine (Mineral Hill Group)
Lotzen Ranch Prospect
Mineral Hill Group (Western Copper; Monmouth - Climax)
NW Extension Capitol Copper (NW Ext. Capitol Copper)
Spenceville Mine (Spense Mineral; San Francisco Copper Company; Copper Claim; Imperial Paint And Copper Co. Property)
Unnamed Cu Occurrence [7]
Wetteran Ranch (Watterson?)

Latitude: 39°7'53"N
Longitude: 121°14'49"W
Decimal Degree (lat, lon): 39.131388888889,-121.24694444444

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.

Calcite	Chalcopyrite	Clinozoisite	Copper	Covellite	Epidote	Malachite	Marcasite	None	Not in a structural group
Pyrite	Quartz	Rocksalt	Sphalerite

Bornite ()*	Calcite ()*	Chalcocite ()*	Chalcopyrite ()*	Covellite ()*
Cuprite ()*	Epidote ()*	Galena ()*	Gold ()*	Malachite ()*
Marcasite ()*	Pyrite ()*	Quartz ()*	Silver ()*	Sphalerite ()*

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 Au C Ca Cu Fe H O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Chalcopyrite Clinozoisite Copper Covellite Epidote Malachite Marcasite None Not in a structural group
Pyrite Quartz Rocksalt Sphalerite

15 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
Bornite ()*	None	Cu₅FeS₄	170	170	4	166313,166316,166319,166322	5516
Calcite ()*	Calcite	Ca(CO₃)			1	166311	27770
Chalcocite ()*	None	Cu₂S	170	170	1	166322	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	170	170	8	166311,166312,166313,166316,166318,166319,166320,166322	27198
Covellite ()*	Covellite	CuS	170	170	1	166322	4165
Cuprite ()*	Not in a structural group	Cu₂O			1	166319	2970
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			1	166311	8173
Galena ()*	Rocksalt	PbS			1	166311	24243
Gold ()*	Copper	Au			3	166311,166314,166317	30554
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			2	166313,166324	12537
Marcasite ()*	Marcasite	FeS₂	170	170	1	166322	5674
Pyrite ()*	Pyrite	FeS₂	170	170	5	166311,166318,166319,166322,166324	39462
Quartz ()*	Quartz	SiO₂	170	170	8	166311,166313,166314,166316,166317,166319,166321,166322	61156
Silver ()*	Copper	Ag			1	166311	5186
Sphalerite ()*	Sphalerite	ZnS			1	166311	21482

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
	vms-01042	170	170	Middle-Upper Jurassic										S	84746	Spenceville Mine (Spense Mineral; San Francisco Copper Company; Copper Claim; Imperial Paint And Copper Co. Property), Spenceville, Spenceville District, Nevada Co., California, USA	Spenceville	Moiser et al. (2009)		USGSOFR2009_1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...