Stratlingite Mineral Data + Say STRATLINGITE


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General Stratlingite Information
Help on Chemical Formula: Chemical Formula: Ca2Al[(OH)6AlSiO2-3(OH)4-3]·2,5(H2O)
Help on Composition: Composition: Molecular Weight = 409.31 gm
   Calcium   19.58 %  Ca   27.40 % CaO
   Aluminum  13.18 %  Al   24.91 % Al2O3
   Silicon    6.86 %  Si   14.68 % SiO2
   Hydrogen   3.69 %  H    33.01 % H2O
   Oxygen    56.68 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Al2(SiO2)(OH)10·2.5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: Straetlingite
 

Stratlingite Image

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Stratlingite

Comments: Transparent blue-tinted platy stratlingite crystal aggregate in vug.
Location: Bellerberg, Eifel, Rheinland-Pfalz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stratlingite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:6.57396
Help on Cell Dimensions: Cell Dimensions: a = 5.753, c = 37.82, Z = 3; V = 1,084.03 Den(Calc)= 1.88
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.2(1), 12.69(1), 2.874(0.7),
Click Here for Large Stratlingite Structure Window Crystal Structure:

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Rinaldi R , Sacerdoti M , Passaglia E , European Journal of Mineralogy , 2 (1990) p.841-849, Stratlingite: crystal structure, chemistry, and a reexamination, of its polytype vertumnite

 

Physical Properties of Stratlingite

Help on Color: Color: Colorless, Light green.
Help on Density: Density: 1.9
Help on Diaphaniety: Diaphaniety: Transparent
 

Optical Properties of Stratlingite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.116 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.128 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.284,KPDmeas= 0.2811,KC= 0.2519
Help on Optical Data: Optical Data: Uniaxial (-), w=1.534.
 

Calculated Properties of Stratlingite

Help on Electron Density: Electron Density:

relectron=1.96 gm/cc
note: rStratlingite =1.90 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00374
Boson Index = 0.99626
Help on Photoelectric: Photoelectric:

PEStratlingite = 3.07 barns/electron
U=PEStratlingite x relectron= 6.01 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Stratlingite is Not Radioactive
 

Stratlingite Classification
Help on Dana Class: Dana Class: 77.2.5.1 (77)Tectosilicate Zeolite group
  (77.2)related species
  (77.2.5)Dana Group
 
77.2.5.1 Stratlingite Ca2Al[(OH)6AlSiO2-3(OH)4-3]·2,5(H2O) R 3m 3 2/m
Help on Strunz Class: Strunz Class: VIII/H.39-30 VIII - Silicates
  VIII/H - Phyllosilicates (layered) Mica minerals with tetrahedral-double layers and related structures
  VIII/H.39 - Silhydrite - Vertumnite series
 
VIII/H.39-10 Silhydrite 3SiO2·(H2O) P??? Ortho
 
VIII/H.39-20 Magadiite NaSi7O13(OH)3·4(H2O) Unk Mono
 
VIII/H.39-30 Stratlingite Ca2Al[(OH)6AlSiO2-3(OH)4-3]·2,5(H2O) R 3m 3 2/m
 
VIII/H.39-40 Vertumnite Ca8Al4(Al4Si5)O12[(OH)36·10(H2O) P 21/a 2/m
 

Other Stratlingite Information
Help on References: References: NAME( Athena) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Stratlingite :
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 - WWW-MINCRYST 14 -École des Mines de Paris

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Stratlingite

Ca2Al[(OH)6AlSiO2-3(OH)4-3]·2,5(H2O)
Dana No: 77.2.5.1 Strunz No: VIII/H.39-30
Locality:

 

Notes:

 
 
   
 
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