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:
Harvard Mine (Harvard Mine Group; McCann Claim; Mooney Claim; Pacific Claim; Vulture Claim; Trio Claim; Sobrante Claim), Jamestown Mine (Jamestown Group), Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA

Oldest recorded age at locality: 5.3
Youngest recorded age at locality: 0

mindat Locality ID: 8071
mindat URL: http://www.mindat.org/loc-8071.html

Tectonic Settings:

Total number of sublocalities beneath "Harvard Mine (Harvard Mine Group; McCann Claim; Mooney Claim; Pacific Claim; Vulture Claim; Trio Claim; Sobrante Claim), Jamestown Mine (Jamestown Group), Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 37°56'44"N
Longitude: 120°26'12"W
Decimal Degree (lat, lon): 37.945555555556,-120.43666666667

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	Clay	Copper	Mica	None	Quartz	Rocksalt

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 Fe H K O Pb S Si Te

Elements from minerals reported directly at this locality: Ag Al Au Fe H K O Pb S Si Te

Structural Groups for minerals in this locality:
Acanthite Clay Copper Mica None Quartz Rocksalt

7 IMA Minerals at location:

Acanthite ()*	Chenguodaite ()*	Galena ()*	Gold ()*	Muscovite ()*
Petzite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S	5.3	2793
Chenguodaite ()*	None	Ag₉FeTe₂S₄	5.3	2
Galena ()*	Rocksalt	PbS	5.3	24243
Gold ()*	Copper	Au	5.3	30554
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	5.3	17380
Petzite ()*	None	Ag₃AuTe₂	5.3	409
Quartz ()*	Quartz	SiO₂	5.3	61156

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
	Hg-00034	5.3	0		?-?						Yes		Imiterite	Hg	3581	Golden Rule Mine, Jumper & Golden Rule Group (Jumper Mine; Jumper Claim; Jumper Deposit; New Era Claim), Jamestown Mine (Jamestown Group), Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA	California Mercury Occurrences	Studemeister (1984)	10.1007/BF00199786	MD19_202

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...