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:
Fallbrook, San Diego Co., California, USA

mindat Locality ID: 215687
mindat URL: http://www.mindat.org/loc-215687.html

Tectonic Settings:

Total number of sublocalities beneath "Fallbrook, San Diego Co., California, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Fallbrook Street
Mammoth Claim
Morro Hill
Unnamed Sillimanite Deposit

Latitude: 33°30'13"N
Longitude: 117°26'26"W
Decimal Degree (lat, lon): 33.503611111111,-117.44055555556

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.

Andalusite	Clay	Clinozoisite	Epidote	Mica	None	Not in a structural group	Tridymite

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 K O Si

Elements from minerals reported directly at this locality: Al H K O Si

Structural Groups for minerals in this locality:
Andalusite Clay Clinozoisite Epidote Mica None Not in a structural group Tridymite

5 IMA Minerals at location:

Andalusite ()*	Epidote ()*	Muscovite ()*	Sillimanite ()*	Tridymite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Andalusite ()*	Andalusite	Al₂SiO₅	0		1310
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	174474	8173
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	0		17380
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	174477	1516
Tridymite ()*	Tridymite	SiO₂	1	174476	458

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
X050064	Fallbrook, San Diego Co., California, USA	https://rruff.info/X050064

All locality data graciously provided by mindat.org

All age data...