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:
Sierra Pelona Mts (Sierra Pelona Range), Los Angeles Co., California, USA

Oldest recorded age at locality: 21.1
Youngest recorded age at locality: 18.1

mindat Locality ID: 222427
mindat URL: http://www.mindat.org/loc-222427.html

Tectonic Settings:

Total number of sublocalities beneath "Sierra Pelona Mts (Sierra Pelona Range), Los Angeles Co., California, USA": 98
Total number of bottom-level sublocalities: 78

Number of Child Localities: 6
Child Localities:
Alpine
Castaic
Caswell
Green Valley
Ritter Ranch
Three Points

Latitude: 34°36'19"N
Longitude: 118°26'53"W
Decimal Degree (lat, lon): 34.605277777778,-118.44805555556

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.

Amphibole	Analcime	Beryl	Calcite	Clay	Clinozoisite	Copper	Epidote	Feldspar	Gypsum
Mica	Natrolite	None	Not in a structural group	Quartz	Rhodonite	Rocksalt	Rutile	Serpentine	Smectite-vermiculite
Spinel	Talc	Zircon

Actinolite ()*	Albite ()*	Analcime ()*	Antigorite ()*	Beidellite ()*
Chromite ()*	Clinozoisite ()*	Cordierite ()*	Galena ()*	Gold ()*
Graphite ()*	Gypsum ()*	Laumontite ()*	Magnesite ()*	Muscovite ()*
Natrolite ()*	Pyrolusite ()*	Quartz ()*	Rhodonite ()*	Sillimanite ()*
Silver ()*	Talc ()*	Thorite ()*

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: Ag Al Au C Ca Cr Fe H K Mg Mn Na O Pb S Si Th

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Analcime Beryl Calcite Clay Clinozoisite Copper Epidote Feldspar Gypsum
Mica Natrolite None Not in a structural group Quartz Rhodonite Rocksalt Rutile Serpentine Smectite-vermiculite
Spinel Talc Zircon

23 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			2	161885,161887	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)			1	161842	8803
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O			1	161892	1627
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			1	161875	708
Beidellite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3Al₂(Si,Al)₄O₁₀(OH)₂·nH₂O			1	161818	85
Chromite ()*	Spinel	Fe²⁺Cr₂O₄			1	161838	3902
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			2	161842,161854	1025
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈			1	161839	1008
Galena ()*	Rocksalt	PbS			1	161843	24243
Gold ()*	Copper	Au			4	161811,161813,161826,161830	30554
Graphite ()*	None	C			5	161816,161818,161848,161862,161879	2812
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	21.1	18.1	2	161805,161812	6890
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O			1	161892	1271
Magnesite ()*	Calcite	Mg(CO₃)			2	161876,161882	1487
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	161839	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O			1	161892	1236
Pyrolusite ()*	Rutile	MnO₂			1	161881	3106
Quartz ()*	Quartz	SiO₂			1	161843	61156
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)			1	161881	969
Sillimanite ()*	Not in a structural group	Al₂SiO₅			3	161816,161818,161825	1516
Silver ()*	Copper	Ag			1	161843	5186
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			8	161839,161840,161850,161851,161861,161885,161887,161888	3337
Thorite ()*	Zircon	Th(SiO₄)			1	161820	1006

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-31418	21.1	18.1	19.6±1.5				whole rock	31418						81446	Sheba Fertilizer Deposit, Alpine, Sierra Pelona Mts (Sierra Pelona Range), Los Angeles Co., California, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...