Al2F2Na2O8P2
Amblygonite · Montebrasite
Amblygonite is a phosphate mineral that typically forms in granite pegmatites. It serves as a significant source of lithium and is often collected for its aesthetic properties in mineralogy.

Key Properties
Cross-validated computational properties for Amblygonite, aggregated across 3 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 Al2F2Na2O8P2, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 5.44 | 0.0054 | -7.109 | 3.19 |
| C2/c (No. 15) | — | — | — | — | — |
| — | — | — | — | — | 3.19 |
Applications
Where Amblygonite is used.
Frequently Asked Questions
Common questions about Amblygonite, answered from cross-validated data.
What is Al2F2Na2O8P2?
Amblygonite is a phosphate mineral that typically forms in granite pegmatites. It serves as a significant source of lithium and is often collected for its aesthetic properties in mineralogy.
What is Al2F2Na2O8P2 used for?
What is the band gap of Al2F2Na2O8P2?
Is Al2F2Na2O8P2 a metal, semiconductor, or insulator?
Is Al2F2Na2O8P2 thermodynamically stable?
What is the crystal structure of Al2F2Na2O8P2?
What is the density of Al2F2Na2O8P2?
How many polymorphs of Al2F2Na2O8P2 are known?
What elements does Al2F2Na2O8P2 contain?
Where does the data for Al2F2Na2O8P2 come from?
Related Compounds
Other NASICON-Type Electrolytes in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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