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:
E. L. Cord Shaft (Jackie; Uncle Ben; Pasco; Jen), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA

Oldest recorded age at locality: 510
Youngest recorded age at locality: 83

mindat Locality ID: 181354
mindat URL: http://www.mindat.org/loc-181354.html

Tectonic Settings:

Total number of sublocalities beneath "E. L. Cord Shaft (Jackie; Uncle Ben; Pasco; Jen), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°14'29"N
Longitude: 109°17'1"W
Decimal Degree (lat, lon): 38.241388888889,-109.28361111111

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	Molybdenite	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: Mo O S U

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

Structural Groups for minerals in this locality:
Fluorite Molybdenite None

2 IMA Minerals at location:

Molybdenite ()*	Uraninite ()*

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
Molybdenite ()*	Molybdenite	MoS₂	213	198	0		5800
Uraninite ()*	Fluorite	UO₂	213	198	0		2718

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000553	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000554	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000555	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000556	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000557	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000558	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000559	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000560	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000561	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000562	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000563	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000564	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000565	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000566	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000567	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000568	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000569	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000570	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000571	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000572	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000573	Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones

21 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_00000565	87	83	85±2	238U-206U			uraninite	K-174	Yes	Uraninite	Uraninite	U	37454	Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000566	99	93	96±3	235U-207Pb			uraninite	K-174	Yes	Uraninite	Uraninite	U	37454	Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000567	449	381	415±34	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-174	Yes	Uraninite	Uraninite	U	37454	Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000562	117	105	111±6	238U-206U			uraninite	K-177	Yes	Uraninite	Uraninite	U	38507	Big Buck Mine (Standard), Casa Colorado Rock, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000563	120	108	114±6	235U-207Pb			uraninite	K-177	Yes	Uraninite	Uraninite	U	38507	Big Buck Mine (Standard), Casa Colorado Rock, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000564	235	175	205±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-177	Yes	Uraninite	Uraninite	U	38507	Big Buck Mine (Standard), Casa Colorado Rock, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000559	212	198	205±7	238U-206U			uraninite	K-167		Uraninite	Uraninite	U	181354	E. L. Cord Shaft (Jackie; Uncle Ben; Pasco; Jen), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000560	213	199	206±7	235U-207Pb			uraninite	K-167		Uraninite	Uraninite	U	181354	E. L. Cord Shaft (Jackie; Uncle Ben; Pasco; Jen), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000561	269	203	236±33	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-167		Uraninite	Uraninite	U	181354	E. L. Cord Shaft (Jackie; Uncle Ben; Pasco; Jen), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000568	130	118	124±6	238U-206U			uraninite	K-184a	Yes	Uraninite	Uraninite	U	181973	Ike - Nixon Shaft, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000569	140	126	133±7	235U-207Pb			uraninite	K-184a	Yes	Uraninite	Uraninite	U	181973	Ike - Nixon Shaft, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000570	307	247	277±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-184a	Yes	Uraninite	Uraninite	U	181973	Ike - Nixon Shaft, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000571	96	86	91±5	238U-206U			uraninite	K-184b	Yes	Uraninite	Uraninite	U	181973	Ike - Nixon Shaft, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000572	100	90	95±5	235U-207Pb			uraninite	K-184b	Yes	Uraninite	Uraninite	U	181973	Ike - Nixon Shaft, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000573	275	215	245±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-184b	Yes	Uraninite	Uraninite	U	181973	Ike - Nixon Shaft, Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000553	197	183	190±7	238U-206U			uraninite	K-152	Yes	Uraninite	Uraninite	U	38514	Mi Vida Mine (Utex Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000554	207	193	200±7	235U-207Pb			uraninite	K-152	Yes	Uraninite	Uraninite	U	38514	Mi Vida Mine (Utex Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000555	425	355	390±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-152	Yes	Uraninite	Uraninite	U	38514	Mi Vida Mine (Utex Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000556	192	182	187±5	238U-206U			uraninite	K-169	Yes	Uraninite	Uraninite	U	38514	Mi Vida Mine (Utex Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000557	212	202	207±5	235U-207Pb			uraninite	K-169	Yes	Uraninite	Uraninite	U	38514	Mi Vida Mine (Utex Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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_00000558	510	450	480±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-169	Yes	Uraninite	Uraninite	U	38514	Mi Vida Mine (Utex Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA	Libson Valley	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...