Stratlingite Mineral Data

Stratlingite Mineral Data
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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 Environment: Environment: In a metamorphosed limestone xenolith in basalt (Bellerberg volcano, Germany); within metamorphosed clay xenoliths in phonolite (Montalto di Castro, Italy).
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: At the Bellerberg volcano, two km north of Mayen, Eifel district, Germany. In a quarry at Campomorto, Montalto di Castro, Lazio, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for W. Stratling, who synthesized the mineral.
Help on Name Pronunciation: Name Pronunciation: Stratlingite + Pronunciation Say STRATLINGITE
Help on Synonym: Synonym: Straetlingite
 

Stratlingite Image

Click Here for Larger Stratlingite Image in a New Browser Window Images:
Click Here for Larger Stratlingite Image

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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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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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 Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Colorless, Light green.
Help on Density: Density: 1.9
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

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
Ncalc = 1.47 - 1.48
Help on Optical Data: Optical Data: Uniaxial (-), w=1.534.
 

Calculated Properties of Stratlingite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.96 gm/cc
note: Specific Gravity of Stratlingite =1.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0037463255
Boson Index = 0.9962536745
Help on Photoelectric: Photoelectric: PEStratlingite = 3.07 barns/electron
U=PEStratlingite x rElectron Density= 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: 77.02.05.01 (77)Tectosilicate Zeolite group
  (77.02)related species
  (77.02.05)Dana Group
 
77.02.05.01 Stratlingite Ca2Al[(OH)6AlSiO2-3(OH)4-3]•2,5(H2O) R 3m 3 2/m
Help on Strunz Class: Strunz Class: 09.EG.25 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EG -Double nets with 6-membered and larger rings
 
09.EG.25 Stratlingite Ca2Al[(OH)6AlSiO2-3(OH)4-3]•2,5(H2O) R 3m 3 2/m
 
09.EG.25 Vertumnite Ca8Al4(Al4Si5)O12[(OH)36•10(H2O) P 21/a 2/m
 

Other Stratlingite Information
Help on References: References: NAME( AntBidBlaNic2) 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 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Stratlingite

Ca2Al[(OH)6AlSiO2-3(OH)4-3]•2,5(H2O)
Dana No: 77.02.05.01 Strunz No: 09.EG.25
Locality:

 

Notes: