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

mindat Locality ID: 266403
mindat URL: http://www.mindat.org/loc-266403.html

Tectonic Settings:

Total number of sublocalities beneath "Duncan Hill, Auburn, Ophir District (Auburn District; Duncan Hill District), Placer Co., California, USA": 20
Total number of bottom-level sublocalities: 20

Number of Child Localities: 20
Child Localities:
Booth Mine
Brush Fence Mine
Butcher Boy Claim
Centennial Mine (Centennial Vein)
Conrad Mine
Crandell Mine (Cradall; Crandall; Cox & Dunton Mine; Cox Claim; Denton Claim; Sacramento Claim; North Star; Florence May)
East Extension Shurtleff; East Extension Conrad And New Hope Mine (E. Ext. Shurtleff / E. Ext. Shurtleff; E. Ext. Conrad And New Hope)
Gold Leaf Claim
Golden Stag Mine (Monahan Mine)
Green Mine
Hope Mine
Lizard Mine (Lizzard Cons.; Lizzard Consolidated)
Lundquist Mine (Lindquist Claim)
Malmberg Mine
Mina Rica Mine (Minna Ricca)
Mollie Mine (Mollie Stark)
Moore Mine
Pine Tree Mine (Pine Tree Vein)
R. H. Lee Claim
Unnamed Zn Occurrence [1]

Latitude: 38°53'38"N
Longitude: 121°6'3"W
Decimal Degree (lat, lon): 38.893888888889,-121.10083333333

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	Molybdenite	None	Pyrite	Quartz	Rocksalt	Sphalerite	Tetrahedrite

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 Cu Fe Mo O Pb S Sb Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Chalcopyrite Copper Molybdenite None Pyrite Quartz Rocksalt Sphalerite Tetrahedrite

8 IMA Minerals at location:

Chalcopyrite ()*	Galena ()*	Gold ()*	Molybdenite ()*	Pyrite ()*
Quartz ()*	Sphalerite ()*	Tetrahedrite-(Zn) ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2	167506,167519	27198
Galena ()*	Rocksalt	PbS	5	167503,167507,167509,167518,167519	24243
Gold ()*	Copper	Au	19	167503,167504,167505,167506,167507,167508,167509,167510,167511,167512,167513,167514,167515,167516,167517,167518,167519,167520,167521	30554
Molybdenite ()*	Molybdenite	MoS₂	1	167511	5800
Pyrite ()*	Pyrite	FeS₂	4	167503,167506,167517,167519	39462
Quartz ()*	Quartz	SiO₂	17	167503,167505,167506,167507,167508,167509,167510,167511,167512,167513,167514,167515,167516,167517,167518,167519,167521	61156
Sphalerite ()*	Sphalerite	ZnS	2	167519,167522	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	2	167511,167520	5317

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...