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:
La Barr Meadows, Grass Valley District, Nevada Co., California, USA

Oldest recorded age at locality: 204
Youngest recorded age at locality: 204

mindat Locality ID: 267957
mindat URL: http://www.mindat.org/loc-267957.html

Tectonic Settings:

Total number of sublocalities beneath "La Barr Meadows, Grass Valley District, Nevada Co., California, USA": 72
Total number of bottom-level sublocalities: 66

Number of Child Localities: 63
Child Localities:
Ajax Mine
Allison Ranch Quartz Mine (Allison Ranch Mine; Allison Ranch Vein; Allison Ranch Qtz.; Crossus Consolidated Mine; Stanton Mine)
Amador Mine (Amador Consolidated Claims; Amador Lode; Amanda Mine)
Belle Of France Mine
Belle Union Mine
Ben Franklin Mine (Cleveland Claim; Indiana; St.Stephen[s] Claim; Wilcox Claim; Avondale Claim; Alaska Claim; Alaska Vein; Ben Franklin Vein)
Blue Bird Consolidated Quartz Mine (Blue Bird Cons Qtz.; Blue Bird Consolidated)
Bowden Prospect
Buckskin Lode Mine (Silver Pick; Silver Pick Fraction; Red Rock; Golden Lead; Golden Lily; Golden Lily Fraction)
Buena Vista Mine
Cleveland Mine (Indiana; Ben Franklin; St. Stephens)
Conlon Mine (Winding Lode; Winding Claim; Lafayette Claim; Conlin; Conlan; Comet Claim; Jefferson Claim; Jefferson Lode)
Connecticut Lode Mine
Copens Mine
Croesus North Extension Lode Mine (Croesus North Ext Lode)
Daisy King & Golden Shore Mine
Diamond - Bullion - Alaska Mine Group (Consolidated Bullion Mine; Diamond Claim; Bullion Claim; Alaska Claim; Union Jack Claim; Galena Claim; Ione Claim; Big Diamond Vein; Galena-Bullion Vein; Alaska Vein)
Dividend Mine
Eclipse Lode Mine (Eclipse Mine)
Fair Play Mine
Franklin Mine (Ford)
Gold Run Consolidated Mine (Gold Run Con.)
Golden Lily Group (Golden Lily Gp.; Golden Lead; Buckskin; Red Rock Claims; Silver Pick)
Golden Shore Mine (Daisy King & Golden Shore; Daisy King)
Golden Star Mine (Golden Star Lode)
Goodall Consolidated Mine (Goodall Con; Goodall Mine; Southbend; Oro Fino; Manhatten; Govonor Perkins; Congo)
Grover Cleveland Mine
Haiselton Lode Mine (Haiselton)
Hill Lode Mine
Indiana Lode Mine (Income Lode)
Keystone Lode Mine (Keystone Mine)
Lone Ridge Mine
Loutzenheizer Tract
Lucky Boy Lode Mine (Lucky Boy Mine)
Mary Ann Mine (Mary Ann Vein)
McDonald Ranch Mine
Minnesota Mine
Modoc Mine
Northern Belle Quartz Mine (Northern Belle Qtz; Thomas Electrum)
Oakland Quartz Mine (Oakland Mine)
Pacific Mine [1]
Panama Lode Mine
Payday Mine
Phoenix Park Mine
Polaris Mine
Prudential Mine (Slate Ledge; Perrin & Company; Selena)
Rattlesnake Occurrence [2]
Rattlesnake Quartz Mine (Rattlesnake Qtz)
Shamrock Mine
South Centennial Lode Mine (South Centennial Mine; Wasp; Summit; Lizard)
Spion Kop Occurrence
St. Stephens Mine
Starlight Mine
Stonewall Jackson Mine
Sunside Lode Mine (Sunside Mine)
Syndicate Consolidated Group (Syndicate Cons. Group; Syndicate Mine; New Idea Quartz Claim; Great Eastern Quartz Mine; Great Eastern Claim; Golden Chain Quartz Mine; Golden Claim)
Unknown Fe Occurrence [1]
Unnamed Fe Occurrence [3] (Iron Occurrence)
William Tell Group
William Tell Lode Mine (William Tell Annex)
Winfield Scott Mine
Woodberry Mine
Young America Lode Mine

Latitude: 39°10'42"N
Longitude: 121°3'28"W
Decimal Degree (lat, lon): 39.178333333333,-121.05777777778

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	Arsenopyrite	Calcite	Chalcopyrite	Clay	Copper	Mica	None	Pyrite	Quartz
Rocksalt	Scheelite	Sphalerite	Spinel

Acanthite ()*	Ankerite ()*	Arsenopyrite ()*	Calcite ()*	Chalcopyrite ()*
Chromite ()*	Galena ()*	Gold ()*	Magnetite ()*	Muscovite ()*
Pyrargyrite ()*	Pyrite ()*	Quartz ()*	Scheelite ()*	Sphalerite ()*
Stephanite ()*

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 C Ca Cr Cu Fe H K O Pb S Sb Si W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Arsenopyrite Calcite Chalcopyrite Clay Copper Mica None Pyrite Quartz
Rocksalt Scheelite Sphalerite Spinel

16 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			1	165608	2793
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			3	165608,165627,165659	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS			1	165621	9052
Calcite ()*	Calcite	Ca(CO₃)			2	165608,165627	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			2	165608,165627	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	204	204	1	165617	3902
Galena ()*	Rocksalt	PbS			4	165608,165621,165627,165629	24243
Gold ()*	Copper	Au			60	165608,165609,165610,165611,165612,165613,165614,165615,165616,165618,165619,165620,165621,165622,165623,165624,165625,165626,165627,165628,165629,165630,165632,165633,165634,165635,165636,165637,165638,165639,165640,165641,165642,165643,165644,165645,165646,165647,165649,165652,165654,165655,165656,165657,165658,165659,165660,165661,165663,165664,165665,165667,165668,165669,165670,165671,165675,165676,165677,165678	30554
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	165673	14899
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			2	165608,165627	17380
Pyrargyrite ()*	None	Ag₃SbS₃			1	165608	1425
Pyrite ()*	Pyrite	FeS₂			6	165608,165612,165621,165627,165629,165676	39462
Quartz ()*	Quartz	SiO₂			60	165608,165610,165611,165612,165613,165614,165615,165616,165618,165619,165620,165621,165622,165623,165624,165625,165626,165627,165628,165629,165630,165632,165633,165634,165635,165636,165637,165638,165639,165640,165641,165642,165643,165644,165645,165646,165647,165649,165652,165654,165655,165656,165657,165658,165659,165660,165661,165663,165664,165665,165667,165668,165669,165670,165671,165673,165675,165676,165677,165678	61156
Scheelite ()*	Scheelite	Ca(WO₄)			2	165609,165629	4894
Sphalerite ()*	Sphalerite	ZnS			2	165608,165627	21482
Stephanite ()*	None	Ag₅SbS₄			1	165608	586

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-00181	204	204	Upper Triassic-Lower Jurassic or older (204±2 Ma U-Pb zircon on leucodiorite)										Cr	83896	Bowden Prospect, La Barr Meadows, Grass Valley District, Nevada Co., California, USA	Bowden	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...