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:
Hildreth District, Madera Co., California, USA

Oldest recorded age at locality: 9.95
Youngest recorded age at locality: 9.5

mindat Locality ID: 209211
mindat URL: http://www.mindat.org/loc-209211.html

Tectonic Settings:

Total number of sublocalities beneath "Hildreth District, Madera Co., California, USA": 38
Total number of bottom-level sublocalities: 35

Number of Child Localities: 2
Child Localities:
Hildreth
O'Neals

Latitude: 37°7'34"N
Longitude: 119°39'21"W
Decimal Degree (lat, lon): 37.126111111111,-119.65583333333

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.

Clinozoisite	Copper	Corundum	Epidote	Garnet	None	Quartz	Rhodonite	Scheelite	Spinel

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 Au Ca Fe H Mn O Si W

Elements from minerals reported directly at this locality: Al Ca Fe H O Si

Structural Groups for minerals in this locality:
Clinozoisite Copper Corundum Epidote Garnet None Quartz Rhodonite Scheelite Spinel

8 IMA Minerals at location:

Epidote ()*	Gold ()*	Hematite ()*	Magnetite ()*	Quartz ()*
Rhodonite ()*	Scheelite ()*	Spessartine ()*

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
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	9.95	9.5	0		8173
Gold ()*	Copper	Au	9.95	9.5	21	162122,162123,162125,162127,162128,162132,162133,162134,162137,162138,162141,162142,162144,162146,162150,162152,162154,162155,162156,162157,162158	30554
Hematite ()*	Corundum	Fe₂O₃	9.95	9.5	0		14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	9.95	9.5	0		14899
Quartz ()*	Quartz	SiO₂	9.95	9.5	19	162122,162123,162125,162127,162128,162132,162133,162134,162137,162141,162142,162144,162146,162150,162152,162155,162156,162157,162158	61156
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)			1	162135	969
Scheelite ()*	Scheelite	Ca(WO₄)			1	162140	4894
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃			1	162135	1214

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
	NAVDAT-7575	9.95	9.5	9.5+0.45/-0					7575						81845	Williams Mine, Hildreth, Hildreth District, Madera Co., California, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...