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Lechatelierite

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Formula:
SiO2
Hardness:
Name:
Named after Henry Louis Le Chatelier (Paris, 8 October 1850 – Miribel-les-Échelles, France, 17 September 1936). He is known for Le Chatelier’s principle, which makes it possible to predict the effect a change of conditions (such as temperature, pressure, or concentration of reaction components) will have on a chemical reaction. His principle proved invaluable in the chemical industry for developing the most-efficient chemical processes.
A natural fused, X-ray amorphous silica.
Originates when lightning strikes sand or other very SiO2-rich sediments and rocks.
Lechatelierites/fulgurites form hollow tubes that are often irregular and branched.
Also forms on impact of meteorites as a result of sand melting.

The major component of the impact glass called Libyan Desert Glass.


Classification of Lechatelierite

Approved, 'Grandfathered' (first described prior to 1959), Questionable
4.DA.30

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
A : With small cations: Silica family
7.8.6

7 : Oxides and Hydroxides
8 : Oxides of Si

Lechatelierite in petrology

An essential component of (items highlighted in red)

Physical Properties of Lechatelierite

Hardness (Mohs):

Chemical Properties of Lechatelierite

Formula:
SiO2
Elements listed in formula:

Relationship of Lechatelierite to other Species

4.DA.Carbon Dioxide IceCO2
4.DA.05QuartzSiO2
4.DA.10OpalSiO2 · nH2O
4.DA.10TridymiteSiO2
4.DA.15CristobaliteSiO2
4.DA.20MogániteSiO2 · nH2O
4.DA.25MelanophlogiteC2H17O5 · Si46O92
4.DA.35CoesiteSiO2
4.DA.40StishoviteSiO2
4.DA.45KeatiteSiO2
4.DA.50SeifertiteSiO2
7.8.1QuartzSiO2
7.8.2CoesiteSiO2
7.8.3TridymiteSiO2
7.8.4StishoviteSiO2
7.8.5CristobaliteSiO2
7.8.7SilhydriteSi3O6 · H2O
7.8.8OpalSiO2 · nH2O
7.8.9MogániteSiO2 · nH2O

Other Names for Lechatelierite

Name in Other Languages:

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.

References for Lechatelierite

Reference List:
Rogers, A.F. (1930), A unique occurrence of lechatelierite or silica glass, American Journal of Science: 19: 195-202.

Frondel, Clifford (1962), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume III: 325.

Internet Links for Lechatelierite

mindat.org URL:
http://www.mindat.org/min-2363.html
Please feel free to link to this page.

Localities for Lechatelierite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • New South Wales
    • Rous Co.
Steve Sorrell collection
  • Victoria
    • Moyne Shire
      • Mortlake
Judy Rowe collection
  • Western Australia
    • Kalgoorlie-Boulder Shire
Gifford, A. C. (1999). Clay soil fulgurites in the Eastern Goldfields of Western Australia. Journal of the Royal Society of Western Australia, 82, 165-168.
Gifford, A. C. (1999). Clay soil fulgurites in the Eastern Goldfields of Western Australia. Journal of the Royal Society of Western Australia, 82, 165-168.
Austria
 
  • Salzburg
    • Hohe Tauern
      • Fusch valley
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Kirchner, E.Ch., Topa, D. & Simonsberger, P. (2011): Fulgurit vom Brennkogel, Salzburg. Miner. Arch. Salzb., 14, 297-30.
  • Tyrol
    • North Tyrol
      • Ötz valley
        • Umhausen
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Belgium
 
Canada
 
  • Saskatchewan
Yale Peabody Museum
Czech Republic
 
  • Moravia (Mähren; Maehren)
    • South Moravia Region
      • Oslavany
Hršelová, P., Cempírek, J., Houzar, S., Sejkora, J. (2013): S,F,Cl-rich mineral assemblages from burned spoil heaps in the Rosice-Oslavany coalfield, Czech Republic. Can. Mineral.: 51(1): 171-188
Egypt
 
  • Matruh Governorate
Rob Lavinsky
http://www.lpi.usra.edu/meetings/lpsc2007/pdf/1346.pdf; Ted E. Bunch, Robert E. Hermes, Andrew M.T. Moore, Douglas J. Kennett, James C. Weaver, James H. Wittke, Paul S. DeCarli, James L. Bischoff, Gordon C. Hillman, George A. Howard, David R. Kimbel, Gunther Kletetschka, Carl P. Lipo, Sachiko Sakai, Zsolt Revay, Allen West, Richard B. Firestone, and James P. Kennett (2012) Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago. PNAS 2012 109 (28) E1903-E1912
    • Great Sand Sea
Rock Currier
Germany
 
  • Lower Saxony
    • Celle
      • Sprakensehl
  • North Rhine-Westphalia
    • Eastern Westphalia
      • Gütersloh
Rocks & Min., Jan/Feb. 1980
Th. Thieme collection
  • Saxony
India
 
  • Tamil Nadu
    • Periyar District
Current Science 75 (8): 763 (1998)
Japan
 
  • Hokkaido
http://cam.arts.usf.edu/McCollumPDF/16.VoltTrig.pdf.
Libya
 
  • Al Kufrah District
Mauritania
collection jm.CLAUDE
Morocco
 
  • Guelmim-Es Semara Region
    • Es Semara Province
Ben Youssef Malek specimen
Namibia
 
  • Karas Region
    • Lüderitz District
Meteoritics & Planetary Science 43, Nr 7, 1201–1218 (2008)
Netherlands
 
  • Gelderland
    • Hattem
T.G. Nijland, J.C. Zwaan, D. Visser, J. Leloux - De mineralen van Nederland - 2007
    • Veluwe
Tinbergen, N. (1984). Curious naturalists. Univ of Massachusetts Press.
  • Overijssel
    • Vasse
T.G. Nijland, J.C. Zwaan, D. Visser, J. Leloux - De mineralen van Nederland - 2007
Niger
 
Wolfgang Hempel specimen
Portugal
 
  • Bragança District
    • Torre de Moncorvo
      • Horta da Vilariça
Martins da Pedra collection
Russia
 
  • Northern Region
    • Karelia Republic
http://camb.demonhosting.co.uk/JConfAbs/6/PCM3.pdf.
UK
 
  • England
    • Cheshire
USA
 
  • Arizona
    • Coconino Co.
      • San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts)
        • Flagstaff area
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 274; Davis, D.G. & W. Breed (1968), Rock fulgurites on the San Francisco Peaks, AZ, Plateau (quarterly of Museum of northern Arizona): 41: 34.
      • Winslow
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 274; Rogers, A.F. (1930), A unique occurrence of lechatelierite or silica glass, Amer. Jour. Sci.: 19: 195-202; Kerr, 1977. Optical Mineralogy, p.283.
    • La Paz Co.
      • Plomosa Mts
        • Plomosa District
    • Pima Co.
azminerals.com
  • California
    • Kern Co.
      • Cove District
        • Kernville
Mineralogical Rearch Company.
Ed Richardson collection
Jour. Geol., 54, no. 2, 117-122 (1946)
Rogers, A. F. (1946). Sand fulgurites with enclosed lechatelierite from Riverside County, California. The Journal of Geology, 117-122.
Rogers, Austin Flint (1946), Sand fulgurites with enclosed lechatelierite from Riverside County, California: Journal of Geology: 54: 117-122; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 163, 241.
  • Connecticut
    • Hartford Co.
Lunar and Planetary Science XXXIV (2003)
John Burnham
  • Florida
    • Clay Co.
Marc V. Hurst, P.G. (2010) Central Florida's Sand Mining District. Guidebook for Field Trip of September 13, 2010. AIPG 47th Annual Meeting & Conference
Matthew Pasek & Kristin Block (2009) Lightning-induced reduction of phosphorus oxidation state. Nature Geoscience 2:553-556
    • Polk Co.
Marc V. Hurst, P.G. (2010) Central Florida's Sand Mining District. Guidebook for Field Trip of September 13, 2010. AIPG 47th Annual Meeting & Conference
Marc V. Hurst, P.G. (2010) Central Florida's Sand Mining District. Guidebook for Field Trip of September 13, 2010. AIPG 47th Annual Meeting & Conference
Marc V. Hurst, P.G. (2010) Central Florida's Sand Mining District. Guidebook for Field Trip of September 13, 2010. AIPG 47th Annual Meeting & Conference
  • Massachusetts
    • Franklin Co.
Rocks & Min., Jan/Feb. 1980
    • Worcester Co.
      • Oxford
Patricia Berry Barker collection, no. 1610.
  • Michigan
    • Livingston Co.
Mineralogy of Michigan (2004) Heinrich & Robinson
  • Nebraska
  • Nevada
    • Lyon Co.
      • Singatse Range
        • Yerington District
Yale Peabody Museum
    • Nye Co.
      • Toquima Range
Yale Peabody Museum
  • New Jersey
    • Middlesex Co.
AmMin 10:152-155
  • New Mexico
Mineral Museum Soccoro, New Mexico
  • New York
    • Oneida Co.
  • North Carolina
    • Dare Co.
Rocks & Min: Nov, 1945.
  • Oregon
    • Deschutes Co.
    • Douglas Co.
California Geology, Nov. 1986.
  • Pennsylvania
    • York Co.
Pasek, M.A., Block, K. & Pasek, V. (2012): Fulgurite morphology: a classification scheme and clues to formation. Contributions to Mineralogy and Petrology, 164, 477-492.
Yale Peabody Museum
    • Lexington Co.
  • Texas
Mineralogical Research Co. specimens.
  • West Virginia
    • Hampshire Co.
Lunar and Planetary Science XXXVII (2006) LIGHTNING STRIKE GLASSES AS AN ANALOG FOR IMPACT GLASSES: 57Fe MÖSSBAUER SPECTROSCOPY OF FULGURITES.
  • Wisconsin
    • Juneau Co.
Am Jour. of Science, 4th ser. vol. 7 no. 43, (July 1899)
Western Sahara
 
  • Es Semara Province
    • Jdiriya
A. M. I. Martins collection
Mineral and/or Locality  
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