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:
Hollow Hills, San Bernardino Co., California, USA

Oldest recorded age at locality: 1780
Youngest recorded age at locality: 95.24

mindat Locality ID: 294487
mindat URL: http://www.mindat.org/loc-294487.html

Tectonic Settings:

Total number of sublocalities beneath "Hollow Hills, San Bernardino Co., California, USA": 6
Total number of bottom-level sublocalities: 5

Number of Child Localities: 1
Child Localities:
Solo District

Latitude: 35°23'16"N
Longitude: 116°1'7"W
Decimal Degree (lat, lon): 35.387777777778,-116.01861111111

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.

None	Quartz

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: O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
None Quartz

1 IMA Minerals at location:

Quartz ()*

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
Quartz ()*	Quartz	SiO₂	1780	95.24	1	171833	61156

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-06115	1780	1400	1590±190	Rb-Sr		whole rock	294487	Hollow Hills, San Bernardino Co., California, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06116	750	750	75	Rb-Sr	initial age disturbed by later metamorphism	sphene	294487	Hollow Hills, San Bernardino Co., California, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06117	776.4	776.4	776.4	Rb-Sr	initial age disturbed by later metamorphism	whole rock	294487	Hollow Hills, San Bernardino Co., California, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06118	95.24	95.24	95.24	Rb-Sr	initial age disturbed by later metamorphism	plagioclase	294487	Hollow Hills, San Bernardino Co., California, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06119	95.24	95.24	95.24	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar	294487	Hollow Hills, San Bernardino Co., California, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...