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Panichiite Mineral Data

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General Panichiite Information

Help on Chemical  Formula: Chemical Formula: (NH4)2SnCl6
Help on Composition: Composition: Molecular Weight = 371.89 gm
   Potassium   1.05 %  K     1.27 % K2O
   Tin        31.60 %  Sn   40.12 % SnO2
   Hydrogen    2.06 %  H      -   % Calc as (NH4)2O
   Bromine     1.50 %  Br    1.50 % Br
                -   %   Br   -0.15 % -O=Br2   
   Nitrogen    7.16 %  N    13.30 % (NH4)2O
   Chlorine   56.63 %  Cl   56.63 % Cl
                -   %   Cl  -12.78 % -O=Cl2   
             ______        ______ 
             100.00 %       99.89 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)1.9K0.1Sn0.99Cl5.94Br0.07
Help on Environment: Environment: Found in a medium-temperature intracrater fumarole (~250°C).
Help on IMA Status: IMA Status: Approved IMA 2008 (Dana # Added)
Help on Locality: Locality: La Fossa crater, Vulcano, Aeolian Islands, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ugo Panichi, a pioneer in the study of minerals from Vulcano.
Help on Synonym: Synonym: Ammonium hexachlorostannate

Panichiite Image

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Comments: BSE image of octahedral panichiite crystals on alunite. (CanMin, v47:367).
Location: La Fossa crater, Vulcano, Aeolian Islands, Italy. Scale: See Image.
© Canadian Mineralogist

Panichiite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.064, Z = 4; V = 1,019.32 Den(Calc)= 2.42
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: Fm3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.811(1), 5.032(0.73), 2.516(0.69),3.035(0.48), 1.779(0.42), 2.25(0.39), 1.937(0.23), 1.701(0.22),

Physical Properties of Panichiite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White, Very pale yellow.
Help on Density: Density: 2.43
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Octahedral Crystals - Occurs as octahedral shaped crystals.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Panichiite

Help on Optical Data: Optical Data: Isotropic, n=1.68.

Calculated Properties of Panichiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Panichiite =2.42 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.12
Boson Index = 0.88
Help on Photoelectric: Photoelectric: PEPanichiite = 97.30 barns/electron
U=PEPanichiite x relectron= 222.53 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 14.36 (Gamma Ray American Petroleum Institute Units)
Concentration of Panichiite per GRapi unit = 6.97 (%)

Estimated Radioactivity from Panichiite - barely detectable


Panichiite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.05)where (A)m B (X)6
  (11.05.08)Challacolloite Group Challacolloite! KPb2Cl5 P 21/c 2/m Hephaistosite! TlPb2Cl5 P 21/c 2/m Steropesite! Tl3BiCl6 Cc m Panichiite! (NH4)2SnCl6 Fm3m 4 3m
Help on  Strunz Class: Strunz Class: 03.AA. 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AA -M:X = 1:1, 2:3, 3:5, etc.
03.AA. Panichiite! (NH4)2SnCl6 Fm3m 4 3m

Other Panichiite Information

Help on References: References: NAME( CanMin, v47:367) PHYS. PROP.(CanMin, v47:367) OPTIC PROP.(CanMin, v47:367)
Help on See Also: See Also: Links to other databases for Panichiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 03.AA.





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