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Tektite

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Gravel-sized glassy bodies of natural glass formed from terrestrial debris ejected during large impacts.

A natural glass formed from a meteorite impact melting the local rock. Depending on the nature of the latter, the composition of tektites is variable. Hence, many varietal names are given to tektites from different localities.

The meteoritic source was determined for three fields of scattered tektites (bediasite and georgiaite in North America, moldavite in Central Europe, and ivorite in West Africa). Though, for Australian and Asian tektites (indochinite, australite, zhamanshinite, irghizite, and others), the occurrence in meteoritic craters has only been inferred.

Visit gemdat.org for gemological information about Tektite.


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Classification of TektiteHide

Sub-divisions of TektiteHide

Mineralogy of TektiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
GlassAn amorphous, homogeneous material with a random liquid-like structure generally formed due to rapid cooling.

First Recorded Occurrence of TektiteHide

Other Language Names for TektiteHide

German:Tektit
Spanish:Tektita

Varieties of TektiteHide

AustraliteA tektite variety from the Australasian strewnfield.
Dark, mostly black.
BediasiteA black tektite variety from North American strewnfield (Chesapeake Bay impact crater), found in Texas, USA.
BikoliteA name given to tektites from the Bikol area of the Philippines.
BillitoniteA tektite material found on Billiton Island, between Sumatra and Borneo.
Compare indochinite.
ChiniteA black tektite variety from the Australasian strewnfield.
Found in China, hence the name.
Darwin GlassFrom Tasmania, Australia.
GeorgiaiteA green tektite variety from North American strewnfield (Chesapeake Bay impact crater), found in Georgia, USA.
IndochiniteA tektite variety from the Australasian strewnfield.
Dark, mostly black.
IrghiziteTektite (only?) from the Zhamanshin meteor crater in Kazakhstan (latitude: 48° 24' North, longitude: 60° 58' East).
IvoriteA black tektite variety from the Ivory Coast strewnfield (Lake Bosumtwi Crater, Ghana).
Found in the Côte d'Ivoire (Ivory Coast).
ZhamanshiniteTektites from the Zhamanshin meteor crater.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Libyan Desert Glass1 photo of Tektite associated with Libyan Desert Glass on mindat.org.
Petrified Wood1 photo of Tektite associated with Petrified Wood on mindat.org.
Oakstone1 photo of Tektite associated with Oakstone on mindat.org.
Cristobalite1 photo of Tektite associated with Cristobalite on mindat.org.

References for TektiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
J. Jedwab (1977) Minerals Deposited in Tektite and Impactite Bubbles. Meteoritics, 12, 264-266.
Bentor, Y. K. (1986) A new approach to the problem of tektite genesis. Earth and Planetary Science Letters, 77, 1-13.
Köberl C. (1990) The geochemistry of tektites: An overview. Tectonophysics 171, 405–422.
O'Keefe, J.A. (1993) The origin of tektites. Meteoritics, 29, 73–78.
Rossano, S., Balan, E., Morin, G., Bauer, J.-P., Calas, G., and Brouder, C. (1999) 57Fe Mössbauer spectroscopy of tektites. Phys. Chem. Minerals: 26: 530-538.
Povenmire, H. (2003) Tektites, A Cosmic Enigma. Florida Fireball Network, 210 pp.
http://www.meteorite-times.com/Back_Links/2003/January/Jims_Fragments.htm [Flame test to distinguish between tektite and obsidian]

Internet Links for TektiteHide

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