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:
Tujunga, San Gabriel Mts, Los Angeles Co., California, USA

Oldest recorded age at locality: 1205
Youngest recorded age at locality: 1167

mindat Locality ID: 222419
mindat URL: http://www.mindat.org/loc-222419.html

Tectonic Settings:

Total number of sublocalities beneath "Tujunga, San Gabriel Mts, Los Angeles Co., California, USA": 25
Total number of bottom-level sublocalities: 22

Number of Child Localities: 12
Child Localities:
Alder Creek 4 Deposit
Alder Creek 5 Deposit
Alexander Prospect
Beam Smelter Company And Associates Prospect
Black Widow Claim
Bryant Group (Bryant Deposit; Trail Canyons)
Daytonian Deposit (Daytonia Deposit)
Iron Mountain
Mount Gleason
Quartz Hill Deposit
Titan Deposit (Mount Gleason 7; Alder Creek 1; Titan Lode)
Tujunga Canyon

Latitude: 34°20'1"N
Longitude: 118°10'54"W
Decimal Degree (lat, lon): 34.333611111111,-118.18166666667

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	Corundum	None	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: C Fe O Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Corundum None Spinel

4 IMA Minerals at location:

Graphite ()*	Ilmenite ()*	Magnetite ()*	Siderite ()*

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
Graphite ()*	None	C	1205	1167	1	161620	2812
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1205	1167	13	161597,161598,161602,161603,161605,161607,161609,161610,161612,161614,161615,161616,161618	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1205	1167	13	161597,161598,161602,161603,161605,161607,161609,161610,161612,161614,161615,161616,161618	14899
Siderite ()*	Calcite	Fe(CO₃)	1205	1167	1	161621	6417

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
	Bradley_2012_125	1205	1167	1186±19	U/Pb			zircon			Yes	Zircon			28941	San Gabriel Mts, Los Angeles Co., California, USA	Mendenhall Peak	McCauley and Bradley (2014)	10.3749/canmin.52.2.183	CM52_183

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...