KAlSiO4
Kaliophilite · Kalsilite
Kaliophilite is a stable, insulating potassium aluminosilicate mineral that provides essential insights into the structural behavior of zeolite-like frameworks.
About Kaliophilite
KAlSiO4 is a thermodynamically stable aluminosilicate that serves as a fundamental building block in the study of zeolite frameworks and related mineral structures. Its insulating electronic character and robust structural integrity make it a significant subject for researchers investigating complex crystalline architectures.
Due to its high structural diversity, this compound is frequently analyzed to understand how alkali metal ions influence the stability and geometry of silicate frameworks. It remains a critical reference point in materials science for exploring the phase relationships within the potassium-aluminum-silicate system.
Key Properties
Cross-validated computational properties for Kaliophilite, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for KAlSiO4, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P63 (No. 173) | hexagonal | 4.70 | 0.0000 | -7.485 | 2.54 |
| P21 (No. 4) | monoclinic | 4.76 | 0.0013 | -7.484 | 2.62 |
| P31c (No. 159) | trigonal | 4.50 | 0.0018 | -7.483 | 2.50 |
| P63 (No. 173) | hexagonal | 4.50 | 0.0022 | -7.483 | 2.50 |
| P1 (No. 1) | triclinic | 4.52 | 0.0025 | -7.483 | 2.50 |
| P3 (No. 143) | trigonal | 2.69 | 0.3563 | -7.129 | 2.19 |
| P63 (No. 173) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.55 |
| No. 0 | unknown | — | — | — | 0.56 |
| No. 0 | unknown | — | — | — | 0.56 |
| No. 0 | unknown | — | — | — | 0.56 |
| No. 0 | unknown | — | — | — | 0.56 |
Applications
Where Kaliophilite is used.
Frequently Asked Questions
Common questions about Kaliophilite, answered from cross-validated data.
What is KAlSiO4?
Kaliophilite is a stable, insulating potassium aluminosilicate mineral that provides essential insights into the structural behavior of zeolite-like frameworks.
What is KAlSiO4 used for?
What is the band gap of KAlSiO4?
Is KAlSiO4 a metal, semiconductor, or insulator?
Is KAlSiO4 thermodynamically stable?
What is the crystal structure of KAlSiO4?
What is the density of KAlSiO4?
How many polymorphs of KAlSiO4 are known?
What elements does KAlSiO4 contain?
Where does the data for KAlSiO4 come from?
How It Compares
Within the aluminosilicates and zeolite frameworks class.
Within the diverse family of aluminosilicates, KAlSiO4 occupies a distinct niche compared to structural relatives like LiAlSiO4 or NaAlSi3O8. While many of its siblings exhibit varying degrees of hydration or different framework topologies, KAlSiO4 is recognized for its notable thermodynamic stability on the convex hull, positioning it as a highly reliable structural archetype among complex silicates.
Related Compounds
Other Aluminosilicates and Zeolite Frameworks in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- mpaloe — Data from mpaloe.
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