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:
Yosemite Junction, Tuolumne Co., California, USA

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

mindat Locality ID: 250220
mindat URL: http://www.mindat.org/loc-250220.html

Tectonic Settings:

Total number of sublocalities beneath "Yosemite Junction, Tuolumne Co., California, USA": 29
Total number of bottom-level sublocalities: 25

Number of Child Localities: 7
Child Localities:
Beckwith Ranch Mines
Currie Quarry (Currie Cement Mine)
McCormick Mine (McCormick Property; Terry And Sell Lease [WWI])
Pagan Lease
Peoria Flat
Table Mountain Quarry (Table Mountain Plant And Quarries)
Unidentified Au Prospect [16]

Latitude: 37°53'26"N
Longitude: 120°30'20"W
Decimal Degree (lat, lon): 37.890555555556,-120.50555555556

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:

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 Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	281	281	1	183722	1756
Magnesiochromite ()*	Spinel	MgCr₂O₄	281	281	17	183717,183718,183719,183720,183722,183725,183726,183727,183728,183729,183733,183734,183735,183739,183740,183741,183742	311
Magnesite ()*	Calcite	Mg(CO₃)	281	281	1	183722	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	281	281	1	183722	14899
Manganite ()*	Rutile	Mn³⁺O(OH)	281	281	1	183722	770
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	281	281	1	183722	3337
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃	281	281	1	183722	212

8 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00130	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)	Cr	97598	Booker Lease (Booker Lease Occurrence), Beckwith Ranch Mines, Yosemite Junction, Tuolumne Co., California, USA	Booker Lease	Moiser et al. (2012)	USGSSIR2012_5157
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
podchrome-00098	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)	Cr	98085	Phoenix Mine, Peoria Flat, Yosemite Junction, Tuolumne Co., California, USA	Phoenix	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00096	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)	Cr	98145	Richards Mine [2] (Annex Chrome Mine; Rough And Ready Mine [1918]), Peoria Flat, Yosemite Junction, Tuolumne Co., California, USA	Richards	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00097	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)	Cr	98236	Sullivan And Kahl Lease, Peoria Flat, Yosemite Junction, Tuolumne Co., California, USA	Sullivan and Kahl Lease	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00095	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)	Cr	98189	Shafer Lease Occurrence (Pereira Mine [1918]), Ziehlke Claims Group [1948] (Last Chance Claim; Morning Glory Claim; Murphy Lease; Pereira Property; C. M. Quigg Lease On Pereira Property [1918]; C And M Quigg Lease), Peoria Flat, Yosemite Junction, Tuolumne Co., California, USA	Shafer Lease	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00094	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)	Cr	98219	Spotted Fawn Mine (Spotted Fawn Claim; U.S.A. Mine [1918]), Ziehlke Claims Group [1948] (Last Chance Claim; Morning Glory Claim; Murphy Lease; Pereira Property; C. M. Quigg Lease On Pereira Property [1918]; C And M Quigg Lease), Peoria Flat, Yosemite Junction, Tuolumne Co., California, USA	Ziehlke Spotted Fawn	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...