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:
Mesa Top No. 7 Mine (Moe Mine; Mesa Top No. 18 Mine; Mesa Top No. 20 Mine), Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA

Oldest recorded age at locality: 850
Youngest recorded age at locality: 3

mindat Locality ID: 48105
mindat URL: http://www.mindat.org/loc-48105.html

Tectonic Settings:

Total number of sublocalities beneath "Mesa Top No. 7 Mine (Moe Mine; Mesa Top No. 18 Mine; Mesa Top No. 20 Mine), Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 35°20'25"N
Longitude: 107°49'1"W
Decimal Degree (lat, lon): 35.340277777778,-107.81694444444

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.

Amorphous	Fluorite	None	Zippeite	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: H K Mo O S Si U

Elements from minerals reported directly at this locality: H K Mo O S Si U

Structural Groups for minerals in this locality:
Amorphous Fluorite None Zippeite Zircon

5 IMA Minerals at location:

Coffinite ()*	Ilsemannite ()*	Jordisite ()*	Uraninite ()*	Zippeite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Coffinite ()*	Zircon	U(SiO₄)·nH₂O	260	3	566
Ilsemannite ()*	None	Mo₃O₈·nH₂O (?)	260	3	123
Jordisite ()*	Amorphous	MoS₂	260	3	102
Uraninite ()*	Fluorite	UO₂	260	73	2718
Zippeite ()*	Zippeite	K₂[(UO₂)₄(SO₄)₂O₂(OH)₂](H₂O)₄	260	3	175

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000589	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000590	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000591	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000592	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000593	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000594	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000595	Urano-organic ore disseminated throughout the Morrison sandstones of Jurassic Age. Additionally, ore is found in the Todilto Limestone and Westwater Canyon Sandstone. Todilto Limestone is lacustrine in nature, suggesting a hydrothermal origin.
Giersdorf_00000701	The Jackpile-Paguate mine is a uranium prospect which pulls its material from the Morrisson formation, particularly the Jackpile member of the formation from which it derives its name. The uranium resources are primarily found in lenticular pockets in the host sandstone of the Jackpile Member.
Giersdorf_00000702	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.
Giersdorf_00000703	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.
Giersdorf_00000704	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.
Giersdorf_00000705	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.
Giersdorf_00000706	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.
Giersdorf_00000707	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.
Giersdorf_00000708	The Grants Uranium Mining District is a large area of economically attractive uranium deposits which are derived from the Morrison formation and the Todilto Limestone formation.

15 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	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Giersdorf_00000701	115	110	115-110	U-Pb					Yes			U	33622	Jackpile Mine (Jackpile-Paguate), Laguna District, Cibola Co., New Mexico, USA	Jackpile-Paguate Mine	McLemore (2011)	10.1.1.688.1172	TMG48_23	Age of uranium mineralization in the Jackpile Member of the Morrisson Formation
Giersdorf_00000702	155	150	155-150	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Age of the uranium mineralization in the Todilto limestone associated with the Morrison formation.
Giersdorf_00000703	148	130	148-130	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Age of uranium mineralization in the Westwater Canyon Member of the Morrisson Formation
Giersdorf_00000704	130	115	130-115	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Estimated age of the Uranium mineralization in the Brushy Basin Member of the Morrison Formation
Giersdorf_00000705	130	115	130-115	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Estimated age of the Uranium mineralization in the Poison Canyon Member of the Morrison Formation
Giersdorf_00000706	106	80	106-80	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Age of a redistribution event affecting the Dakota, Brushy Basin, and Westwater Canyon Members of the Morrison Formation
Giersdorf_00000707	12	3	12-3	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Age of a redistribution event affecting the Dakota, Brushy Basin, and Westwater Canyon Members of the Morrison Formation
Giersdorf_00000708	7	3	7-3	U-Pb					Yes			U	22034	Grants District, McKinley Co., New Mexico, USA	Grants Uranium Mining District	McLemore (2011)	10.1.1.688.1172	TMG48_23	Age of a secondary depositional event in the Todilto Limestone
Giersdorf_00000589	260	250	255±5	238U-206U			uraninite	K-179b	Yes	Uraninite	Uraninite	U	262609	Haystack Butte (Haystack Mountain), Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for U238-Pb206 analysis
Giersdorf_00000590	180	170	175±5	235U-207Pb			uraninite	K-179b	Yes	Uraninite	Uraninite	U	262609	Haystack Butte (Haystack Mountain), Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for U235-Pb207 analysis
Giersdorf_00000591	180	140	160±20	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	uraninite	K-179c	Yes	Uraninite	Uraninite	U	262609	Haystack Butte (Haystack Mountain), Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for Pb207-Pb206 analysis
Giersdorf_00000592	555	485	520±35	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	uraninite	K-194a	Yes	Uraninite	Uraninite	U	48060	Section 33 Mine, Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for Pb207-Pb206 analysis
Giersdorf_00000593	83	73	78±5	238U-206U			uraninite	K-194b	Yes	Uraninite	Uraninite	U	48060	Section 33 Mine, Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for U238-Pb206 analysis
Giersdorf_00000594	113	101	107±6	235U-207Pb			uraninite	K-194b	Yes	Uraninite	Uraninite	U	48060	Section 33 Mine, Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for U235-Pb207 analysis
Giersdorf_00000595	850	790	820±30	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	uraninite	K-194b	Yes	Uraninite	Uraninite	U	48060	Section 33 Mine, Ambrosia Lake Sub-district, Grants District, McKinley Co., New Mexico, USA	Ambrosia Lake	Miller et al. (1963)	10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2	GSAB74_609	Age given for Pb207-Pb206 analysis

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...