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Panichiite Mineral Data
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General Panichiite Information
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Chemical Formula: |
(NH4)2SnCl6 |
Composition: |
Molecular Weight = 371.89 gm |
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Potassium 1.05 % K 1.27 % K2O |
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Tin 31.60 % Sn 40.12 % SnO2 |
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Hydrogen 2.06 % H - % Calc as (NH4)2O |
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Bromine 1.50 % Br 1.50 % Br |
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- %
Br -0.15 % -O=Br2 |
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Nitrogen 7.16 % N 13.30 % (NH4)2O |
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Chlorine 56.63 % Cl 56.63 % Cl |
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- %
Cl -12.78 % -O=Cl2 |
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______ ______ |
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100.00 % 99.89 % = TOTAL OXIDE |
Empirical Formula: |
(NH4)1.9K0.1Sn0.99Cl5.94Br0.07 |
Environment: |
Found in a medium-temperature intracrater fumarole (~250°C). |
IMA Status: |
Approved IMA 2008 (Dana # Added) |
Locality: |
La Fossa crater, Vulcano, Aeolian Islands, Italy. Link to MinDat.org Location Data. |
Name Origin: |
Named for Ugo Panichi, a pioneer in the study of minerals from Vulcano. |
Synonym: |
Ammonium hexachlorostannate |
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IMA2008-005 |
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Panichiite Image |
Images:
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Panichiite
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 |
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Panichiite Crystallography
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Cell Dimensions: |
a = 10.064, Z = 4; V = 1,019.32 Den(Calc)= 2.42 |
Crystal System: |
Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: Fm3m |
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), |
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Physical Properties of Panichiite
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Cleavage: |
None |
Color: |
Colorless, White, Very pale yellow. |
Density: |
2.43 |
Diaphaneity: |
Transparent |
Habit: |
Octahedral Crystals - Occurs as octahedral shaped crystals. |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Panichiite
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Optical Data: |
Isotropic, n=1.68. |
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Calculated Properties of Panichiite
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Electron Density: |
Bulk Density (Electron Density)=2.29 gm/cc note: Specific Gravity of Panichiite =2.42 gm/cc. |
Fermion Index: |
Fermion Index = 0.12 Boson Index = 0.88 |
Photoelectric: |
PEPanichiite = 97.30 barns/electron U=PEPanichiite x relectron= 222.53 barns/cc. |
Radioactivity: |
GRapi = 14.36 (Gamma Ray American Petroleum Institute Units)
Concentration of Panichiite per GRapi unit = 6.97 (%)
Estimated Radioactivity from Panichiite - barely detectable
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Panichiite Classification
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Dana Class: |
11.05.08.04 (11)Halide Complexes; Alumino-fluorides |
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(11.05)where (A)m B (X)6 |
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(11.05.08)Challacolloite Group |
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11.05.08.01 Challacolloite! KPb2Cl5 P 21/c 2/m |
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11.05.08.02 Hephaistosite! TlPb2Cl5 P 21/c 2/m |
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11.05.08.03 Steropesite! Tl3BiCl6 Cc m |
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11.05.08.04 Panichiite! (NH4)2SnCl6 Fm3m 4 3m |
Strunz Class: |
03.AA. 03 - HALIDES |
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03.A - Simple Halides, Without H2O |
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03.AA -M:X = 1:1, 2:3, 3:5, etc. |
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03.AA. Panichiite! (NH4)2SnCl6 Fm3m 4 3m |
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Other Panichiite Information
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References: |
NAME( CanMin, v47:367) PHYS. PROP.(CanMin, v47:367) OPTIC PROP.(CanMin, v47:367) |
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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Print or Cut-and-Paste your Panichiite Specimen Label here :
Panichiite
(NH4)2SnCl6
Dana No: 11.05.08.04 Strunz No: 03.AA.
Locality:
Notes:
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