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Marinellite

Big Photo

Magliano Romano, Rome Province, Latium, Italy
© Leon Hupperichs

Show Marinellite Photos (6)
Formula:
(Na,K)
 
42
Ca
 
6
[Cl
 
2
|(SO
 
4
)
 
8
|(Al
 
6
Si
 
6
O
 
24
)
 
6
] · 3 H
 
2
O
System:TrigonalColour:colourless
Hardness:5½
Name:After Professor Giorgio Marinelli (1922-1993), University of Pisa, Italy


Cancrinite Group.

Classification of Marinellite

IMA status:Approved 2002
Strunz 8th edition ID:8/J.09-95
Nickel-Strunz 10th (pending) edition ID:9.FB.05

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
mindat.org URL:http://www.mindat.org/min-25638.html
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Type Occurrence of Marinellite

Type Locality:Sacrofano, Campagnano di Roma, Rome Province, Latium, Italy

Physical Properties of Marinellite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:colourless
Streak:white
Hardness (Mohs):5½
Hardness Data:Measured
Cleavage:Poor/Indistinct
on {001}
Fracture:Conchoidal
Density (measured):2.405 g/cm3
Density (calculated):2.4 g/cm3

Crystallography of Marinellite

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:P3 1c
Cell Parameters:a = 12.88Å, c = 31.761Å
Ratio:a:c = 1 : 2.466
Unit Cell Volume:V 4563.1 ų
Z:1
X-Ray Powder Diffraction:
d-spacingIntensity
3.725 (100)
3.513 (80)
4.20 (42)
3.089 (40)
2.150 (40)

Optical Data of Marinellite

Type:Uniaxial (+)
RI values: nω = 1.495 nε = 1.497
Maximum Birefringence:δ = 0.002

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Marinellite

Formula:
(Na,K)
 
42
Ca
 
6
[Cl
 
2
|(SO
 
4
)
 
8
|(Al
 
6
Si
 
6
O
 
24
)
 
6
] · 3 H
 
2
O
Essential elements:
All elements listed in formula:Al, Ca, Cl, H, K, Na, O, S, Si
Analyical Data:electron microprobe analysis, H2O calculated by difference.
K2O (7.94)
Na2O (14.95)
CaO (5.14)
Al2O3 (27.80)
SiO2 (32.73)
SO3 (9.84)
Cl (0.87)
H2O (0.93)

sum 100.20 wt %, less O = Cl 0.20
(total 100.00 wt %)
Empirical Formula:
(Na
 
31.86
K
 
11.13
Ca
 
6.06
)
 
=49.05
(Si
 
35.98
Al
 
36.02
)
 
=72
O
 
144.60
(SO
 
4
)
 
8.12
Cl
 
1.62
 · 3.441H
 
2
O

Relationship of Marinellite 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.05Farneseite
    (Na,Ca,K)
     
    56
    		[(SO
     
    4
    		)
     
    12
    		|Al
     
    42
    		Si
     
    42
    		O
     
    168
    		] · 6H
     
    2
    		O
    9.FB.05Alloriite
    (Na,Ca,K)
     
    26
    		Ca
     
    4
    		[Cl
     
    6
    		|(SO
     
    4
    		)
     
    6
    		|(Al
     
    6
    		Si
     
    6
    		O
     
    24
    		)
     
    4
    		]
    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 Marinellite

    Synonyms:
    IMA2002-021
    Russian names:
    Маринеллит

    Other Information

    Fluorescence in UV light:none
    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 Marinellite

    Reference List:Bonaccorsi, E. & P. Orlandi (2003): Marinellite, a new feldspathoid of the cancrinite-sodalite group.- European Journal of Mineralogy (2003): 15: 1019-1027.

    Internet Links for Marinellite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Marinellite in the Natural History Museum (London) online catalogue
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    Localities for Marinellite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (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
    		E. Bonaccorsi & P. Orlandi (2003): Marinellite, e new feldspathoid of the cancrinite-sodalite group.- Eur. Journ. Mineral. 15, 1019-1027
    F. Bellatreccia, G. Della Ventura, R. Pucci and L. Mattei, Università Roma Tre
    Mineral and/or Locality
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