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:
Matchless Mine, Calamity Mesa, Uravan District, Mesa Co., Colorado, USA

Oldest recorded age at locality: 500
Youngest recorded age at locality: 80

mindat Locality ID: 115884
mindat URL: http://www.mindat.org/loc-115884.html

Tectonic Settings:

Total number of sublocalities beneath "Matchless Mine, Calamity Mesa, Uravan District, Mesa Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°37'10"N
Longitude: 108°52'19"W
Decimal Degree (lat, lon): 38.619444444444,-108.87194444444

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.

Diaspore	Hewettite	None	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: Al Ca Fe H O Si U V

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

Structural Groups for minerals in this locality:
Diaspore Hewettite None Zircon

5 IMA Minerals at location:

Coffinite ()*	Doloresite ()*	Metahewettite ()*	Montroseite ()*	Sherwoodite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Coffinite ()*	Zircon	U(SiO₄)·nH₂O	96	80	566
Doloresite ()*	None	V⁴⁺₃O₄(OH)₄	96	80	23
Metahewettite ()*	Hewettite	CaV⁵⁺₆O₁₆·3H₂O	96	80	56
Montroseite ()*	Diaspore	(V³⁺,Fe²⁺,V⁴⁺)O(OH)	96	80	136
Sherwoodite ()*	None	Ca_5.5(AlV⁴⁺V⁵⁺₁₂O₃₉)·28H₂O	96	80	20

3 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_00000608	80	80	80	238U-206U	Age is applied to the primary U minerals at this locality		coffinite	SS187	Coffinite	Coffinite	115884	Matchless Mine, Calamity Mesa, Uravan District, Mesa Co., Colorado, USA	Matchless 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 Matchless Mine
Giersdorf_00000609	96	96	96	235U-207Pb	Age is applied to the primary U minerals at this locality		coffinite	SS187	Coffinite	Coffinite	115884	Matchless Mine, Calamity Mesa, Uravan District, Mesa Co., Colorado, USA	Matchless 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 Matchless Mine
Giersdorf_00000610	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	SS187	Coffinite	Coffinite	115884	Matchless Mine, Calamity Mesa, Uravan District, Mesa Co., Colorado, USA	Matchless 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 Matchless Mine

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...