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:
Sierra City, Sierra City District, Sierra Co., California, USA

Oldest recorded age at locality: 400
Youngest recorded age at locality: 400

mindat Locality ID: 210499
mindat URL: http://www.mindat.org/loc-210499.html

Tectonic Settings:

Total number of sublocalities beneath "Sierra City, Sierra City District, Sierra Co., California, USA": 41
Total number of bottom-level sublocalities: 40

Number of Child Localities: 39
Child Localities:
Antlered Crest Mine
Arkansas Flat Occurrence
Bigelow Mine
Bradly Consolidated Group
Chipps Mine (Swastika)
Commodore Placer
Devine Placer Mine
Dottie Q Mine
Dudley Mine (Dudly)
Euclid Group
Fair Prospect
Gentile Flat Occurrence
Green And Farr Prospect (Green And Fair Prospects; Green Prospect)
Hannix Placer
Hilda Mine
Kentucky Mine (Kentuck Mine)
Klondyke Mine
Lloyd And Milward Occurrence
Middle Yuba River Placer [2]
Milton Chrome Claim
Milton Claim (Redmayne And McGonigal Prospect)
Mountain Mine (Bonanza)
Paterson Placer
Phoenix Mine
Roman Mine
Sacred Mount & Butte Saddle Group (Butte Saddle Group; Sacred Mount Group)
Shamrock Group
Sierra Buttes Mine (Sierra City Mine; Bigelow Mine; Buttes Union Mine; Ariel Independence Mine; Ariel Vein; Whiskey Vein; Smith Vein)
Unidentified Au Mine [13]
Unidentified Au Mine [14]
Unidentified Au Mine [16]
Unidentified Au Occurrence [51]
Unnamed Au Prospect [6]
Unnamed Au Prospect [7]
Unnamed Au Prospect [8]
Unnamed Cr-Au Occurrence [2]
Unnamed Wollastonite Occurrence [1]
Waterfall Placer (Rocky Bar)
William Tell Mine

Latitude: 39°33'53"N
Longitude: 120°37'17"W
Decimal Degree (lat, lon): 39.564722222222,-120.62138888889

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.

Chalcopyrite	Copper	Garnet	Marcasite	Molybdenite	None	Pyrite	Quartz	Rocksalt	Spinel
Wollastonite

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: Au Ca Cr Cu Fe H Mo O Pb S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Chalcopyrite Copper Garnet Marcasite Molybdenite None Pyrite Quartz Rocksalt Spinel
Wollastonite

12 IMA Minerals at location:

Chalcopyrite ()*	Chromite ()*	Ferrimolybdite ()*	Galena ()*	Gold ()*
Marcasite ()*	Molybdenite ()*	Molybdite ()*	Pyrite ()*	Quartz ()*
Uvarovite ()*	Wollastonite ()*

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
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			1	177990	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	400	400	1	177987	3902
Ferrimolybdite ()*	None	Fe³⁺₂(Mo⁶⁺O₄)₃·7H₂O			1	177996	345
Galena ()*	Rocksalt	PbS			1	177990	24243
Gold ()*	Copper	Au			18	177969,177971,177973,177975,177976,177981,177982,177983,177988,177990,177991,177992,177995,177996,177997,177998,177999,178007	30554
Marcasite ()*	Marcasite	FeS₂			1	177996	5674
Molybdenite ()*	Molybdenite	MoS₂			1	177996	5800
Molybdite ()*	None	MoO₃			1	177996	140
Pyrite ()*	Pyrite	FeS₂			2	177990,177996	39462
Quartz ()*	Quartz	SiO₂			14	177969,177971,177975,177976,177982,177988,177990,177991,177995,177996,177997,177998,177999,178007	61156
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃	400	400	1	177987	212
Wollastonite ()*	Wollastonite	CaSiO₃			1	178005	1247

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
	podchrome-00190	400	400	Ordovician-Devonian? (fossils); 1318-561 Ma U-Pb detrital zircon										Cr	93430	Milton Claim (Redmayne And McGonigal Prospect), Sierra City, Sierra City District, Sierra Co., California, USA	Milton Claim	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...