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:
Esmeralda, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA

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

mindat Locality ID: 220168
mindat URL: http://www.mindat.org/loc-220168.html

Tectonic Settings:

Total number of sublocalities beneath "Esmeralda, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA": 23
Total number of bottom-level sublocalities: 23

Number of Child Localities: 23
Child Localities:
Albany Mine
Amalia Occurrence
Basco Mine
Bence Mine [1] (Tellurium Mine; Esmeralda Extension Mine)
Bonehard Mine
Bruce Mine
Bruzza Mine (Brazza)
Chaparral And Blue Ribbon Mine (Chaparral & Blue Ribbon)
Coralie Mine
Economic Mine (Cuneo Mine)
Esmeralda And Sunrise Mine
Fontanac Mine
Fricot Holdings Mine (Fricot Group; Rochester Square Block; Albany; Idaho Construction; Columbus Claim; Oswego Claim; Horseshoe Claim; Philadelphia Claim; Governor Davis Claim; Twentieth Century Claim; Bounty Placer Claim; White Pine Claim; Bonanza Placer
Grace Darling Mine
Indian Creek Deposit (Esmeralda Deposit)
Leap Year Placer
Lopez Mine
Ore Finea Diggens (Ore Finea Diggings)
Sunrise Mine [2]
Unknown Au Occurrence [33]
Unknown Au Occurrence [36]
Unknown Fe Occurrence [1]
Unnamed Epidote Occurrence [1]

Latitude: 38°9'47"N
Longitude: 120°32'6"W
Decimal Degree (lat, lon): 38.163055555556,-120.535

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.

Clay	Clinozoisite	Copper	Epidote	None	Quartz	Talc

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 Au C Ca Fe H Mg O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Clay Clinozoisite Copper Epidote None Quartz Talc

5 IMA Minerals at location:

Epidote ()*	Gold ()*	Graphite ()*	Quartz ()*	Talc ()*

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
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	100	100	1	152327	8173
Gold ()*	Copper	Au	100	100	18	152305,152306,152307,152308,152309,152310,152311,152312,152313,152314,152315,152316,152317,152318,152320,152321,152323,152325	30554
Graphite ()*	None	C	100	100	1	152308	2812
Quartz ()*	Quartz	SiO₂	100	100	14	152305,152307,152308,152309,152310,152311,152313,152314,152315,152316,152317,152318,152321,152323	61156
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	100	100	1	152314	3337

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
	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

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...