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:
San Emigdio Mts, Ventura Co., California, USA

Oldest recorded age at locality: 25
Youngest recorded age at locality: 21

mindat Locality ID: 224013
mindat URL: http://www.mindat.org/loc-224013.html

Tectonic Settings:

Total number of sublocalities beneath "San Emigdio Mts, Ventura Co., California, USA": 132
Total number of bottom-level sublocalities: 102

Number of Child Localities: 10
Child Localities:
Caswell Area
Frazier Mountain District (Fraser Mountain District)
Meiners Oaks
Mount Pinos
Ojai
Sawmill-Badlands Roadless Area Review & Evaluation (RARE) II Area
Sespe Frazier Roadless Area Review & Evaluation (RARE) II Area
Superior Ridge Deposits (White Ledge Peak Deposits)
Ventucopa Area
Ventura County Borate District (Stauffer District)

Latitude: 34°39'18"N
Longitude: 119°10'38"W
Decimal Degree (lat, lon): 34.655,-119.17722222222

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.

Alunite	Analcime	Apatite	Autunite	Calcite	Chalcopyrite	Clay	Copper	Fluorite	Gypsum
Marcasite	Mica	Molybdenite	Natrolite	None	Pyrite	Quartz	Rocksalt	Smectite-vermiculite	Talc

Analcime ()*	Autunite ()*	Becquerelite ()*	Calcite ()*	Carnotite ()*
Chalcopyrite ()*	Colemanite ()*	Fluorapatite ()*	Galena ()*	Gold ()*
Gypsum ()*	Howlite ()*	Hydroboracite ()*	Jarosite ()*	Marcasite ()*
Mesolite ()*	Molybdenite ()*	Montmorillonite ()*	Muscovite ()*	Natrolite ()*
Pyrite ()*	Quartz ()*	Talc ()*	Uraninite ()*

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 B C Ca Cu F Fe H K Mg Mo Na O P Pb S Si U V

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Analcime Apatite Autunite Calcite Chalcopyrite Clay Copper Fluorite Gypsum
Marcasite Mica Molybdenite Natrolite None Pyrite Quartz Rocksalt Smectite-vermiculite Talc

24 IMA Minerals at location:

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
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	25	21	3	183823,183893,183900	1627
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O			2	183877,183879	1272
Becquerelite ()*	None	Ca(UO₂)₆O₄(OH)₆·8H₂O			1	183877	92
Calcite ()*	Calcite	Ca(CO₃)	25	21	1	183893	27770
Carnotite ()*	None	K₂(UO₂)₂(VO₄)₂·3H₂O			3	183877,183878,183881	1184
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			1	183861	27198
Colemanite ()*	None	CaB₃O₄(OH)₃·H₂O	25	21	10	183795,183858,183890,183891,183893,183895,183896,183900,183901,183902	144
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	183793	2740
Galena ()*	Rocksalt	PbS			1	183872	24243
Gold ()*	Copper	Au			5	183819,183830,183861,183873,183875	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	25	21	15	183791,183795,183800,183802,183883,183886,183890,183891,183892,183893,183895,183896,183900,183901,183902	6890
Howlite ()*	None	Ca₂SiB₅O₉(OH)₅			1	183900	36
Hydroboracite ()*	None	CaMg[B₃O₄(OH)₃]₂·3H₂O	25	21	1	183893	42
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆			1	183877	2228
Marcasite ()*	Marcasite	FeS₂			1	183861	5674
Mesolite ()*	Natrolite	Na₂Ca₂(Si₉Al₆)O₃₀·8H₂O			3	183850,183887,183903	425
Molybdenite ()*	Molybdenite	MoS₂			2	183817,183848	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O			1	183877	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	183816	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	25	21	1	183887	1236
Pyrite ()*	Pyrite	FeS₂			1	183861	39462
Quartz ()*	Quartz	SiO₂			2	183861,183877	61156
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			1	183789	3337
Uraninite ()*	Fluorite	UO₂			1	183877	2718

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
	NAVDAT-34021	25	21	23±2					34021						98391	Frazier Mine (Frazier Borax Mine), Lockwood Valley, Lake Of The Woods Area, Ventura County Borate District (Stauffer District), San Emigdio Mts, Ventura Co., California, USA		NAVDAT		NAVDAT
	NAVDAT-34022	25	21	23±2					34022						98391	Frazier Mine (Frazier Borax Mine), Lockwood Valley, Lake Of The Woods Area, Ventura County Borate District (Stauffer District), San Emigdio Mts, Ventura Co., California, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...