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:
Copperopolis Mines (Copperopolis Group), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA

Oldest recorded age at locality: 170
Youngest recorded age at locality: 100

mindat Locality ID: 213255
mindat URL: http://www.mindat.org/loc-213255.html

Tectonic Settings:

Total number of sublocalities beneath "Copperopolis Mines (Copperopolis Group), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Empire Mine (Cleveland; Jumbo; Royal)
Keystone-Union Mine (Calaveras Copper)
North Keystone Mine (Keystone Mine)

Latitude: 37°58'52"N
Longitude: 120°38'38"W
Decimal Degree (lat, lon): 37.981111111111,-120.64388888889

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.

Andalusite	Brochantite	Calcite	Chalcopyrite	Clinozoisite	Copper	Corundum	Epidote	Malachite	None
Not in a structural group	Pyrite	Quartz	Rutile	Titanite

Andalusite ()*	Azurite ()*	Bornite ()*	Brochantite ()*	Calcite ()*
Chalcopyrite ()*	Copper ()*	Cuprite ()*	Epidote ()*	Hematite ()*
Ilmenite ()*	Malachite ()*	Pyrite ()*	Quartz ()*	Rutile ()*
Tenorite ()*	Titanite ()*

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: Al C Ca Cu Fe H O S Si Ti

Elements from minerals reported directly at this locality: C Cu H O S

Structural Groups for minerals in this locality:
Andalusite Brochantite Calcite Chalcopyrite Clinozoisite Copper Corundum Epidote Malachite None
Not in a structural group Pyrite Quartz Rutile Titanite

17 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
Andalusite ()*	Andalusite	Al₂SiO₅	170	170	1	152798	1310
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	170	170	0		5509
Bornite ()*	None	Cu₅FeS₄	170	170	1	152798	5516
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	170	170	0		1633
Calcite ()*	Calcite	Ca(CO₃)	170	170	1	152798	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	170	100	3	152796,152797,152798	27198
Copper ()*	Copper	Cu	170	170	1	152798	3846
Cuprite ()*	Not in a structural group	Cu₂O	170	100	2	152796,152798	2970
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	170	170	1	152798	8173
Hematite ()*	Corundum	Fe₂O₃	170	170	1	152798	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	170	170	1	152798	5433
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	170	170	1	152798	12537
Pyrite ()*	Pyrite	FeS₂	170	170	2	152797,152798	39462
Quartz ()*	Quartz	SiO₂	170	170	2	152797,152798	61156
Rutile ()*	Rutile	TiO₂	170	170	1	152798	5614
Tenorite ()*	None	CuO	170	170	0		1101
Titanite ()*	Titanite	CaTi(SiO₄)O	170	170	1	152798	4899

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age from other Locality	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
Mo-00156	100	100		Yes	Molybdenite	Mo	16293	Calaveras Co., California, USA	Calaveras County	Brock (1972)	10.1130/0016-7606(1972)83[3391:GOGHSC]2.0.CO;2	GSAB83_3391
vms-01034	170	170	Jurassic			S	75449	Keystone-Union Mine (Calaveras Copper), Copperopolis Mines (Copperopolis Group), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA	Keystone-Union	Moiser et al. (2009)		USGSOFR2009_1034
vms-01037	170	170	Jurassic			S	13833	North Keystone Mine (Keystone Mine), Copperopolis Mines (Copperopolis Group), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA	North Keystone	Moiser et al. (2009)		USGSOFR2009_1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...