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Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Mun. de Aldama, Chihuahua, Mexico

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333 metric tons of U3O8 "breccia pipe"



References:
- Econ Geol (1991) 86:233-248
- Panczner (1987): 136, 392.
- Pearcy, E.C., Prikryl, J.D., Murphy, W.M., and Leslie, B.W. (1994): Alteration of uraninite from the Nopal I deposit, Peña Blanca District, Chihuahua, Mexico, compared to degradation of spent nuclear fuel in the proposed U.S. high-level nuclear waste repository at Yucca Mountain, Nevada. Appl. Geochem.: : 713-732.
- Prikryl, J.D., D.A. Pickett, W.M. Murphy, and E.C. Pearcy (1997): Migration behavior of naturally-occurring radionuclides at the Nopal I uranium deposit, Chihuahua, Mexico. Journal of Contaminant Hydrology, 26, 61-69.
- http://www.swri.org/4org/d20/ghs/PBlanca/mineral.html




Group 2 - Sulphides and Sulfosalts
  		• Pyrite2.EB.05a
    FeS
     
    2
    Group 4 - Oxides and Hydroxides
  		• Becquerelite4.GB.10
    Ca(UO
     
    2
    		)
     
    6
    		O
     
    4
    		(OH)
     
    6
    		 · 8H
     
    2
    		O
  		• Carnotite4.HB.05
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		[VO
     
    4
    		]
     
    2
    		 · 3H
     
    2
    		O
  		• Goethite4.FD.10
    α-Fe
    3+
     
    		O(OH)
  		• Hematite4.CB.05
    Fe
     
    2
    		O
     
    3
  		• Ianthinite4.GA.10
    U
    4+
     
    		(UO
     
    2
    		)
     
    5
    		O
     
    7
    		 · 10H
     
    2
    		O
  		• Ilmenite4.CB.05
    Fe
    2+
     
    		TiO
     
    3
  		• Magnetite4.BB.05
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
  		• Metaschoepite4.GA.05
    UO
     
    3
    		 · 1-2H
     
    2
    		O
  		• Opal4.DA.10
    SiO
     
    2
    		·nH
     
    2
    		O
  		• Quartz4.DA.05
    SiO
     
    2
  		• Schoepite4.GA.05
    (UO
     
    2
    		)
     
    8
    		O
     
    2
    		(OH)
     
    12
    		 · 12H
     
    2
    		O
  		• Uraninite4.DL.05
    UO
     
    2
      var: Pitchblende4.DL.05
    UO
     
    2
    Group 5 - Nitrates and Carbonates
  		• Calcite5.AB.05
    CaCO
     
    3
    Group 7 - Sulphates, Chromates, Molybdates and Tungstates
  		• Alunite7.BC.10
    KAl
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
  		• Jarosite7.BC.10
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
  		• Powellite7.GA.05
    Ca[MoO
     
    4
    		]
  		• Wulfenite ?7.GA.05
    Pb[MoO
     
    4
    		]
    Group 8 - Phosphates, Arsenates and Vanadates
  		• β-Uranophane8.CG.05
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Group 9 - Silicates
  		• Boltwoodite9.AK.15
    (K,Na)(UO
     
    2
    		)[HSiO
     
    4
    		] · 0.5H
     
    2
    		O
  		• Kaolinite9.ED.05
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
  		• Montmorillonite9.EC.40
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
  		• Soddyite9.AK.05
    (UO
     
    2
    		)
     
    2
    		SiO
     
    4
    		·2H
     
    2
    		O
  		• Uranophane9.AK.15
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
  		• Weeksite9.AK.30
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		(Si
     
    2
    		O
     
    5
    		)
     
    3
    		·4H
     
    2
    		O
    Unclassified Minerals
  		• 'Heulandite'-


    27 entries listed. 26 valid minerals.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 28th Nov 2009 15:47:46