Lechatelierite

SiO2
IMA status
  • Approved
  • Grandfathered
  • Questionable
IMA symbol
Lch
Also known as
  • Kieselglas
  • Leszaterjeryt
  • Libyanit
  • +2 more

Where it forms, where it's found

48recorded occurrences
Source · OpenStreetMap

Physical

Hardness
123456789106.5/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond

Crystallography

Crystal system
Amorphous
Comment

Amorphous

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen215.99931.998
53.26%
14SiSiliconSilicon128.08528.085
46.74%
Total60.083100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From IMA formula

Synonyms

  • Kieselglas
  • Leszaterjeryt
  • Libyanit
  • Libyanita
  • Libyanite

In other languages

French
lechateliérite
German
Lechatelierit
Spanish
Lechatelierita
Italian
Lechatelierite
Portuguese
lechatelierite
Japanese
ルシャトリエライト
Chinese
焦石英
Russian
Лешательерит
Arabic
ليتشاتيليريت

Classification

Strunz
10th ed.

4.DA.30

  • 4OxidesClass
  • 4.DMetal: Oxygen = 1:2 and similarDivision
  • 4.DAWith small cations: Silica familyGroup
  • 4.DA.30LechatelieriteSpecies
CIM

7.8.6

  • 7Oxides and HydroxidesClass
  • 7.8Oxides of SiGroup
  • 7.8.6LechatelieriteSpecies

Group, growth & confusion

Literature, links & citation

Citations
  1. 1915Lacroix A (1915) La silice fondue considérée comme minéral (lechateliérite). Bulletin de la Société Française de Minéralogie 38, 182-186
  2. 1930Rogers, A.F. (1930) A unique occurrence of lechatelierite or silica glass, American Journal of Science: 19: 195-202.
  3. 1962Frondel, Clifford (1962) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume III: 325.
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Lechatelierite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/lechatelierite-2363},
  note      = {Accessed 2026-05-11}
}