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:
La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA

Oldest recorded age at locality: 650
Youngest recorded age at locality: 70

mindat Locality ID: 5934
mindat URL: http://www.mindat.org/loc-5934.html

Tectonic Settings:

Total number of sublocalities beneath "La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°39'1"N
Longitude: 109°2'14"W
Decimal Degree (lat, lon): 38.650277777778,-109.03722222222

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.

Fluorite	None	Pascoite	Ramsdellite	Zircon

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: Ca H O Si U V

Elements from minerals reported directly at this locality: Ca H O Si U V

Structural Groups for minerals in this locality:
Fluorite None Pascoite Ramsdellite Zircon

5 IMA Minerals at location:

Coffinite ()*	Doloresite ()*	Paramontroseite ()*	Pascoite ()*	Uraninite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Coffinite ()*	Zircon	U(SiO₄)·nH₂O	110	70	566
Doloresite ()*	None	V⁴⁺₃O₄(OH)₄	110	70	23
Paramontroseite ()*	Ramsdellite	VO₂	110	70	39
Pascoite ()*	Pascoite	Ca₃V⁵⁺₁₀O₂₈·17H₂O	110	70	78
Uraninite ()*	Fluorite	UO₂	110	70	2718

9 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	Dated Mineral	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Giersdorf_00000611	70	70	70	238U-206U	Age is applied to the primary U minerals at this locality		coffinite	SS178	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	U238-Pb206 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000612	87	87	87	235U-207Pb	Age is applied to the primary U minerals at this locality		coffinite	SS178	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	U235-Pb207 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000613	650	650	650	207Pb-206Pb	The Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methods	low	coffinite	SS178	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Pb207-Pb206 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000614	80	80	80	238U-206U	Age is applied to the primary U minerals at this locality		coffinite	SS108	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	U238-Pb206 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000615	93	93	93	235U-207Pb	Age is applied to the primary U minerals at this locality		coffinite	SS108	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	U235-Pb207 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000616	420	420	420	207Pb-206Pb	The Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methods	low	coffinite	SS108	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Pb207-Pb206 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000617	90	90	90	238U-206U	Age is applied to the primary U minerals at this locality		coffinite	SS65	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	U238-Pb206 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000618	110	110	110	235U-207Pb	Age is applied to the primary U minerals at this locality		coffinite	SS65	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	U235-Pb207 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine
Giersdorf_00000619	500	500	500	207Pb-206Pb	The Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methods	low	coffinite	SS65	Coffinite	Coffinite, Uraninite	5934	La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA	La Sal No. 2 Mine	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Pb207-Pb206 Age given by the USGS for the Morrison Formation found at the La Sal No. 2 Mine

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...