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:
Toyon, Pardee District, Calaveras Co., California, USA

Oldest recorded age at locality: 281
Youngest recorded age at locality: 100

mindat Locality ID: 260439
mindat URL: http://www.mindat.org/loc-260439.html

Tectonic Settings:

Total number of sublocalities beneath "Toyon, Pardee District, Calaveras Co., California, USA": 19
Total number of bottom-level sublocalities: 19

Number of Child Localities: 19
Child Localities:
Casnelli Mine (Mullen)
E. A. Harah Occurrence
Hangill (J. R. Gillam)
Hardscrabble Occurrence (S. E. Evans)
Haupt Ranch Placer Mine
Hooten Ranch Deposit
L. M. Schrack Occurrence (Sam E. Evans)
Mountain Gold Dredging Company Placer
Rhoden Deposit
Spring Valley Mine
Spring Valley Placer (Baumhogger Property)
Unknown Au Occurrence [20]
Unknown Au Occurrence [42]
Unknown Cu Occurrence [5]
Unnamed Au Mine [54]
Unnamed Au Placer [61]
Unnamed Cu Occurrernce [11]
Unnamed Limestone Deposits [6]
Vogelgesang Placer (S. E. Gourley)

Latitude: 38°12'24"N
Longitude: 120°46'15"W
Decimal Degree (lat, lon): 38.206666666667,-120.77083333333

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.

Amorphous	Copper	None	Quartz

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 H O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Copper None Quartz

3 IMA Minerals at location:

Gold ()*	Opal ()*	Quartz ()*

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
Gold ()*	Copper	Au	281	100	5	153324,153325,153331,153333,153342	30554
Opal ()*	Amorphous	SiO₂·nH₂O	100	100	1	153329	2994
Quartz ()*	Quartz	SiO₂	100	100	3	153324,153329,153333	61156

2 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
	podchrome-00069	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)										Cr	76174	Vogelgesang Placer (S. E. Gourley), Toyon, Pardee District, Calaveras Co., California, USA	Vogelgesang	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...