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Alloriite

Formula:
(Na,Ca,K)
 
26
Ca
 
4
[Cl
 
6
|(SO
 
4
)
 
6
|(Al
 
6
Si
 
6
O
 
24
)
 
4
]
System:TrigonalColour:Colourless to pale violet
Name:For Roberto Allori (b. 1933), Italian amateur mineralogist and collector, who found the mineral.


Cancrinite Group.

Classification of Alloriite

IMA status:Approved 2006
Strunz 8th edition ID:8/J.09-92
Nickel-Strunz 10th (pending) edition ID:9.FB.05

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
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Type Occurrence of Alloriite

Type Locality:Mt Cavalluccio, Sacrofano Caldera, Sacrofano, Campagnano di Roma, Rome Province, Latium, Italy
General Appearance of Type Material:Tabular to stout, six-sided prismatic crystals
Associated Minerals at type locality:
SanidineBiotiteAndradite

Physical Properties of Alloriite

Colour:Colourless to pale violet

Crystallography of Alloriite

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:P3 1c
Cell Parameters:a = 12.892Å, c = 21.34Å
Ratio:a:c = 1 : 1.655
Unit Cell Volume:V 3,071.61 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
11.3 (70)
4.85 (90)
4.03 (60)
3.76 (80)
3.68 (70)
3.33 (100)
2.795 (60)

Chemical Properties of Alloriite

Formula:
(Na,Ca,K)
 
26
Ca
 
4
[Cl
 
6
|(SO
 
4
)
 
6
|(Al
 
6
Si
 
6
O
 
24
)
 
4
]
Essential elements:
All elements listed in formula:Al, Ca, Cl, K, Na, O, S, Si

Relationship of Alloriite to other Species

Related to:
  • Cancrinite Group
  • Related Minerals - Nickel-Strunz Grouping):
    9.FB.05Afghanite
    (Na,Ca,K)
     
    8
    [(Cl
     
    2
    ,SO
     
    4
    ,CO
     
    3
    )
     
    3
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 0.5H
     
    2
    O
    9.FB.05Bystrite
    (Na,K)
     
    7
    Ca[(S
     
    3
    )
     
    1.5
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · H
     
    2
    O
    9.FB.05Cancrinite
    Na
     
    6
    Ca
     
    2
    [(CO
     
    3
    )
     
    2
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 2H
     
    2
    O
    9.FB.05Cancrisilite
    Na
     
    7
    [CO
     
    3
    |Al
     
    5
    Si
     
    7
    O
     
    24
    ] · 3H
     
    2
    O
    9.FB.05Davyne
    (Na,K)
     
    6
    Ca
     
    2
    [(Cl
     
    2
    ,SO
     
    4
    )
     
    2
    |Al
     
    6
    Si
     
    6
    SO
     
    24
    ]
    9.FB.05Franzinite
    (Na,K)
     
    6
    Ca
     
    2
    [(SO
     
    4
    )
     
    2
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 0.5H
     
    2
    O
    9.FB.05Giuseppettite
    (Na,K,Ca)
     
    7-8
    [(SO
     
    4
    ,Cl)
     
    1-2
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ]
    9.FB.05Hydroxycancrinite
    Na
     
    8
    [(OH)
     
    2
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 2H
     
    2
    O
    9.FB.05Liottite
    (Na,K)
     
    16
    Ca
     
    8
    [Cl
     
    4
    |(SO
     
    4
    )
     
    5
    |(Al
     
    6
    Si
     
    6
    O
     
    24
    )
     
    3
    ]
    9.FB.05Microsommite
    Na
     
    4
    K
     
    2
    Ca
     
    2
    [Cl
     
    2
    |SO
     
    4
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ]
    9.FB.05Pitiglianoite
    Na
     
    6
    K
     
    2
    [SO
     
    4
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 2H
     
    2
    O
    9.FB.05Quadridavyne
    (Na,K)
     
    6
    Ca
     
    2
    [Cl
     
    4
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ]
    9.FB.05Sacrofanite
    (Na,Ca,K)
     
    9
    [{(OH)
     
    2
    ,SO
     
    4
    ,CO
     
    3
    ,Cl
     
    2
    }
     
    3
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 0.5H
     
    2
    O
    9.FB.05Tounkite
    (Na,Ca,K)
     
    8
    [Cl|(SO
     
    4
    )
     
    2
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ] · H
     
    2
    O
    9.FB.05Vishnevite
    (Na,K)
     
    8
    [(SO
     
    4
    ,CO
     
    3
    )|Al
     
    6
    Si
     
    6
    O
     
    24
    ] · 2H
     
    2
    O
    9.FB.05Marinellite
    (Na,K)
     
    42
    Ca
     
    6
    [Cl
     
    2
    |(SO
     
    4
    )
     
    8
    |(Al
     
    6
    Si
     
    6
    O
     
    24
    )
     
    6
    ] · 3 H
     
    2
    O
    9.FB.05Farneseite
    (Na,Ca,K)
     
    56
    [(SO
     
    4
    )
     
    12
    |Al
     
    42
    Si
     
    42
    O
     
    168
    ] · 6H
     
    2
    O
    9.FB.05IMA2008-006
    [Na
     
    82.5
    Ca
     
    33
    K
     
    16.5
    ]
     
    132
    (Si
     
    99
    Al
     
    99
    O
     
    396
    )(SO
     
    4
    )
     
    33
    ·4H
     
    2
    O
    9.FB.10Bicchulite
    Ca
     
    2
    [(OH)
     
    2
    |Al
     
    2
    SiO
     
    6
    ]
    9.FB.10Danalite
    Fe
    2+
    4
    Be
     
    3
    [S|(SiO
     
    4
    )
     
    3
    ]
    9.FB.10Genthelvite
    Zn
     
    4
    Be
     
    3
    [S|(SiO
     
    4
    )
     
    3
    ]
    9.FB.10Haüyne
    (Na,Ca)
     
    4-8
    [Al
     
    6
    Si
     
    6
    (O,S)
     
    24
    ](SO
     
    4
    ,Cl)
     
    1-2
    9.FB.10Helvite
    Mn
    2+
    4
    Be
     
    3
    [S|(SiO
     
    4
    )
     
    3
    ]
    9.FB.10Kamaishilite
    Ca
     
    2
    [(OH)
     
    2
    |Al
     
    2
    SiO
     
    6
    ]
    9.FB.10Lazurite
    (Na,Ca)
     
    8
    [(S,SO
     
    4
    ,Cl
     
    2
    )|Al
     
    6
    Si
     
    6
    O
     
    24
    ]
    9.FB.10Nosean
    Na
     
    8
    [SO
     
    4
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ]
    9.FB.10Sodalite
    Na
     
    8
    [Cl
     
    2
    |Al
     
    6
    Si
     
    6
    O
     
    24
    ]
    9.FB.10Tsaregorodtsevite
    N(CH
     
    3
    )
     
    4
    [AlSi
     
    5
    O
     
    12
    ]
    9.FB.10Tugtupite
    Na
     
    4
    [Cl|BeAlSi
     
    4
    O
     
    12
    ]
    9.FB.10Helvine
    9.FB.15Marialite
    Na
     
    4
    [Cl|(AlSi
     
    3
    O
     
    8
    )
     
    3
    ]
    9.FB.15Meionite
    Ca
     
    4
    [CO
     
    3
    |(Al
     
    2
    Si
     
    2
    O
     
    8
    )
     
    3
    ]
    9.FB.15Silvialite
    (Ca,Na)
     
    4
    [(SO
     
    4
    ,CO
     
    3
    )|(Al
     
    2
    Si
     
    2
    O
     
    8
    )
     
    3
    ]

    Other Names for Alloriite

    Synonyms:
    IMA2006-020
    German names:
    Alloriit

    Other Information

    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Alloriite

    Reference List:Chukanov, N.V., Rastsvetaeva, R.K., Pekov, I.V., Zadov, A.E. (2007): Alloriite,
    Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O, a new mineral of the cancrinite group. Proceedings of the
    Russian Mineralogical Society, 136(1), 82-89.

    Rastsvetaeva, R.K., Ivanova, A.G., Chukanov, N.V., Verin, I.A. (2007): Crystal structure of alloriite. Doklady Akademii Nauk 415(2),241-246 [English translation: Doklady Earth Sciences 415, 815-819(2007)]

    Ciriotti, M.E. & Bonacina, E. (2007): Alloriite e piergorite-(Ce): tre AMIci per due nuove specie italiane. Micro (sistematica), 2/2007, 35-50.

    Chukanov, N.V., Rastsvetaeva, R.K., Pekov, I.V., Zadov, A.E. (2007). Alloriite, Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O, a new mineral species of the cancrinite group. Geology of ore deposits, 49, 752-757.

    Internet Links for Alloriite

    Search Engines:
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  • External Links:
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  • Look for Alloriite on Wikipedia
  • Look for Alloriite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Alloriite in the Natural History Museum (London) online catalogue
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    Localities for Alloriite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Latium
      • Rome Province
        • Campagnano di Roma
          • Sacrofano
            • Sacrofano Caldera
    IMA website
    Mineral and/or Locality
    Google
     
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