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Panunzite

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Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy
© OT. Ljostad

Show Panunzite Photos (2)



Formula:
(Na,K)AlSiO
 
4
System:Hexagonal
This page provides mineralogical data about Panunzite.

Classification of Panunzite

IMA status:Approved 1978
Strunz 8th edition ID:8/J.02-40
Nickel-Strunz 10th (pending) edition ID:9.FA.05

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
Dana 8th edition ID:76.2.1.4

76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
Hey's CIM Ref.:16.4.2

16 : Silicates Containing Aluminum and other Metals
4 : Aluminosilicates of Na and K
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Type Occurrence of Panunzite

Type Locality:Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Year of Discovery:1985

Crystallography of Panunzite

Crystal System:Hexagonal
Cell Parameters:a = 20.51Å, b = 8.55Å
Ratio:a:b = 2.399 : 1
Unit Cell Volume:V 0.00 ų (Calculated from Unit Cell)

Optical Data of Panunzite

Type:Uniaxial (-)
RI values: nω = 1.540 nε = 1.535
Maximum Birefringence:δ = 0.005

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low

Chemical Properties of Panunzite

Formula:
(Na,K)AlSiO
 
4
Essential elements:Al, Na, O, Si
All elements listed in formula:Al, K, Na, O, Si
Common Impurities:Fe,Mg,Ca,Sr,Ba,Rb,H2O

Relationship of Panunzite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.FA.05Kaliophilite
KAlSiO
 
4
9.FA.05Kalsilite
KAlSiO
 
4
9.FA.05Nepheline
(Na,K)AlSiO
 
4
9.FA.05Trikalsilite
(Na,K)AlSiO
 
4
9.FA.05Yoshiokaite
(Ca,Na)[Al(Al,Si)O
 
4
]
9.FA.05Megakalsilite
KAlSiO
 
4
9.FA.10Malinkoite
NaBSiO
 
4
9.FA.15Virgilite
LiAlSi
 
2
O
 
6
9.FA.25Lisitsynite
KBSi
 
2
O
 
6
9.FA.30Adularia
KAlSi
 
3
O
 
8
9.FA.30Anorthoclase
(Na,K)AlSi
 
3
O
 
8
9.FA.30Buddingtonite
(NH
 
4
)AlSi
 
3
O
 
8
9.FA.30Celsian
BaAl
 
2
Si
 
2
O
 
8
9.FA.30Hyalophane
(K,Ba)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.30Microcline
KAlSi
 
3
O
 
8
9.FA.30Orthoclase
KAlSi
 
3
O
 
8
9.FA.30Sanidine
KAlSi
 
3
O
 
8
9.FA.30Rubicline
(Rb,K)AlSi
 
3
O
 
8
9.FA.30Monalbite
NaAlSi
 
3
O
 
8
9.FA.35Albite
NaAlSi
 
3
O
 
8
9.FA.35Andesine
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Anorthite
CaAl
 
2
Si
 
2
O
 
8
9.FA.35Bytownite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Labradorite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Oligoclase
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Reedmergnerite
Na[BSi
 
3
O
 
8
]
9.FA.40Paracelsian
BaAl
 
2
Si
 
2
O
 
8
9.FA.45Svyatoslavite
CaAl
 
2
Si
 
2
O
 
8
9.FA.45Kumdykolite
NaAlSi
 
3
O
 
8
9.FA.50Slawsonite
(Sr,Ca)Al
 
2
Si
 
2
O
 
8
9.FA.55Lisetite
CaNa
 
2
Al
 
4
Si
 
4
O
 
16
9.FA.60Banalsite
BaNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.60Stronalsite
SrNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.65Danburite
CaB
 
2
Si
 
2
O
 
8
9.FA.65Maleevite
BaB
 
2
Si
 
2
O
 
8
9.FA.65Pekovite
SrB
 
2
Si
 
2
O
 
8
9.FA.70Lingunite
(Na,Ca)AlSi
 
3
O
 
8
9.FA.75Kokchetavite
KAlSi
 
3
O
 
8
Related Minerals - Hey's Index Grouping:

- +
16.4.1Nepheline
(Na,K)AlSiO
 
4
16.4.3Trikalsilite
(Na,K)AlSiO
 
4
16.4.4Anorthoclase
(Na,K)AlSi
 
3
O
 
8
16.4.5Naujakasite
(Na,K)
 
6
(Fe
2+
 
,Mn
2+
 
,Ca)(Al,Fe)
 
4
Si
 
8
O
 
26
16.4.6Montesommaite
(K,Na)
 
9
Al
 
9
Si
 
23
O
 
64
 · 10H
 
2
O

Other Names for Panunzite

Synonyms:
IMA1978-050
Other Languages:
German:Panunzit
Russian:Панунцит
Spanish:Panunzita

Other Information

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 Panunzite

Reference List:

- +
American Mineralogist (1957): 42: 286.

American Mineralogist (1979): 64: 658.

Merlino S., Franco E., Mattia C.A., Pasero M., De Gennaro M.(1985) : The crystal structure of panunzite (natural tetrakalsilite). Neues Jahrbuch für Mineralogie, Monatshefte: 7: 322-328.

American Mineralogist (1988): 73: 420-421.

Internet Links for Panunzite

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    • Localities for Panunzite

    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
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    		[Amer.Min.(1988) 73, 420-421; Lapis 1994:5 p.13-23,58]
    • Umbria
      • Terni Province
        • Marsciano
          • San Venanzo
    		Ciriotti, M.E., Fascio, L., Pasero, M. (2004): Italian Type Minerals. Felici, Ed. Pisa, CD-ROM
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