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Lechatelierite

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Formula:
SiO2
Hardness:
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

Questionable/Doubtful
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
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Physical Properties of Lechatelierite

Hardness (Mohs):

Chemical Properties of Lechatelierite

Formula:
SiO2
Essential elements:
All elements listed in formula:

Relationship of Lechatelierite to other Species

4.DA.05QuartzSiO2
4.DA.10OpalSiO2 · nH2O
4.DA.10TridymiteSiO2
4.DA.15CristobaliteSiO2
4.DA.20MogániteSiO2
4.DA.25Melanophlogite46SiO2 · 6(N2,CO2) · 2(CH4,N2)
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
7.8.7Silhydrite3SiO2 · H2O
7.8.8OpalSiO2 · nH2O
7.8.9MogániteSiO2

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

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.
[var: Fulgurite] Steve Sorrell collection
  • Western Australia
    • Kalgoorlie-Boulder Shire
[var: Fulgurite]
      • Pinjin Station
[var: Fulgurite]
Austria
 
  • Carinthia
    • Hohe Tauern
      • Glockner group
        • Hochtor area
[var: Fulgurite] Miner.Arch.Salzb., vol.14 (297)
  • Salzburg
    • Hohe Tauern
      • Fusch valley
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
  • Tyrol
    • North Tyrol
      • Ötz valley
        • Umhausen
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Belgium
 
[var: Fulgurite]
Canada
 
  • Saskatchewan
    • Beaverlodge region
Yale Peabody Museum
Egypt
 
  • Matruh Governorate
[var: Fulgurite] Rob Lavinsky
[var: Fulgurite]
http://www.lpi.usra.edu/meetings/lpsc2007/pdf/1346.pdf
    • Great Sand Sea
Rock Currier
Germany
 
  • Lower Saxony
    • Celle
      • Sprakensehl
[var: Fulgurite]
  • North Rhine-Westphalia
    • Eastern Westphalia
      • Gütersloh
[var: Fulgurite] Rocks & Min., Jan/Feb. 1980
[var: Fulgurite] Th. Thieme collection
  • Saxony
[var: Fulgurite]
India
 
  • Tamil Nadu
    • Periyar District
[var: Fulgurite] Current Science 75 (8): 763 (1998)
Japan
 
  • Hokkaido
[var: Fulgurite] http://cam.arts.usf.edu/McCollumPDF/16.VoltTrig.pdf.
Libya
 
  • Al Kufrah District
[var: Fulgurite]
Mauritania
collection jm.CLAUDE
Morocco
 
  • Guelmim-Es Semara Region
    • Es Semara Province
[var: Fulgurite] Ben Youssef Malek specimen
Namibia
 
  • Karas Region
    • Lüderitz District
Meteoritics & Planetary Science 43, Nr 7, 1201–1218 (2008)
Netherlands
 
  • Gelderland
    • Hattem
[var: Fulgurite] T.G. Nijland, J.C. Zwaan, D. Visser, J. Leloux - De mineralen van Nederland - 2007
    • Veluwe
[var: Fulgurite]
  • Overijssel
    • Vasse
[var: Fulgurite] 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
[var: Fulgurite] http://camb.demonhosting.co.uk/JConfAbs/6/PCM3.pdf.
UK
 
  • England
    • Cheshire
[var: Fulgurite]
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
[var: Fulgurite]
    • Pima Co.
azminerals.com
  • California
[var: Fulgurite] Ed Richardson collection
Jour. Geol., 54, no. 2, 117-122 (1946)
Jour. Geol., 54, no. 2, 117-122 (1946)
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.
[var: Fulgurite] Lunar and Planetary Science XXXIV (2003)
  • Florida
    • Clay Co.
[var: Fulgurite] 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
[var: Fulgurite] Matthew Pasek & Kristin Block (2009) Lightning-induced reduction of phosphorus oxidation state. Nature Geoscience 2:553-556
    • Polk Co.
[var: Fulgurite] 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
[var: Fulgurite] 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
[var: Fulgurite] 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.
[var: Fulgurite] Rocks & Min., Jan/Feb. 1980
    • Worcester Co.
      • Oxford
[var: Fulgurite] Patricia Berry Barker collection, no. 1610.
  • Michigan
    • Livingston Co.
Mineralogy of Michigan (2004) Heinrich & Robinson
  • Nebraska
[var: Fulgurite]
  • Nevada
    • Lyon Co.
      • Singatse Range
        • Yerington District
Yale Peabody Museum
    • Nye Co.
      • Toquima Range
Yale Peabody Museum
  • New Jersey
    • Middlesex Co.
[var: Fulgurite] AmMin 10:152-155
  • New Mexico
Mineral Museum Soccoro, New Mexico
  • New York
    • Oneida Co.
[var: Fulgurite]
  • North Carolina
    • Dare Co.
[var: Fulgurite] Rocks & Min: Nov, 1945.
  • Oregon
    • Deschutes Co.
[var: Fulgurite]
    • Douglas Co.
[var: Fulgurite] California Geology, Nov. 1986.
  • Pennsylvania
    • York Co.
[var: Fulgurite] 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.
[var: Fulgurite]
  • Texas
[var: Fulgurite] Mineralogical Research Co. specimens.
  • West Virginia
    • Hampshire Co.
[var: Fulgurite] Lunar and Planetary Science XXXVII (2006) LIGHTNING STRIKE GLASSES AS AN ANALOG FOR IMPACT GLASSES: 57Fe MÖSSBAUER SPECTROSCOPY OF FULGURITES.
  • Wisconsin
    • Juneau Co.
[var: Fulgurite] Am Jour. of Science, 4th ser. vol. 7 no. 43, (July 1899)
Western Sahara
 
  • Es Semara Province
    • Jdiriya
[var: Fulgurite] A. M. I. Martins collection
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