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:
Auburn, Ophir District (Auburn District; Duncan Hill District), Placer Co., California, USA

Oldest recorded age at locality: 132
Youngest recorded age at locality: 132

mindat Locality ID: 211518
mindat URL: http://www.mindat.org/loc-211518.html

Tectonic Settings:

Total number of sublocalities beneath "Auburn, Ophir District (Auburn District; Duncan Hill District), Placer Co., California, USA": 41
Total number of bottom-level sublocalities: 40

Number of Child Localities: 21
Child Localities:
Big Pine Mine (T.W.A.)
Bouck Property
Butts Mine
California Mine (California Deposit)
Davenport Mine
Duncan Hill
Eclipse Consolidated Mine (Eclipse Mine; Morning Star Claim)
Gold Placers Inc. Mine
Gold Recoveries Corporation Placer
Golden Arcadia Mine (Golden Acacia)
Haskell Placer Mine (Hassler Placer Mine; Gaylord)
Little Banner Mine
Major Occurrence
Marguerite Mine
Oro Fino And Floyd Claims (Oro Fino & Floyd Claims)
Salig Mine
Salsic Mine
Slosson Occurrence
Unnamed Au Mine [7]
Unnamed Au Occurrence [53]
Unnamed Au-Cu-Ag Prospect [1]

Latitude: 38°53'35"N
Longitude: 121°4'48"W
Decimal Degree (lat, lon): 38.893055555556,-121.08

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	Chalcopyrite	Clay	Copper	Malachite	Mica	Molybdenite	None	Pyrite	Quartz
Rocksalt	Sphalerite	Spinel	Tetrahedrite

Acanthite ()*	Chalcopyrite ()*	Galena ()*	Gold ()*	Hausmannite ()*
Kalinite ()*	Malachite ()*	Molybdenite ()*	Muscovite ()*	Pyrite ()*
Quartz ()*	Silver ()*	Sphalerite ()*	Tetrahedrite-(Zn) ()*

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 Cu Fe H K Mn Mo O Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Al H K Mn O S

Structural Groups for minerals in this locality:
Acanthite Chalcopyrite Clay Copper Malachite Mica Molybdenite None Pyrite Quartz
Rocksalt Sphalerite Spinel Tetrahedrite

14 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	167523	2793
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	132	132	6	167497,167501,167506,167519,167523,167530	27198
Galena ()*	Rocksalt	PbS			10	167499,167503,167507,167509,167518,167519,167523,167530,167532,167533	24243
Gold ()*	Copper	Au			31	167497,167499,167500,167503,167504,167505,167506,167507,167508,167509,167510,167511,167512,167513,167514,167515,167516,167517,167518,167519,167520,167521,167523,167524,167525,167527,167528,167530,167532,167533,167535	30554
Hausmannite ()*	Spinel	Mn²⁺Mn³⁺₂O₄	132	132	0		350
Kalinite ()*	None	KAl(SO₄)₂·11H₂O	132	132	0		54
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	132	132	1	167501	12537
Molybdenite ()*	Molybdenite	MoS₂			1	167511	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	167530	17380
Pyrite ()*	Pyrite	FeS₂	132	132	10	167500,167501,167503,167506,167517,167519,167523,167528,167530,167533	39462
Quartz ()*	Quartz	SiO₂	132	132	27	167497,167499,167501,167503,167505,167506,167507,167508,167509,167510,167511,167512,167513,167514,167515,167516,167517,167518,167519,167521,167523,167528,167530,167531,167532,167533,167535	61156
Silver ()*	Copper	Ag			1	167500	5186
Sphalerite ()*	Sphalerite	ZnS			3	167519,167522,167523	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			2	167511,167520	5317

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
	USGS-Rb-Sr-05952	132	132	132	Rb-Sr	age not evaluated		whole rock							85233	Davenport Mine, Auburn, Ophir District (Auburn District; Duncan Hill District), Placer Co., California, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...