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:
Menlo Park, San Mateo Co., California, USA

mindat Locality ID: 226992
mindat URL: http://www.mindat.org/loc-226992.html

Tectonic Settings:

Total number of sublocalities beneath "Menlo Park, San Mateo Co., California, USA": 7
Total number of bottom-level sublocalities: 6

Number of Child Localities: 1
Child Localities:
Sharon Heights

Latitude: 37°25'20"N
Longitude: 122°12'4"W
Decimal Degree (lat, lon): 37.422222222222,-122.20111111111

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	Clay	Feldspar	Gypsum	None	Not in a structural group	Pyrite	Quartz	Smectite-vermiculite

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 Ca Fe H Hg K Mg N Na O S Si Ti U V

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Clay Feldspar Gypsum None Not in a structural group Pyrite Quartz Smectite-vermiculite

11 IMA Minerals at location:

Alunite ()*	Ammoniojarosite ()*	Anatase ()*	Buddingtonite ()*	Carnotite ()*
Cinnabar ()*	Gypsum ()*	Montmorillonite ()*	Niter ()*	Pyrite ()*
Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	1	175766	966
Ammoniojarosite ()*	Alunite	(NH₄)Fe³⁺₃(SO₄)₂(OH)₆	1	175766	30
Anatase ()*	Not in a structural group	TiO₂	1	175766	2162
Buddingtonite ()*	Feldspar	(NH₄)(AlSi₃)O₈	5	175763,175764,175765,175766,175767	27
Carnotite ()*	None	K₂(UO₂)₂(VO₄)₂·3H₂O	1	175766	1184
Cinnabar ()*	None	HgS	1	175766	2600
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	3	175764,175766,175767	6890
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	5	175763,175764,175765,175766,175767	1508
Niter ()*	None	K(NO₃)	1	175766	181
Pyrite ()*	Pyrite	FeS₂	1	175766	39462
Quartz ()*	Quartz	SiO₂	1	175766	61156

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R061115	Sharon Heights, Menlo Park, San Mateo Co., California, USA	https://rruff.info/R061115

All locality data graciously provided by mindat.org

All age data...