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:
Cedar Mountain District, Diablo Range, Alameda Co., California, USA

Oldest recorded age at locality: 161
Youngest recorded age at locality: 161

mindat Locality ID: 212554
mindat URL: http://www.mindat.org/loc-212554.html

Tectonic Settings:

Total number of sublocalities beneath "Cedar Mountain District, Diablo Range, Alameda Co., California, USA": 35
Total number of bottom-level sublocalities: 32

Number of Child Localities: 3
Child Localities:
Cedar Mountain
Lookout Point
Sugarloaf Butte

Latitude: 37°31'53"N
Longitude: 121°37'6"W
Decimal Degree (lat, lon): 37.531388888889,-121.61833333333

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	Feldspar	Garnet	None	Quartz	Rutile	Serpentine	Spinel

Albite ()*	Antigorite ()*	Chromite ()*	Chrysotile ()*	Clinochlore ()*
Hydromagnesite ()*	Magnesiochromite ()*	Magnesite ()*	Pyrolusite ()*	Quartz ()*
Rhodochrosite ()*	Uvarovite ()*

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 Na O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Chlorite Clay Feldspar Garnet None Quartz Rutile Serpentine Spinel

12 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
Albite ()*	Feldspar	Na(AlSi₃O₈)	161	161	2	150389,150395	8803
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	161	161	1	150395	708
Chromite ()*	Spinel	Fe²⁺Cr₂O₄			6	150394,150397,150399,150400,150406,150407	3902
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	161	161	1	150395	951
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	161	161	2	150389,150395	1756
Hydromagnesite ()*	None	Mg₅(CO₃)₄(OH)₂·4H₂O			2	150408,150409	341
Magnesiochromite ()*	Spinel	MgCr₂O₄	161	161	4	150389,150390,150391,150395	311
Magnesite ()*	Calcite	Mg(CO₃)			6	150386,150388,150398,150402,150413,150418	1487
Pyrolusite ()*	Rutile	MnO₂			1	150396	3106
Quartz ()*	Quartz	SiO₂	161	161	3	150389,150395,150396	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)			1	150416	1711
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃	161	161	2	150389,150395	212

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
	podchrome-00001	161	161	Middle Jurassic										Cr	73398	Mendenhall No. 1 Mine (Cedar Mountain Mine; Mendenhall Chrome Mines; Mendenhall Mine; Newman Mine), Cedar Mountain, Cedar Mountain District, Diablo Range, Alameda Co., California, USA	Newman	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...