General Information
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 Chemical Formula: |
(Sr,Ba,Na)2Al(CO3)F5 |
| Composition: |
Molecular Weight = 374.12 gm) |
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| Empirical Formula: |
Sr1.2Ba0.6Na0.2Al(CO3)F5 |
| IMA Status: |
Approved IMA 1962 |
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Classification
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| Dana Class: |
12.1.1.1 (12)Compound Halides |
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(12.1)with miscellaneous anions |
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(12.1.1)Dana Group |
| Strunz Class: |
III/C.05-10 III - Halogenides |
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III/C - Double halogenides with water, Fluorides |
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III/C.05 - Stenonite - Boggildite series |
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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 = 98.72ø V = 616.58 Den(Calc)= 4.03 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P21/n |
| X Ray Diffraction: |
By Intensity(I/Io): 2.166(1) 3.387(1) 1.925(0.8) |
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Physical Properties
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| Cleavage: |
[001] Good, [120] Good |
| Color: |
colorless or white. |
| Density: |
3.86 |
| Diaphaniety: |
Transparent |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties
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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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Other Information
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| References: |
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 -Athena Mineralogy
2 - EUROmin Project
3 -MinDat.org Location Data
4 -MinMax
5 -WWW-MINCRYST
6 -École des Mines de Paris
Search for Stenonite using:
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Ask about Stenonite here :
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Pronunciation Guide 
