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:
Echo Cliffs (Base Of Echo Cliffs Bentonite Deposit; Echo Cliffs Clay Deposit), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USA

Oldest recorded age at locality: 1480
Youngest recorded age at locality: 94

mindat Locality ID: 47213
mindat URL: http://www.mindat.org/loc-47213.html

Tectonic Settings:

Total number of sublocalities beneath "Echo Cliffs (Base Of Echo Cliffs Bentonite Deposit; Echo Cliffs Clay Deposit), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 36°24'45"N
Longitude: 111°31'30"W
Decimal Degree (lat, lon): 36.4125,-111.525

AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe 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.

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 H Na O Si 

Elements from minerals reported directly at this locality: Al Ca H Na O Si 

Structural Groups for minerals in this locality: 
ClayNoneSmectite-vermiculite

1 IMA Minerals at location:
Beidellite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Beidellite  (*)Clay Smectite-vermiculite(Na,Ca)0.3Al2(Si,Al)4O10(OH)2·nH2O22394085



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Giersdorf_00000574Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000575Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000576Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000577Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000578Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000579Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000580Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000581Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000582Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000583Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000584Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones
Giersdorf_00000585Pitchblende (uraninite) ore disseminated through Upper Triassic Sandstones


12 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Giersdorf_00000577132124128±4238U-206U uraniniteK-178 YesUraniniteUraniniteU43065Alyce Tolino Mine, Cameron, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U238-Pb206 analysis
Giersdorf_00000578223213218±5235U-207Pb uraniniteK-178 YesUraniniteUraniniteU43065Alyce Tolino Mine, Cameron, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U235-Pb207 analysis
Giersdorf_00000579148013201400±80207Pb-206PbThe Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methodslowuraniniteK-178 YesUraniniteUraniniteU43065Alyce Tolino Mine, Cameron, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for Pb207-Pb206 analysis
Giersdorf_00000574181161171±10238U-206U uraniniteK-151 YesUraniniteUraniniteU19006Huskon No. 7 Mine (Huskon No. 7 - Yazzie No. 102 Mine; Yazzie No. 102 Mine), Huskon Mines, Cameron, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U238-Pb206 analysis
Giersdorf_00000575217197207±10235U-207Pb uraniniteK-151 YesUraniniteUraniniteU19006Huskon No. 7 Mine (Huskon No. 7 - Yazzie No. 102 Mine; Yazzie No. 102 Mine), Huskon Mines, Cameron, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U235-Pb207 analysis
Giersdorf_00000576730650690±40207Pb-206PbThe Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methodslowuraniniteK-151 YesUraniniteUraniniteU19006Huskon No. 7 Mine (Huskon No. 7 - Yazzie No. 102 Mine; Yazzie No. 102 Mine), Huskon Mines, Cameron, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for Pb207-Pb206 analysis
Giersdorf_000005801029498±4238U-206U uraniniteK-183a YesUraniniteUraniniteU52997Ramco No. 20 Mine (Ramco No. 20 Claim), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U238-Pb206 analysis
Giersdorf_00000581155145150±5235U-207Pb uraniniteK-183a YesUraniniteUraniniteU52997Ramco No. 20 Mine (Ramco No. 20 Claim), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U235-Pb207 analysis
Giersdorf_00000583166158162±4238U-206U uraniniteK-183b YesUraniniteUraniniteU52997Ramco No. 20 Mine (Ramco No. 20 Claim), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U238-Pb206 analysis
Giersdorf_00000582117010901130±40207Pb-206PbThe Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methodslowuraniniteK-183a YesUraniniteUraniniteU52997Ramco No. 20 Mine (Ramco No. 20 Claim), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for Pb207-Pb206 analysis
Giersdorf_00000584200190195±5235U-207Pb uraniniteK-183b YesUraniniteUraniniteU52997Ramco No. 20 Mine (Ramco No. 20 Claim), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for U235-Pb207 analysis
Giersdorf_00000585830730780±50207Pb-206PbThe Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methodslowuraniniteK-183b YesUraniniteUraniniteU52997Ramco No. 20 Mine (Ramco No. 20 Claim), Cameron Area, Cameron Mining District, Coconino Co., Arizona, USACameronMiller et al. (1963)10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2GSAB74_609Age given for Pb207-Pb206 analysis


SampleSource LocalityReference URL


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