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Stenonite Mineral Data
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General Stenonite Information
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 Chemical Formula: |
(Sr,Ba,Na)2Al(CO3)F5 |
| Composition: |
Molecular Weight = 374.12 gm |
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Barium 22.02 % Ba 24.59 % BaO |
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Sodium 1.23 % Na 1.66 % Na2O |
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Strontium 28.10 % Sr 33.24 % SrO |
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Aluminum 7.21 % Al 13.63 % Al2O3 |
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Carbon 3.21 % C 11.76 % CO2 |
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Oxygen 12.83 % O |
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Fluorine 25.39 % F 25.39 % F |
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- %
F -10.69 % -O=F2 |
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______ ______ |
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100.00 % 99.57 % = TOTAL OXIDE |
| Empirical Formula: |
Sr1.2Ba0.6Na0.2Al(CO3)F5 |
| Environment: |
Contact zone between siderite�cryolite and fluorite-rich rocks. |
| IMA Status: |
Approved IMA 1962 |
| Locality: |
Ivigtut cryolite deposit, southwestern Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Nicholaus Stenonis (Steno) (1638-1686), Danish scientist, who determined the constancy of interfacial angles of crystals. |
| Name Pronunciation: |
Stenonite + Pronunciation  |
| Synonym: |
ICSD 201803 |
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PDF 15-366 |
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Stenonite Image |
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Images:
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Stenonite Crystallography
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| Axial Ratios: |
a:b:c =0.6261:1:1.5107 |
| Cell Dimensions: |
a = 5.45, b = 8.704, c = 13.15, Z = 4; beta = 98.72° V = 616.58 Den(Calc)= 4.03 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n |
| X Ray Diffraction: |
By Intensity(I/Io): 2.166(1), 3.387(1), 1.925(0.8), |
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Physical Properties of Stenonite
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| Cleavage: |
{001} Good, {120} Good |
| Color: |
Colorless, White. |
| Density: |
3.86 |
| Diaphaneity: |
Transparent |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Stenonite
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| Optical Data: |
Biaxial (-), a=1.452, b=1.527, g=1.538, bire=0.0860, 2V(Calc)=40, 2V(Meas)=43. |
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Calculated Properties of Stenonite
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| Electron Density: |
Bulk Density (Electron Density)=3.65 gm/cc
note: Specific Gravity of Stenonite =4.03 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEStenonite = 130.68 barns/electron
U=PEStenonite x rElectron Density= 476.91 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stenonite is Not Radioactive |
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Stenonite Classification
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| Dana Class: |
12.01.01.01 (12)Compound Halides |
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(12.01)with miscellaneous anions |
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(12.01.01)Dana Group |
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12.01.01.01 Stenonite (Sr,Ba,Na)2Al(CO3)F5 P 21/n 2/m |
| Strunz Class: |
03.CG.05 03 - HALIDES |
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03.C - Complex Halides |
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03.CG -Aluminofluorides with CO3, SO4, PO4 |
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03.CG.05 Stenonite (Sr,Ba,Na)2Al(CO3)F5 P 21/n 2/m |
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Other Stenonite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Stenonite Specimen Label here :
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Stenonite
(Sr,Ba,Na)2Al(CO3)F5
Dana No: 12.01.01.01 Strunz No: 03.CG.05
Locality:
Notes:
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