Bellbergite Mineral Data + Say BELLBERGITE


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General Bellbergite Information
Help on Chemical Formula: Chemical Formula: (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O)
Help on Composition: Composition: Molecular Weight = 3,214.44 gm
   Potassium   1.58 %  K     1.90 % K2O
   Barium      1.28 %  Ba    1.43 % BaO
   Sodium      0.50 %  Na    0.67 % Na2O
   Strontium   6.54 %  Sr    7.74 % SrO
   Calcium     6.61 %  Ca    9.25 % CaO
   Aluminum   15.11 %  Al   28.55 % Al2O3
   Silicon    15.73 %  Si   33.65 % SiO2
   Hydrogen    1.88 %  H    16.81 % H2O
   Oxygen     50.77 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.3Na0.7Ca5.3Sr2.4Ba0.3Al18Si18O72·30(H2O)
Help on Environment: Environment: Ca-rich xenoliths in leucite tephrite lava.
Help on IMA Status: IMA Status: Approved IMA 1993
Help on Locality: Locality: Bellberg volcano, Mayen, Laacher See area, Eifel, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: ICSD 64728
  IMA1990-057
  PDF 45-1482
 

Bellbergite Image

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Bellbergite

Comments: Small colorless to white hexagonal crystals of bellbergite on matrix.
Location: Ettringer Bellerberg, Ettringen, near Mayen, Eifel Mts, Rhineland-Palatinate, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Bellbergite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.20718
Help on Cell Dimensions: Cell Dimensions: a = 13.244, c = 15.988, Z = 1; V = 2,428.64 Den(Calc)= 2.20
Help on Crystal System: Crystal System: HexagonalSpace Group: P 63/mmc, P 62c-, P 63mc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.8(1), 6.58(0.8), 2.21(0.7),2.95(0.7), 1.83(0.5), 2.5(0.5), 2.7(0.5),
Click Here for Large Bellbergite Structure Window Crystal Structure:

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Ruedinger B , Tillmanns E , Hentschel G , Mineralogy and Petrology , 48 (1993) p.147-152, Bellbergite - a new mineral with the zeolite structure type EAB

 

Physical Properties of Bellbergite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.2
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Pyramidal - Crystals are shaped like pyramids.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Bellbergite

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2339,KPDmeas= 0.2339,KC= 0.2237
Help on Optical Data: Optical Data: Uniaxial (-), e=1.507, w=1.522, bire=0.0150.
 

Calculated Properties of Bellbergite

Help on Electron Density: Electron Density:

relectron=2.20 gm/cc
note: rBellbergite =2.20 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01454
Boson Index = 0.98546
Help on Photoelectric: Photoelectric:

PEBellbergite = 14.11 barns/electron
U=PEBellbergite x relectron= 31.06 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 22.83 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Bellbergite - barely detectable

 

Bellbergite Classification
Help on Dana Class: Dana Class: 77.1.8.1 (77)Tectosilicate Zeolite group
  (77.1)true zeolites
  (77.1.8)Unclassified zeolite species
 
77.1.8.1 Bellbergite (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O) P 63/mmc, P 62c-, P 63mc Hex
 
77.1.8.2 Tschernichite (Ca,Na)(Si6Al2)O16·4-8(H2O) P 4/mmm 4/m 2/m 2/m
 
77.1.8.3 Mazzite-Na! Na8Al8Si28O72·30(H2O) P 63/mmc 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/J.26-95 VIII - Silicates
  VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites
  VIII/J.26 - Zeolite group, Willhendersonite - Chabazite - Perialite series
 
VIII/J.26-10 Willhendersonite KCaAl3Si3O12·5(H2O) P1 1
 
VIII/J.26-20 Chabazite-Na! (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m
 
VIII/J.26-25 Chabazite-K! (K2,Ca,Na2,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m
 
VIII/J.26-30 Chabazite-Ca (Ca0.5,Na,K)4[Al4Si8O24]·12H2O P1 1
 
VIII/J.26-35 Chabazite-Sr! (Sr,Ca,K2,Na2)[Al2Si4O12]·6(H2O) R 3m 3 2/m
 
VIII/J.26-40 Tschernichite (Ca,Na)(Si6Al2)O16·4-8(H2O) P 4/mmm 4/m 2/m 2/m
 
VIII/J.26-50 Gmelinite-Na (Na2,Ca)Al2Si4O12·6(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-52 Gmelinite-K! (K,Na,Ca)6(Al7Si17O48)·22(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-54 Gmelinite-Ca! (Ca,Na2)Al2Si4O12·6(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-58 Levyne-Na! (Na2,Ca,K2)Al2Si4O12·6(H2O) R 3m 3 2/m
 
VIII/J.26-60 Levyne-Ca (Ca,Na2,K2)Al2Si4O12·6(H2O) R 3m 3 2/m
 
VIII/J.26-70 Offretite (K2,Ca,Mg)2.5Al5Si13O36·15(H2O) P 6m2 6 m2
 
VIII/J.26-80 Mazzite K2CaMg2(Al,Si)36O72·28(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-90 Erionite-Na (Na2,K2,Ca)2[Al4Si14O36]·15(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-92 Erionite-K! (K2,Ca,Na2)2[Al4Si14O36]·15(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-94 Erionite-Ca! (Ca,K2,Na2)2[Al4Si14O36]·15(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-95 Bellbergite (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O) P 63/mmc, P 62c-, P 63mc Hex
 
VIII/J.26-100 Perlialite K8Tl4Al12Si24O72·20(H2O) P 6/mmm 6/m 2/m 2/m
 

Other Bellbergite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)
Help on See Also: See Also: Links to other databases for Bellbergite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris

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Bellbergite

(K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O)
Dana No: 77.1.8.1 Strunz No: VIII/J.26-95
Locality:

 

Notes:

 
 
   
 
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