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Edingtonite Mineral Data

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General Edingtonite Information

Help on Chemical  Formula: Chemical Formula: BaAl2Si3O10•4(H2O)
Help on Composition: Composition: Molecular Weight = 507.60 gm
   Barium    27.05 %  Ba   30.21 % BaO
   Aluminum  10.63 %  Al   20.09 % Al2O3
   Silicon   16.60 %  Si   35.51 % SiO2
   Hydrogen   1.59 %  H    14.20 % H2O
   Oxygen    44.13 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaAl2Si3O10•4(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1825
Help on Locality: Locality: Kilpatrick Hills, near Glasgow, Dumbarton, Scotland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the discoverer of the mineral, Edington from Glasgow, Scotland.
Help on Name Pronunciation: Name Pronunciation: Edingtonite + Pronunciation Say EDINGTONITE
Help on Synonym: Synonym: Antiedrite
  ICSD 29516
  PDF 25-60
 

Edingtonite Image

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  Edingtonite

Comments: Lath-shaped crystalline aggregates of edingtonite.
Location: Jacupiranga mine, Sao Paolo, Brazil. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Edingtonite

Comments: White, stout prisms of calcite on pinkish analcime with small, cream-colored bladed edingtionite crystals.
Location: Old Kilpatrick, Dunbartonshite, Scotland. Scale: Picture Size 3 cm.
© Dave Barthelmy

Edingtonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9881:1:0.6749
Help on Cell Dimensions: Cell Dimensions: a = 9.55, b = 9.665, c = 6.523, Z = 2; V = 602.08 Den(Calc)= 2.80
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 21212
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.749(1), 3.58(1), 4.8(0.9),
 

Physical Properties of Edingtonite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Brownish gray, Colorless, Gray, White, Pink.
Help on Density: Density: 2.69 - 2.7, Average = 2.69
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudo Tetragonal - Crystals show a tetragonal shape.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Edingtonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1954,KPDmeas= 0.203,KC= 0.2024
Ncalc = 1.54 - 1.57
Help on Optical Data: Optical Data: Biaxial (-), a=1.538, b=1.549, g=1.554, bire=0.0160, 2V(Calc)=66, 2V(Meas)=~50.
 

Calculated Properties of Edingtonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.59 gm/cc
note: Specific Gravity of Edingtonite =2.70 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEEdingtonite = 113.83 barns/electron
U=PEEdingtonite x rElectron Density= 294.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Edingtonite is Not Radioactive
 

Edingtonite Classification

Help on  Dana Class: Dana Class: 77.01.05.06 (77)Tectosilicate Zeolite group
  (77.01)true zeolites
  (77.01.05)Natrolite and related species
 
77.01.05.01 Natrolite Na2[Al2Si3O10]•2(H2O) F dd2 mm2
 
77.01.05.02 Tetranatrolite? Na2[Al2Si3O10]•2(H2O) I 42d 4 2m
 
77.01.05.03 Paranatrolite Na2[Al2Si3O10]•3(H2O) Cc m
 
77.01.05.04 Mesolite Na2Ca2Al6Si9O30•8(H2O) C 2 2
 
77.01.05.05 Scolecite CaAl2Si3O10•3(H2O) Cc m
 
77.01.05.06 Edingtonite BaAl2Si3O10•4(H2O) P 21212 2 2 2
 
77.01.05.07 Gonnardite Na2CaAl4Si6O20•7(H2O) I 42d 4 2m
 
77.01.05.08 Cowlesite CaAl2Si3O10•5-6(H2O) P 2221, P mmm, Pmm2 Ortho
 
77.01.05.09 Thomsonite-Ca NaCa2Al5Si5O20•6(H2O) Pncn 2/m 2/m 2/m
 
77.01.05.10 Thomsonite-Sr! (Sr,Ca)2Na[Al5Si5O20]•7(H2O) Pcnn 2/m 2/m 2/m
 
77.01.05.11 Nabesite! Na2BeSi4O10•4(H2O) P 212121 2 2 2
Help on  Strunz Class: Strunz Class: 09.GA.15 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GA -Zeolites with T5O10 Units � The Fibrous Zeolites
 
09.GA.15 Edingtonite BaAl2Si3O10•4(H2O) P 21212 2 2 2
 
09.GA.15 Kalborsite K6Al4Si6BO20(OH)4Cl P 42m 4 2m
 

Other Edingtonite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Edingtonite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST
18 - Zeolite Database by Bruno Herreros

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

Edingtonite

BaAl2Si3O10•4(H2O)
Dana No: 77.01.05.06 Strunz No: 09.GA.15
Locality:

 

Notes:

 

 
   
 


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