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 (3â10%) may be related to the characteristic structural features of kaliophilite (Mugnaioli et al., 2020).
The occurrence of some Na for K substitution (3â10%) 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 IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Klp | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC 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 Ă
Âł
Z:
54
Comment:
Microtwinning was observed. Previous cell data given: 26.93, 8.52 â«. Originally assumed to have space group P6322.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.09 Ă | (100) |
2.593 Ă | (30) |
2.131 Ă | (25) |
4.26 Ă | (15) |
3.76 Ă | (12) |
3.02 Ă | (12) |
2.814 Ă | (12D) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earthâs 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,â»)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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Please feel free to link to this page.
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References for Kaliophilite
Reference List:
Localities for Kaliophilite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
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 SchÀfer |
| 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