O24Pb8S16
Lanarkite · Lead(II) sulfate-oxide
Lanarkite is a rare lead mineral that forms as a secondary mineral in the oxidation zones of lead-bearing ore deposits. It is primarily studied by mineralogists and collectors due to its distinct crystal structure and chemical composition.
OPbS
Overview
Key Properties
Cross-validated computational properties for Lanarkite, 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.
3.52 eV
Range across DFT structures
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.
0.102 eV/atom
Best (lowest) across sources
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.
Above hull
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
5
3 databases, 1 space group
Crystallography
Reported Structures
Lowest-energy structures reported for O24Pb8S16, 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. |
|---|---|---|---|---|---|
| Pbca (No. 61) | orthorhombic | 3.52 | 0.1025 | -5.880 | 4.98 |
| Pbca (No. 61) | — | — | — | — | — |
| Pbca (No. 61) | — | — | — | — | — |
| Pbca (No. 61) | orthorhombic | — | — | — | 0.66 |
| Pbca (No. 61) | orthorhombic | — | — | — | 0.66 |
Uses
Applications
Where Lanarkite is used.
Mineralogical researchGeological specimen collection
Reference
Frequently Asked Questions
Common questions about Lanarkite, answered from cross-validated data.
What is O24Pb8S16?
Lanarkite is a rare lead mineral that forms as a secondary mineral in the oxidation zones of lead-bearing ore deposits. It is primarily studied by mineralogists and collectors due to its distinct crystal structure and chemical composition.
What is O24Pb8S16 used for?
Lanarkite (O24Pb8S16) is used in mineralogical research and geological specimen collection.
What is the band gap of O24Pb8S16?
Lanarkite (O24Pb8S16) has a DFT-computed band gap of 3.52 eV across 5 reported structures.
Is O24Pb8S16 a metal, semiconductor, or insulator?
With a wide band gap up to 3.52 eV it is an insulator / wide-band-gap material.
Is O24Pb8S16 thermodynamically stable?
Lanarkite (O24Pb8S16) has a lowest energy above hull of 0.102 eV/atom (above hull).
What is the crystal structure of O24Pb8S16?
The lowest-energy reported polymorph of Lanarkite (O24Pb8S16) is orthorhombic symmetry, space group Pbca (No. 61).
What is the density of O24Pb8S16?
The computed density of the ground-state structure of Lanarkite (O24Pb8S16) is 4.98 g/cm³.
How many polymorphs of O24Pb8S16 are known?
5 structures of O24Pb8S16 are reported across 3 databases, spanning 1 distinct space group.
What elements does O24Pb8S16 contain?
Lanarkite (O24Pb8S16) contains O, Pb, and S (3 elements).
Where does the data for O24Pb8S16 come from?
O24Pb8S16 data is cross-referenced from materials_project, aflow, cod.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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