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Point of Rocks Quarry, Point of Rocks Mesa (Pecks Mesa), Springer, Colfax Co., New Mexico, USA

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A phonolite sill, consisting of alkali feldspar, zeolites and nepheline, which caps a mesa of olivine basalts and Cretaceous sedimentary rocks.

Refs.:
Rocks & Min.: 60:229
Tschernich, R. (1992): Zeolites of the World, 67
DeMark, R. S. (1984): Minerals of Point of Rocks, New Mexico. Mineral. Record 15, 150-156.
http://www.koeln.netsurf.de/~w.steffens/point.htm





 Map Reference: 36°25'N , 104°9'W

This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Group 2 - Sulphides and Sulfosalts
  		• Galena2.CD.10
    PbS
  		• Pyrrhotite2.CC.10
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
  		• Rasvumite2.FB.20
    KFe
     
    2
    		S
     
    3
  		• Sphalerite2.CB.05a
    (Zn,Fe
    2+
     
    		)S
    Group 3 - Halides
  		• Cryolite3.CB.15
    Na
     
    3
    		[AlF
     
    6
    		]
  		• Fluorite3.AB.25
    CaF
     
    2
  		• Villiaumite3.AA.20
    NaF
    Group 4 - Oxides and Hydroxides
  		• Birnessite ?4.FL.45
    (Na,Ca)
     
    0.5
    		(Mn
    4+
     
    		,Mn
    3+
     
    		)
     
    2
    		O
     
    4
    		 · 1.5H
     
    2
    		O
  		• Hematite4.CB.05
    Fe
     
    2
    		O
     
    3
  		• Magnetite4.BB.05
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
  		• Opal4.DA.10
    SiO
     
    2
    		·nH
     
    2
    		O
      var: Opal-AN4.DA.10
    SiO
     
    2
    		·nH
     
    2
    		O
  		• Pyrochlore4.DH.15
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
  		• Pyrophanite4.CB.05
    Mn
    2+
     
    		TiO
     
    3
  		• Quartz4.DA.05
    SiO
     
    2
    Group 5 - Nitrates and Carbonates
  		• Aragonite5.AB.15
    CaCO
     
    3
  		• Brenkite5.BC.05
    Ca
     
    2
    		[F
     
    2
    		|CO
     
    3
    		]
  		• Calcite5.AB.05
    CaCO
     
    3
  		• Rhodochrosite5.AB.05
    MnCO
     
    3
  		• Thermonatrite5.CB.05
    Na
     
    2
    		CO
     
    3
    		·H
     
    2
    		O
  		• Thorbastnäsite5.BD.20a
    Th(Ca,Ce)(CO
     
    3
    		)
     
    2
    		F
     
    2
    		·3H
     
    2
    		O
  		• Trona5.CB.15
    Na
     
    3
    		H(CO
     
    3
    		)
     
    2
    		·2H
     
    2
    		O
    Group 7 - Sulphates, Chromates, Molybdates and Tungstates
  		• Baryte7.AD.35
    BaSO
     
    4
  		• Kogarkoite7.BD.15
    Na
     
    3
    		[F|SO
     
    4
    		]
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Apatite-(CaF)8.BN.05
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
      var: Carbonate-rich Apatite-(CaF)8.BN.05
    Ca
     
    5
    		[(F,O)|(PO
     
    4
    		,CO
     
    3
    		)
     
    3
    		]
    Group 9 - Silicates
  		• Aegirine9.DA.25
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
  		• Albite9.FA.35
    Na[AlSi
     
    3
    		O
     
    8
    		]
  		• Analcime9.GB.05
    Na
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
  		• Cancrinite9.FB.05
    Na
     
    6
    		Ca
     
    2
    		[(CO
     
    3
    		)
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
  		• Catapleiite ?9.CA.15
    Na
     
    2
    		Zr[Si
     
    3
    		O
     
    9
    		]·2H
     
    2
    		O
  		• Eudialyte9.CO.10
    Na
     
    15
    		Ca
     
    6
    		(Fe
    2+
     
    		,Mn
    2+
     
    		)
     
    3
    		Zr
     
    3
    		[Si
     
    25
    		O
     
    73
    		](O,OH,H
     
    2
    		O)
     
    3
    		(OH,Cl)
     
    2
  		• Gonnardite9.GA.05
    Na
     
    2
    		Ca[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		]
     
    2
    		 · 7H
     
    2
    		O
  		• Kenyaite9.HA.10
    Na
     
    2
    		Si
     
    22
    		O
     
    41
    		(OH)
     
    8
    		·6H
     
    2
    		O
  		• Kupletskite9.DC.05
    (K,Na)
     
    3
    		(Mn,Fe)
     
    7
    		Ti
     
    2
    		Si
     
    8
    		O
     
    26
    		(OH)
     
    4
    		F
  		• Lorenzenite9.DB.10
    Na
     
    2
    		Ti
     
    2
    		[O
     
    3
    		|Si
     
    2
    		O
     
    6
    		]
  		• Lovdarite9.GF.15
    (Na,K,Ca)
     
    4
    		(Be,Al)
     
    2
    		Si
     
    6
    		O
     
    16
    		·4H
     
    2
    		O
  		• Manganoneptunite9.EH.05
    Na
     
    2
    		KLi(Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		Ti
     
    2
    		[Si
     
    8
    		O
     
    24
    		]
  		• Microcline9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Mosandrite ?9.BE.20
    Ti(☐,Ca,Na)
     
    3
    		Ca
     
    4
    		(Si
     
    2
    		O
     
    7
    		)
     
    2
    		[H
     
    2
    		,OH,F]
     
    4
    		· ~1H
     
    2
    		O
  		• Natrolite9.GA.05
    Na
     
    2
    		[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		] · 2H
     
    2
    		O
  		• Nepheline9.FA.05
    (Na,K)[AlSiO
     
    4
    		]
  		• Neptunite9.EH.05
    Na
     
    2
    		KLi(Fe
    2+
     
    		,Mn
    2+
     
    		)
     
    2
    		Ti
     
    2
    		[Si
     
    8
    		O
     
    24
    		]
  		• Paranatrolite9.GA.05
    Na
     
    2
    		Al
     
    2
    		Si
     
    3
    		O
     
    10
    		·3H
     
    2
    		O
  		• Pectolite9.DG.05
    NaCa
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
  		• Polylithionite9.EC.20
    KLi
     
    2
    		Al[(F,OH)
     
    2
    		|Si
     
    4
    		O
     
    10
    		]
  		• Rosenbuschite9.BE.22
    (Ca,Na)
     
    3
    		(Zr,Ti)[O|F|Si
     
    2
    		O
     
    7
    		]
  		• Searlesite9.EF.15
    NaBSi
     
    2
    		O
     
    5
    		(OH)
     
    2
  		• Sodalite9.FB.10
    Na
     
    8
    		[Cl
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
  		• Steenstrupine-(Ce) ?9.CK.20
    Na
     
    14
    		Mn
    2+
    2
    		(Fe
    3+
     
    		,Mn
    3+
     
    		)
     
    2
    		Ce
     
    6
    		(Zr,Th)[(OH)
     
    2
    		|HPO
     
    4
    		|(PO
     
    4
    		)
     
    6
    		|(Si
     
    6
    		O
     
    18
    		)
     
    2
    		]·2H
     
    2
    		O
  		• Sérandite9.DG.05
    Na(Mn
    2+
     
    		,Ca)
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
  		• Tetranatrolite9..
  		• Thorite9.AD.30
    (Th,U)[SiO
     
    4
    		]
  		• Titanite9.AG.15
    CaTi[O|SiO
     
    4
    		]
  		• Vishnevite9.FB.05
    (Na,K)
     
    8
    		[(SO
     
    4
    		,CO
     
    3
    		)|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    Unclassified Minerals
  		• 'Ancylite'-
  		• 'Chabazite'-
  		• 'Tundrite'-


    58 entries listed. 54 valid minerals.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in New Mexico, USA 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: 26th Nov 2009 08:02:23