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:
Frenchman Mountain, Las Vegas District, Clark Co., Nevada, USA

Oldest recorded age at locality: 12.8
Youngest recorded age at locality: 9.7

mindat Locality ID: 63992
mindat URL: http://www.mindat.org/loc-63992.html

Tectonic Settings:

Total number of sublocalities beneath "Frenchman Mountain, Las Vegas District, Clark Co., Nevada, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 36°10'45"N
Longitude: 114°59'53"W
Decimal Degree (lat, lon): 36.179166666667,-114.99805555556

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.

Clay	None

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: F H Li Mg Na O Si

Elements from minerals reported directly at this locality: F H Li Mg Na O Si

Structural Groups for minerals in this locality:
Clay None

1 IMA Minerals at location:

Hectorite ()*

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
Hectorite ()*	Clay	Na_0.3(Mg,Li)₃Si₄O₁₀(F,OH)₂·nH₂O	12.8	9.7	0		19

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
Giersdorf_00000459	12.6	11.2	11.9±0.7	K-Ar			UAKA-65-01		63992	Frenchman Mountain, Las Vegas District, Clark Co., Nevada, USA	Frenchman Mountains	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000460	12.1	10.3	11.2±0.9	K-Ar			UAKA-66-05		63992	Frenchman Mountain, Las Vegas District, Clark Co., Nevada, USA	Frenchman Mountains	Shafiqullah et al. (1980)	AGSD12_201
Scott-NIMM56_30-0001	12.8	11	11.9±0.9	Fission Track	Age of deposition	zircon		Zircon	63992	Frenchman Mountain, Las Vegas District, Clark Co., Nevada, USA	Frenchman Mountain	Koski et al. (1990)	NIMM56_30
Scott-NIMM56_30-0002	11.5	9.7	10.6±0.9	Fission Track	Age of deposition	zircon		Zircon	63992	Frenchman Mountain, Las Vegas District, Clark Co., Nevada, USA	Frenchman Mountain	Koski et al. (1990)	NIMM56_30

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...