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Adhi Kot meteorite, Sargodha District, Punjab, Pakistan

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Latitude & Longitude (WGS84): 32° 6' 0'' North , 71° 47' 59'' East
Latitude & Longitude (decimal): 32.10000,71.80000
Non-native locality type:Meteorite
Meteorite Class:EH4 chondrite meteorite
Meteoritical Society Class: EH4
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:BSh : Hot semi-arid (steppe) climate


Enstatite chondrite,low-Fe [EH4; S4]
Fall, 1 May 1919; 4.238 kg, a single stone


After detonations, a single stone fell at noon. The Enstatite Chondrite class is formally defined by bulk chemical abundances and oxygen isotope ratios. However, mineralogically the meteorites are characterized by their abundant Fe-poor silicates and their highly reduced mineral assemblages. The high-iron Enstatite Chondrites are further characterized by their small chondrules and the presence of niningerite and perryite. Petrologic type 4 EH chondrites have been metamorphosed with resulting homogenized olivine and recrystallize fine-grained matrix. The EH4 chondrules are abundant and lack glass.

In addition to the usual mix of chondrules, metal, sulfides, and various clastic, Adhi Kot's brecciated matrix also contains a component of unusual silica-rich clasts (5 vol%).

Mineral List


14 valid minerals.

Meteorite/Rock Types Recorded

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This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966)

Keil, K. & Snetsinger, K.G. (1966): Niningerite: a new meteoritic sulfide. Science 155, 451-453.

Leitch, C.A. & Smith, J.V. (1982): Petrography, mineral chemistry and origin of Type I enstatite chondrites. Geochimica et Cosmochimica Acta 46, 2083-2097.

Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968)

Rubin, A.E. & Keil, K. (1980): Mineralogy and petrology of the Abee enstatite chondrite. Meteoritics 15, 358-359.

Rubin, A. E. (1983) The Adhi Kot breccia and implications for the origin of chondrules and silica-rich clasts in enstatite chondrites, Earth and Planetary Science Letters 64 (2): 201–212. (August 1983)

Brearley, A. J. & Jones, R. H. (1998): Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA.

Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

Lavrentjeva, Z. A. (2001) Elemental Composition of Accessory Minerals from Adhi Kot EH4 Chondrite, Lunar and Planetary Science XXXII: Houston, Texas, abs. #1022. (March 2001)

Shimizu, M., Yoshida, H. & Mandarino, J.A. (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite. Canadian Mineralogist 40, 1687-1992.

External Links

http://www.lpi.usra.edu/meteor/metbull.php = Meteoritical Bulletin Database

Mineral and/or Locality  
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