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:
McCormick Mine (McCormick Property; Terry And Sell Lease [WWI]), Yosemite Junction, Tuolumne Co., California, USA

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

mindat Locality ID: 97966
mindat URL: http://www.mindat.org/loc-97966.html

Tectonic Settings:

Total number of sublocalities beneath "McCormick Mine (McCormick Property; Terry And Sell Lease [WWI]), Yosemite Junction, Tuolumne Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 37°52'48"N
Longitude: 120°30'31"W
Decimal Degree (lat, lon): 37.88,-120.50861111111

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.

Calcite	Chlorite	Clay	Garnet	None	Rutile	Spinel	Talc

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: Al C Ca Cr Fe H Mg Mn O Si

Elements from minerals reported directly at this locality: Al C Ca Cr Fe H Mg Mn O Si

Structural Groups for minerals in this locality:
Calcite Chlorite Clay Garnet None Rutile Spinel Talc

7 IMA Minerals at location:

Clinochlore ()*	Magnesiochromite ()*	Magnesite ()*	Magnetite ()*	Manganite ()*
Talc ()*	Uvarovite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	281	281	1756
Magnesiochromite ()*	Spinel	MgCr₂O₄	281	281	311
Magnesite ()*	Calcite	Mg(CO₃)	281	281	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	281	281	14899
Manganite ()*	Rutile	Mn³⁺O(OH)	281	281	770
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	281	281	3337
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃	281	281	212

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
	podchrome-00091	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)										Cr	97966	McCormick Mine (McCormick Property; Terry And Sell Lease [WWI]), Yosemite Junction, Tuolumne Co., California, USA	McCormick South	Moiser et al. (2012)		USGSSIR2012_5157
	podchrome-00092	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)										Cr	97966	McCormick Mine (McCormick Property; Terry And Sell Lease [WWI]), Yosemite Junction, Tuolumne Co., California, USA	McCormick North	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...