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Libyan Desert Glass

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Name:
For the locality.
An impact glass from a strewnfield in the Western Desert of Egypt. The impact origin is disputed, however, by some scientists. The impact site has not been located yet, although there is clear evidence an impact happened (e.g., Kleinmann et al., 2001). In 2013, Kramers et al. published analyses of a small black rock and proposed it to be the remnant of a cometary nucleus fragment that impacted after incorporating gases from the atmosphere.

The major component of Libyan Desert Glass is almost pure molten silica glass, Lechatelierite.

The glass was discovered by the international scientific community in 1932, but it had been used by the Ancient Egyptians as a gemstone.

Visit gemdat.org for gemological information about Libyan Desert Glass.


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Synonyms of Libyan Desert GlassHide

Other Language Names for Libyan Desert GlassHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Petrified Wood1 photo of Libyan Desert Glass associated with Petrified Wood on mindat.org.
Oakstone1 photo of Libyan Desert Glass associated with Oakstone on mindat.org.
Tektite1 photo of Libyan Desert Glass associated with Tektite on mindat.org.

Other InformationHide

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 Libyan Desert GlassHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
B. Kleinmann (1968): The breakdown of zircon observed in the Libyan desert glass as evidence of its impact origin. Earth and Planetary Science Letters 5, 497-501.
Virgil E. Barnes and James R. Underwood, Jr. (1976): New investigations of the strewn field of Libyan Desert Glass and its petrography. Earth and Planetary Science Letters, 30, 117-122.
R.F. Fudall (1981): The major element chemistry of Libyan Desert Glass and the mineralogy of its precursor. Meteoritics and Planetary Science, 16, 247-259.
Ulrich Jux (1983): Zusammensetzung und Ursprung von Wüstengläsern aus der Großen Sandsee Ägyptens. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, Band 134, 521-553.
Weeks, R. (1984): Libyan Desert glass: A review. Journal of Non-Crystalline Solids, 67, 593-619.
Seebaugh, W. R. & Strauss, A. M. (1984): Libyan Desert Glass: Remnants of an Impact Melt Sheet. LUNAR AND PLANETARY SCIENCE XV, 744-745. [Abstract.]
SILICA '96, Proceedings: Ed. Vincenzo de Michele, Centro Studi Luigi Negro, Pyramids, Segrate (Milano), 1997; with the following articles:
- Edmond Diemer: Libyan Desert Glass: an impactite. State of the art in July 1996. Pp. 95-109
- Robert Rocchia, Eric Robin, Francois Fröhlich, Jean Amossé, Jean-Alix Barrat, Henriette Méon, Laurence Froget and Edmond Diemer: The impact origin of Libyan Desert Glas. Pp. 143-149
- Jean-Pierre Adolphe, José Paradas and Francois Soleilhavoup:
Bacteria-like inclusions in Libyan Desert Silica Glass. Pp. 77-79
- Marc Feller: Vitreous silica from the Sahara. Pp. 111-114
- Christian Koeberl: Libyan Desert Glass: geochemical composition and origin. Pp. 121-131 [http://www.univie.ac.at/geochemistry/koeberl/publikation_list/132-Libyan-Desert-Glass-Proc-Bologna-Mtg-1997.pdf]
- Darryl S. Futrell and John A. O'Keefe: A brief discussion of the petrogenesis of Libyan Desert Glass. Pp. 115-120
- Carlo Patuelli: X-ray microdiffractometry analysis od Libyan Desert Silica Glass. Pp. 81-84
- Ahobila V. Murali, Michael E. Zolensky, James R. Underwood Jr and Robert Giegengack: Chondritic debris in Libyan Desert Glass. Pp. 133-142
- Robert Giegengack and James R. Underwood Jr: Origin of Libyan Desert Glass. Some stratigraphic considerations. Pp. 37-39
Barbara Kleinmann, Peter Horn and Falko Langenhorst (2001): Evidence for shock metamorphism in sandstones from the Libyan Desert Glass strewn field. Meteoritics & Planetary Science 36, 1277-1282.
Giovanni Pratesi, Cecilia Viti, Curzio Cipriani and Marcello Mellini (2002):
Silicate-silicate liquid immiscibility and graphite ribbons in Libyan desert glass. Geochimica et Cosmochimica Acta 66, 903-911.
Marcel Swaenen, Elzbieta Anna Stefaniak, Ray Frost, Anna Worobiec and Rene Van Grieken (2010): Investigation of inclusions trapped inside Libyan Desert Glass by Raman microscopy. Analytical and Bioanalytical Chemistry, 397, 2659-2665.
Kramers, J. D. et al. (2013): Unique chemistry of a diamond-bearing pebble from the Libyan Desert Glass strewnfield, SW Egypt: Evidence for a shocked comet fragment. Earth and Planetary Science Letters 382, 21–31.

Internet Links for Libyan Desert GlassHide

Localities for Libyan Desert GlassHide

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Egypt
 
  • Western Desert
    • Great Sand Sea
http://en.wikipedia.org/wiki/Libyan_desert_glass; http://de.wikipedia.org/wiki/W%C3%BCstenglas
Mineral and/or Locality  
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