Kaliophilite
A valid IMA mineral species - grandfathered
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About Kaliophilite
Formula:
KAlSiO4
Colour:
Colorless
Lustre:
Silky
Hardness:
5½ - 6
Specific Gravity:
2.493 - 2.649
Crystal System:
Trigonal
Name:
Named for the Greek for potassium, kalium, and for friendship/friend, philia/philios.
Dimorph of:
The kaliophilite framework is a variant of the tridymite topology, with alternating SiO4 and AlO4 tetrahedra forming sheets of six-membered rings (63 nets), which are connected along [001] by sharing the apical oxygen atoms (Mugnaioli et al., 2020).
The occurrence of some Na for K substitution (3–10%) may be related to the characteristic structural features of kaliophilite (Mugnaioli et al., 2020).
The occurrence of some Na for K substitution (3–10%) may be related to the characteristic structural features of kaliophilite (Mugnaioli et al., 2020).
Unique Identifiers
Mindat ID:
2139
Long-form identifier:
mindat:1:1:2139:1
GUID
(UUID V4):
(UUID V4):
7f170d8a-1a4b-433b-bff8-734a98b87a1b
IMA Classification of Kaliophilite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1887
Classification of Kaliophilite
9.FA.05
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.2.1.5
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
16.3.2
16 : Silicates Containing Aluminum and other Metals
3 : Aluminosilicates of K
16 : Silicates Containing Aluminum and other Metals
3 : Aluminosilicates of K
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 |
|---|---|---|
| Klp | 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 Kaliophilite
Silky
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{0001}
{0001}
Density:
2.493 - 2.649 g/cm3 (Measured) 2.65 g/cm3 (Calculated)
Optical Data of Kaliophilite
Type:
Uniaxial (-)
RI values:
nω = 1.532 nε = 1.527
Max Birefringence:
δ = 0.005
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 Kaliophilite
Mindat Formula:
KAlSiO4
Elements listed:
Common Impurities:
Fe,Ca,Na
Crystallography of Kaliophilite
Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
P3
Cell Parameters:
a = 27.0597(16) Å, c = 8.5587(6) Å
Ratio:
a:c = 1 : 0.316
Unit Cell V:
100.5 ų
Z:
54
Comment:
Microtwinning was observed. Previous cell data given: 26.93, 8.52 Å. Originally assumed to have space group P6322.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.09 Å | (100) |
| 2.593 Å | (30) |
| 2.131 Å | (25) |
| 4.26 Å | (15) |
| 3.76 Å | (12) |
| 3.02 Å | (12) |
| 2.814 Å | (12D) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 9 : Lava/xenolith minerals (hornfels, sanidinite facies) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Kaliophilite
Geological Setting of Type Material:
In blocks of biotite-pyroxenite volcanic ejecta.
Reference:
Mierisch, B. (1887) Die auswurfsblöcke des Monte Somma. Mineralogische und Petrographische Mittheilungen: 8: 113-189.
Synonyms of Kaliophilite
Other Language Names for Kaliophilite
German:Faccellit
Facellit
Kaliophilit
Facellit
Kaliophilit
Spanish:Faccellita
Facellita
Kaliophilita
Facellita
Kaliophilita
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 9.FA. | Hexacelsian | BaAl2Si2O8 |
| 9.FA. | Wodegongjieite | KCa3(Al7Si9)O32 |
| 9.FA.05 | Kalsilite | KAlSiO4 |
| 9.FA.05 | Nepheline | Na3K(Al4Si4O16) |
| 9.FA.05 | Panunzite | (K,Na)AlSiO4 |
| 9.FA.05 | Trikalsilite | K2NaAl3(SiO4)3 |
| 9.FA.05 | Yoshiokaite | (Ca,Na)[Al(Al,Si)O4] |
| 9.FA.05 | Carnegieite | NaAlSiO4 |
| 9.FA.05 va | Germanate-nepheline | (Na,K)AlGeO4 |
| 9.FA.05 | Megakalsilite | KAlSiO4 |
| 9.FA.05 | Trinepheline | NaAlSiO4 |
| 9.FA.05 | Davidsmithite | (Ca,◻)2Na6Al8Si8O32 |
| 9.FA.10 | Malinkoite | NaBSiO4 |
| 9.FA.15 | Virgilite | LiAlSi2O6 |
| 9.FA.25 | Lisitsynite | KBSi2O6 |
| 9.FA.30 | Buddingtonite | (NH4)(AlSi3O8) |
| 9.FA.30 | Celsian | Ba(Al2Si2O8) |
| 9.FA.30 | Microcline | K(AlSi3O8) |
| 9.FA.30 | Orthoclase | K(AlSi3O8) |
| 9.FA.30 | Sanidine | K(AlSi3O8) |
| 9.FA.30 | Rubicline | Rb(AlSi3O8) |
| 9.FA.30 va | Germanate-celsian | BaAl2Ge2O8 |
| 9.FA.30 | Monalbite | NaAlSi3O8 |
| 9.FA.30 | Ferrisanidine | K[Fe3+Si3O8] |
| 9.FA.35 | Albite | Na(AlSi3O8) |
| 9.FA.35 | Anorthite | Ca(Al2Si2O8) |
| 9.FA.35 | Reedmergnerite | NaBSi3O8 |
| 9.FA.40 | Paracelsian | Ba(Al2Si2O8) |
| 9.FA.45 | Svyatoslavite | Ca(Al2Si2O8) |
| 9.FA.45 | Kumdykolite | Na(AlSi3O8) |
| 9.FA.50 | Slawsonite | Sr(Al2Si2O8) |
| 9.FA.55 | Lisetite | CaNa2Al4Si4O16 |
| 9.FA.60 | Banalsite | Na2BaAl4Si4O16 |
| 9.FA.60 | Stronalsite | Na2SrAl4Si4O16 |
| 9.FA.65 | Danburite | CaB2Si2O8 |
| 9.FA.65 | Maleevite | BaB2Si2O8 |
| 9.FA.65 | Pekovite | SrB2Si2O8 |
| 9.FA.70 | Stöfflerite | CaAl2Si2O8 |
| 9.FA.70 | Lingunite | (Na,Ca)AlSi3O8 |
| 9.FA.70 | Liebermannite | KAlSi3O8 |
| 9.FA.75 | Kokchetavite | K(AlSi3O8) |
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 Kaliophilite
mindat.org URL:
https://www.mindat.org/min-2139.html
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References for Kaliophilite
Reference List:
Localities for Kaliophilite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Italy (TL) | |
| Lapis 1994:5 p.13-23 +1 other reference |
| Russo et al. (2004) |
| Gruppo Mineralogico Geologico ... | |
| Fratangeli G. (1996) |
| Barbieri et al. (1970) |
| Tilley et al. (1953) |
| Christof Schäfer |
| Giovanni Fraccaro collection |
| Del Caldo (1971) +1 other reference |
| Gentile P. (1985) |
| Di Battistini et al. (2001) |
USA | |
| Hitchcock (1900) |
Quick NavTopAbout KaliophiliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Lagno di Pollena, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy