Pitiglianoite
A valid IMA mineral species
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About Pitiglianoite
Formula:
Na6K2(Al6Si6O24)(SO4) · 2H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.37
Crystal System:
Hexagonal
Member of:
Name:
Named for town of Pitigliano, Italy, near the type locality.
Type Locality:
Unique Identifiers
Mindat ID:
3223
Long-form identifier:
mindat:1:1:3223:6
GUID
(UUID V4):
(UUID V4):
da6e5738-4c9a-4cfa-b4aa-639edaa0b799
IMA Classification of Pitiglianoite
Approved
IMA Formula:
K2Na6(Si6Al6)O24(SO4) · 2H2O
Approval year:
1990
First published:
1991
Classification of Pitiglianoite
9.FB.05
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
76.2.5.11
76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
17.10.2
17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Pgl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Pitiglianoite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Fracture:
Sub-Conchoidal
Density:
2.37(4) g/cm3 (Measured) 2.394 g/cm3 (Calculated)
Optical Data of Pitiglianoite
Type:
Uniaxial (-)
RI values:
nω = 1.508(1) nε = 1.506(1)
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Chemistry of Pitiglianoite
Mindat Formula:
Na6K2(Al6Si6O24)(SO4) · 2H2O
Crystallography of Pitiglianoite
Crystal System:
Hexagonal
Class (H-M):
6 - Pyramidal
Space Group:
P63
Cell Parameters:
a = 22.121(3) Å, c = 5.221(1) Å
Ratio:
a:c = 1 : 0.236
Unit Cell V:
2,212.55 ų (Calculated from Unit Cell)
Z:
3
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0001438 | Pitiglianoite | Merlino S, Mellini M, Bonaccorsi E, Pasero M, Leoni L, Orlandi P (1991) Pitiglianoite, a new feldspathoid from southern Tuscany, Italy: Chemical composition and crystal structure American Mineralogist 76 2003-2008 | 1991 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.77 Å | (very strong) |
3.27 Å | (very strong) |
6.39 Å | (strong) |
3.69 Å | (medium) |
2.769 Å | (medium) |
2.650 Å | (medium) |
5.54 Å | (weak) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
31 : Thermally altered carbonate, phosphate, and iron formations | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Pitiglianoite
General Appearance of Type Material:
Hexagonal prisms up to 4 mm long and 1 mm in diameter.
Place of Conservation of Type Material:
University of Pisa, Pisa, Italy
Geological Setting of Type Material:
Metasomatized blocks of volcanic ejecta.
Associated Minerals at Type Locality:
Reference:
Merlino, S., Mellini, M., Bonaccorsi, E., Pasero, M., Leoni, L., Orlandi, P. (1991) Pitiglianoite, a new feldspathoid from southern Tuscany, Italy: chemical composition and crystal structure. American Mineralogist: 76: 2003-2008.
Synonyms of Pitiglianoite
Other Language Names for Pitiglianoite
Relationship of Pitiglianoite to other Species
Member of:
Other Members of this group:
Afghanite | (Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6 | Trig. 3m : P3 1c |
Alloriite | (Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6 | Trig. 3m : P3 1c |
Balliranoite | (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) | Hex. 6 : P63 |
Betzite | Na6Ca2(Al6Si6O24)Cl4 | Hex. 6 : P63 |
Biachellaite | (Na,Ca,K)8(Al6Si6O24)(SO4)2(OH)0.5 · H2O | Trig. 3 : P3 |
Bystrite | (Na,K)7Ca(Al6Si6O24)(S5)Cl | Trig. 3m : P3 1c |
Cancrinite | (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O | Hex. 6 : P63 |
Cancrisilite | Na7(Al5Si7O24)(CO3) · 3H2O | Hex. 6mm : P63mc |
Carbobystrite | Na8(Al6Si6O24)(CO3) · 3.5H2O | Trig. 3m : P3 1c |
Davyne | (Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2 | Hex. 6/m : P63/m |
Depmeierite | Na8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x | Hex. 6 : P63 |
Fantappièite | [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33 · 4H2O | Trig. 3 : R3 |
Farneseite | (Na,Ca,K)56(Al6Si6O24)7(SO4)12 · 6H2O | Hex. 6/m : P63/m |
Franzinite | (Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2O | Hex. |
Giuseppettite | (Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2 | Trig. 3m : P3 1c |
Hydroxycancrinite | Na8(Al6Si6O24)(OH)2 · 2H2O | Hex. 6 : P63 |
Kircherite | Na5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2O | Trig. 3 2 : R3 2 |
Kyanoxalite | Na7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5) | Hex. 6 : P63 |
Liottite | (Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4 | Hex. 6 : P6 |
Marinellite | (Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2O | Trig. 3m : P3 1c |
Microsommite | Na4K2Ca2(Al6Si6O24)(SO4)Cl2 | Hex. 6 2 2 : P63 2 2 |
Quadridavyne | (Na,K)6Ca2(Al6Si6O24)Cl4 | Hex. 6/m : P63/m |
Sacrofanite | (Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6 · 2H2O | Hex. |
Slyudyankaite | Na28Ca4(Si24Al24O96)(SO4)6(S6)1/3(CO2) · 2H2O | Tric. 1 : P1 |
Steudelite | Na3(K17Ca7)Ca4(Al24Si24O96)(SO3)6F6 · 4H2O | Hex. 6 m2 : P62c |
Sulfhydrylbystrite | Na5K2Ca[Al6Si6O24](S5)2(SH) | Trig. 3m : P3 1c |
Tounkite | (Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2O | Hex. 6 2 2 : P62 2 2 |
UM2004-48-SiO:AlClCaNaS | (Na,Ca)8(Si6Al6)O24(SO4)1.7Cl1.3 | |
UM2009-23-SiO:AlCCaClHKNaS | (Na,Ca)24K10[(Si,Al)60O120](SO4)5.6Cl1.5(CO3)0.4 · 11H2O | Trig. 3 : P3 |
Vishnevite | (Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2O | Hex. 6 : P63 |
Related Minerals - Strunz-mindat Grouping
9.FB. | Steudelite | Na3(K17Ca7)Ca4(Al24Si24O96)(SO3)6F6 · 4H2O |
9.FB. | Sapozhnikovite | Na8(Al6Si6O24)(HS)2 |
9.FB. | Betzite | Na6Ca2(Al6Si6O24)Cl4 |
9.FB. | Slyudyankaite | Na28Ca4(Si24Al24O96)(SO4)6(S6)1/3(CO2) · 2H2O |
9.FB. | Bolotinaite | (Na7◻)(Al6Si6O24)F · 4H2O |
9.FB. | Wenlanzhangite-(Y) | Y2V3+2V4+2(SiO4)2O4(OH)4 |
9.FB.05 | Afghanite | (Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6 |
9.FB.05 | Bystrite | (Na,K)7Ca(Al6Si6O24)(S5)Cl |
9.FB.05 | Cancrinite | (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O |
9.FB.05 | Cancrisilite | Na7(Al5Si7O24)(CO3) · 3H2O |
9.FB.05 | Davyne | (Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2 |
9.FB.05 | Franzinite | (Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2O |
9.FB.05 | Giuseppettite | (Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2 |
9.FB.05 | Hydroxycancrinite | Na8(Al6Si6O24)(OH)2 · 2H2O |
9.FB.05 | Liottite | (Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4 |
9.FB.05 | Microsommite | Na4K2Ca2(Al6Si6O24)(SO4)Cl2 |
9.FB.05 | Quadridavyne | (Na,K)6Ca2(Al6Si6O24)Cl4 |
9.FB.05 | Sacrofanite | (Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6 · 2H2O |
9.FB.05 | Tounkite | (Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2O |
9.FB.05 | Vishnevite | (Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2O |
9.FB.05 | Marinellite | (Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2O |
9.FB.05 | Farneseite | (Na,Ca,K)56(Al6Si6O24)7(SO4)12 · 6H2O |
9.FB.05 | Alloriite | (Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6 |
9.FB.05 | Biachellaite | (Na,Ca,K)8(Al6Si6O24)(SO4)2(OH)0.5 · H2O |
9.FB.05 | Fantappièite | [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33 · 4H2O |
9.FB.05 | Kyanoxalite | Na7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5) |
9.FB.05 | Balliranoite | (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) |
9.FB.05 | Carbobystrite | Na8(Al6Si6O24)(CO3) · 3.5H2O |
9.FB.05 | Depmeierite | Na8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x |
9.FB.05 | Kircherite | Na5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2O |
9.FB.05 | Sulfhydrylbystrite | Na5K2Ca[Al6Si6O24](S5)2(SH) |
9.FB.10 | Bicchulite | Ca2(Al2SiO6)(OH)2 |
9.FB.10 | Danalite | Be3Fe2+4(SiO4)3S |
9.FB.10 | Genthelvite | Be3Zn4(SiO4)3S |
9.FB.10 va | Hackmanite | Na8Al6Si6O24(Cl2,S) |
9.FB.10 | Haüyne | Na3Ca(Si3Al3)O12(SO4) |
9.FB.10 | Helvine | Be3Mn2+4(SiO4)3S |
9.FB.10 | Kamaishilite | Ca2(Al2SiO6)(OH)2 |
9.FB.10 | Lazurite | Na7Ca(Al6Si6O24)(SO4)(S3) · H2O |
9.FB.10 | Nosean | Na8(Al6Si6O24)(SO4) · H2O |
9.FB.10 | Sodalite | Na4(Si3Al3)O12Cl |
9.FB.10 | Tsaregorodtsevite | (N(CH3)4)(AlSi5O12) |
9.FB.10 | Tugtupite | Na4BeAlSi4O12Cl |
9.FB.10 | Vladimirivanovite | Na6Ca2(Al6Si6O24)(SO4,S3,S2,Cl)2 · H2O |
9.FB.15 | Marialite | Na4Al3Si9O24Cl |
9.FB.15 | Meionite | Ca4Al6Si6O24CO3 |
9.FB.15 | Silvialite | (Ca,Na)4(Al6Si6O24)(SO4,CO3) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Pitiglianoite
mindat.org URL:
https://www.mindat.org/min-3223.html
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References for Pitiglianoite
Localities for Pitiglianoite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Austria | |
| Postl et al. (2020) |
Germany | |
| Blass (2022) |
Italy | |
| Della Ventura et al. (2005) |
| Di Domenico Dario |
| Luigi Mattei collection |
| Christophe Boutry collection |
| Merlino et al. (1991) |
Sandro Maggia collection | |
South Africa | |
| Kamenetsky et al. (2014) |
USA | |
| Kuehner et al. (2003, June) |
Quick NavTopAbout PitiglianoiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsStrunz-MindatOther InformationInternet Links References Localities Locality List
Farnese, Viterbo Province, Lazio, Italy