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Panichiite

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Formula:
(NH
 
4
)
 
2
SnCl
 
6
System:IsometricColour:Colorless
Name:Named by Francesco DeMartin, Italo Campostrini, and Carlo Maria Gramaccioli in 2009 in honor of Ugo Panichi [August 22, 1872 Firenze, Italy - March 11, 1966 Pavia, Italy], professor of mineralogy at Pavia University and professor of experimental physics at the University of Siena.
This page provides mineralogical data about Panichiite.

Classification of Panichiite

IMA status:Approved 2008
Nickel-Strunz 10th (pending) edition ID:3.00.

3 : HALIDES
0 :
0 :
Dana 8th edition ID:11.5.1.3

11 : HALIDE COMPLEXES
5 : AmBX6
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Type Occurrence of Panichiite

Type Locality:La Fossa crater, Vulcano Island, Lipari, Eolie Islands (Aeolian Islands), Messina Province, Sicily, Italy
General Appearance of Type Material:Colorless octahedral crystals (sometimes with minor cube faces) and up to 0.2 mm, usually in aggregates.
Geological Setting of type material:From a medium-temperature fumarole [250 C] on the edge of a volcanic crater
Associated Minerals at type locality:
BismuthiniteAnhydriteAluniteDemicheleite-(Br)Godovikovite

Physical Properties of Panichiite

Lustre:Vitreous, Sub-Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colorless
Streak:White
Tenacity:Brittle
Cleavage:None Observed
Density (measured):2.43 g/cm3
Density (calculated):2.423 g/cm3

Crystallography of Panichiite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Fm3m {F4/m 3 2/m}
Space Group Setting:Fm3m
Cell Parameters:a = 10.0641Å
Unit Cell Volume:V 1019.31 ų
Z:4
Morphology:Octahedral {111} with rare small cube faces {001}
X-Ray Powder Diffraction:
d-spacingIntensity
5.81 (100)
5.03 (73)
3.035 (48)
2.516 (69)
2.250 (39)
1.937 (23)
1.779 (42)
1.701 (22)

Optical Data of Panichiite

Type:Isotropic
RI values: n = 1.68
Birefringence:0.0
Maximum Birefringence:δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:High
Pleochroism:Non-pleochroic

Chemical Properties of Panichiite

Formula:
(NH
 
4
)
 
2
SnCl
 
6
Essential elements:Cl, H, N, Sn
All elements listed in formula:Cl, H, N, Sn

Other Names for Panichiite

Synonyms:
IMA2008-005
Other Languages:

Other Information

Fluorescence in UV light:Not fluorescent in UV
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Panichiite

Reference List:

- +
Demartin, F., Campostrini, I. & Gramaccioli, C. M. (2009): Panichiite, natural ammonium hexachlorostannate(IV), (NH4)2SnCl6, from La Fossa crater, Vulcano, Aeolian Islands, Italy. Canadian Mineralogist 47, 367-372.

Internet Links for Panichiite

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    • Localities for Panichiite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Sicily
      • Messina Province
        • Eolie Islands (Aeolian Islands)
          • Lipari
            • Vulcano Island
    		Demartin, F., Campostrini, I. & Gramaccioli, C. M. (2009): Panichiite, natural ammonium hexachlorostannate(IV), (NH4)2SnCl6, from La Fossa crater, Vulcano, Aeolian Islands, Italy. Canadian Mineralogist 47, 367-372.
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