Mineralogy Database

Stenonite Mineral Data

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General Stenonite Information

Help on Chemical  Formula: Chemical Formula: (Sr,Ba,Na)2Al(CO3)F5
Help on Composition: Composition: Molecular Weight = 374.12 gm
   Barium     22.02 %  Ba   24.59 % BaO
   Sodium      1.23 %  Na    1.66 % Na2O
   Strontium  28.10 %  Sr   33.24 % SrO
   Aluminum    7.21 %  Al   13.63 % Al2O3
   Carbon      3.21 %  C    11.76 % CO2
   Oxygen     12.83 %  O
   Fluorine   25.39 %  F    25.39 % F
                -   %   F   -10.69 % -O=F2    
             ______        ______ 
             100.00 %       99.57 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr1.2Ba0.6Na0.2Al(CO3)F5
Help on Environment: Environment: Contact zone between siderite�cryolite and fluorite-rich rocks.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Ivigtut cryolite deposit, southwestern Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Nicholaus Stenonis (Steno) (1638-1686), Danish scientist, who determined the constancy of interfacial angles of crystals.
Help on Name Pronunciation: Name Pronunciation: Stenonite + Pronunciation Say STENONITE
Help on Synonym: Synonym: ICSD 201803
  PDF 15-366

Stenonite Image

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Comments: White nearly opaque stenonite with minor pyrite grains.
Location: Ivigtut, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stenonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6261:1:1.5107
Help on Cell Dimensions: Cell Dimensions: a = 5.45, b = 8.704, c = 13.15, Z = 4; beta = 98.72° V = 616.58 Den(Calc)= 4.03
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.166(1), 3.387(1), 1.925(0.8),

Physical Properties of Stenonite

Help on Cleavage: Cleavage: {001} Good, {120} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.86
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Stenonite

Help on Optical Data: Optical Data: Biaxial (-), a=1.452, b=1.527, g=1.538, bire=0.0860, 2V(Calc)=40, 2V(Meas)=43.

Calculated Properties of Stenonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.65 gm/cc
note: Specific Gravity of Stenonite =4.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEStenonite = 130.68 barns/electron
U=PEStenonite x rElectron Density= 476.91 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stenonite is Not Radioactive

Stenonite Classification

Help on  Dana Class: Dana Class: (12)Compound Halides
  (12.01)with miscellaneous anions
  (12.01.01)Dana Group Stenonite (Sr,Ba,Na)2Al(CO3)F5 P 21/n 2/m
Help on  Strunz Class: Strunz Class: 03.CG.05 03 - HALIDES
  03.C - Complex Halides
  03.CG -Aluminofluorides with CO3, SO4, PO4
03.CG.05 Stenonite (Sr,Ba,Na)2Al(CO3)F5 P 21/n 2/m

Other Stenonite Information

Help on References: References: NAME( AntBidBlaNic3) 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 Stenonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 03.CG.05





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