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Spizzicatore Hill, Allumiere, Tolfa Mts District, Rome Province, Latium, Italy

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(Colle dello Spizzicatore, Allumiere, Distretto dei Monti della Tolfa, Roma, Italia)

The Spizzicatore hill is partly occupied by a quarry where the ignimbrite rock is extracted occasionally for road use. The ignimbrite can include volcanic rocks in which one can find different minerals.





References:
- Della Ventura G., Bellatreccia F., Cámara F., Oberti F., Lorand J.P., Parodi G.C., Carlier G., Di Domenico D. (2006): Carbon-bearing cordierite from Allumiere (Tolfa volcanic center, Latium, Italy): occurrence, crystal-structure and FTIR microspectroscopy. Periodico di Mineralogia, 75, 113–126.




Group 1 - Elements
  		• Graphite1.CB.05a
    C
    Group 4 - Oxides and Hydroxides
  		• Ilmenite4.CB.05
    Fe
    2+
     
    		TiO
     
    3
  		• Quartz4.DA.05
    SiO
     
    2
  		• Spinel4.BB.05
    MgAl
     
    2
    		O
     
    4
    Group 9 - Silicates
  		• Almandine9.AD.25
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
  		• Andradite
    var: Melanite    		9.AD.25
    Ca
     
    3
    		Fe
    3+
    2
    		[SiO
     
    4
    		]
     
    3
  		• Biotite9..
  		• Cordierite9.CJ.10
    (Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    5
    		O
     
    18
  		• Sanidine9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Staurolite9.AF.30
    (Fe
    2+
     
    		,Mg,Zn)
     
    1.5-2
    		Al
     
    9
    		[O
     
    6
    		|(OH,O)
     
    2
    		|(SiO
     
    4
    		)
     
    4
    		]
  		• Titanite9.AG.15
    CaTi[O|SiO
     
    4
    		]
  		• Zircon9.AD.30
    Zr[SiO
     
    4
    		]
    Unclassified Minerals
  		• 'Albite-Anorthite Series'-
  		• 'Amphibole Group'-
  		• 'Pyroxene Group'-


    15 entries listed. 11 valid minerals.

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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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 22:48:08