Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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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:
Mill Creek Deposits, Mount Tom, Fresno Co., California, USA

Oldest recorded age at locality: 195
Youngest recorded age at locality: 145

mindat Locality ID: 76412
mindat URL: http://www.mindat.org/loc-76412.html

Tectonic Settings:

Total number of sublocalities beneath "Mill Creek Deposits, Mount Tom, Fresno Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 37°21'57"N
Longitude: 119°17'7"W
Decimal Degree (lat, lon): 37.365833333333,-119.28527777778

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.

No IMA Minerals occur at this locality according to mindat

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_400	Quartz diorite, Hwy. 180 E of Squaw Valley and 1.9 km W of Mill Creek bridge; includes some metasedimentary rock (biotite schist) and migmatite See Table A1. Pluton described as "unnamed."

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
	Michelle_400	195	145	>145	U-Pb	Preferred intrusive age		zircon	5			Zircon			76412	Mill Creek Deposits, Mount Tom, Fresno Co., California, USA	Near Mill Creek Bridge	Chen and Moore (1982)	10.1029/JB087iB06p04761	AJS299_93	See p. 4768, Table 2. Age group J (Jurassic 140-195 ma).

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...