Marinellite Mineral Data


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General Marinellite Information

Help on Chemical  Formula: Chemical Formula: [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2·6(H2O)
Help on Composition: Composition: Molecular Weight = 6,673.61 gm
   Potassium   6.59 %  K     7.94 % K2O
   Sodium     11.09 %  Na   14.95 % Na2O
   Calcium     3.68 %  Ca    5.14 % CaO
   Aluminum   14.71 %  Al   27.80 % Al2O3
   Silicon    15.30 %  Si   32.73 % SiO2
   Hydrogen    0.10 %  H     0.93 % H2O
   Sulfur      3.94 %  S     9.84 % SO3
   Chlorine    0.87 %  Cl    0.87 % Cl
                -   %  Cl   -0.20 % -O=Cl2
   Oxygen     43.72 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na32.19K11.25Ca6.12Si36.35Al36.39O146.12(SO4)8.2Cl1.64·3.44(H2O)
Help on Environment: Environment: In an ejected volcanic block. Cancrinite-sodalite group; structure discussed.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Sacrofano, Biacchella Valley, Latium, Italy Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Giorgio Marinelli (1922-1993), Professor, Department of Earth Sciences, University of Pisa, specialist in magma genesis and tectonic settings.
Help on Synonym: Synonym: IMA2002-021
 

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Marinellite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.46591
Help on Cell Dimensions: Cell Dimensions: a = 12.88, c = 31.761, Z = 1; V = 4,563.07 Den(Calc)= 2.43
Help on Crystal System: Crystal System: TrigonalSpace Group: P 31c or P 2c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.725(1)(214), 3.513(0.8)(215), 4.2(0.42)(210),2.15(0.4)(330), 3.089(0.4)(217), 2.555(0.35)(405), 3.296(0.35)(216),
Click Here for Large Marinellite Structure Window Crystal Structure:

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Help on Above


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

 

Physical Properties of Marinellite

Help on Cleavage: Cleavage: [001] Poor
Help on Color: Color: Colorless.
Help on Density: Density: 2.405
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Marinellite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2041,KPDmeas= 0.2062,KC= 0.2037
Help on Optical Data: Optical Data: Uniaxial (+), w=1.495, e=1.497, bire=0.0020.
 

Calculated Properties of Marinellite

Help on Electron Density: Electron Density:

relectron=2.40 gm/cc
note: rMarinellite =2.43 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0077
Boson Index = 0.9923
Help on Photoelectric: Photoelectric:

PEMarinellite = 2.60 barns/electron
U=PEMarinellite x relectron= 6.25 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 93.96 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Marinellite - barely detectable

 

Marinellite Classification

Help on  Dana Class: Dana Class: 76.2.5.17 (76)Tectosilicate Al-Si Framework
  (76.2)Feldspathoids and related species
  (76.2.5)Cancrinite group
 
76.2.5.1 Afghanite (Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O) P 63/mmc, P 63mc, or P 62c Hex
 
76.2.5.2 Bystrite (Na,K)7Ca(Si6Al6)O24S4.5·(H2O) P 31c 3m
 
76.2.5.3 Cancrinite Na6Ca2Al6Si6O24(CO3)2 P 63 6
 
76.2.5.4 Cancrisilite Na7Al5Si7O24(C03)·3(H2O) P 63 6
 
76.2.5.5 Davyne Na4K2Ca2Si6Al6O24(SO4)Cl2 P 63/m 6/m
 
76.2.5.6 Franzinite [(Na,K)30Ca10][Si30Al30O120](SO4)10·2(H2O) P 321 3 2
 
76.2.5.7 Giuseppettite [Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2·5H2O P 31c 3m
 
76.2.5.8 Hydroxycancrinite Na4(AlSiO4)3(OH)·(H2O) P 63 6
 
76.2.5.9 Liottite (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4·(H2O) P 6m2 6 m2
 
76.2.5.10 Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4)2-3 P 6322 6 2 2
 
76.2.5.11 Pitiglianoite Na6K2Si6Al6O24(SO4)·2(H2O) P 63 6
 
76.2.5.12 Quadridavyne (Na,K)6Ca2Al6Si6O24Cl4 P 63/m 6/m
 
76.2.5.13 Sacrofanite (Na,Ca,K)9Si6Al6O24[(OH),(SO4),(CO3),Cl)]4·n(H2O) P 63/mmc ? 6/m 2/m 2/m
 
76.2.5.14 Tounkite (Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O) P 6222 6 2 2
 
76.2.5.15 Vishnevite (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4·n(H2O) P 6322 6 2 2
 
76.2.5.16 Wenkite Ba4Ca6(Si,Al)20O39(OH)2(SO4)3·n(H2O)(?) P 62m 6 m2
 
76.2.5.17 Marinellite ! [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2·6(H2O) P 31c or P 2c Trig
 
76.2.5.18 IMA2004-043! (Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12·6(H2O) P 63/m 6/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VIII/JX.00-00 VIII - Silicates
  VIII/JX - Unclassified Strunz Tectosilicates
  VIII/JX.00 - Cancrinite-sodalite group
 

Other Marinellite Information

Help on References: References: NAME( CanMin, 42:1248) PHYS. PROP.(CanMin, 42:1248) OPTIC PROP.(CanMin, 42:1248)
Help on See Also: See Also: Links to other databases for Marinellite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Marinellite Specimen Label here :

Marinellite

[(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2·6(H2O)
Dana No: 76.2.5.17 Strunz No: VIII/JX.00-00
Locality:

 

Notes:

 

 
   
 
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