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Hammadah al Hamra meteorite (HaH 280), Hamadah al Hamra, Al Jabal al Gharbi District, Libya

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Latitude & Longitude (WGS84): 28° 28' 13'' North , 12° 58' 18'' East
Latitude & Longitude (decimal): 28.47028,12.97194
Other regions containing this locality:Northwest Africa Meteorites
Sahara Desert, North Africa
Non-native locality type:Meteorite
Meteorite Type:CK4 chondrite
Köppen climate type:BWh : Hot deserts climate


Carbonaceous chondrite (CK4; S2; W2)
Find, 2000, 26.5 kg

Twenty pieces of a single stone were recovered. In a hand lens dark chondrules are visible in a fine-grained matrix rich in silicates. The olivine is largely equilibrated (Fa 32.3), but pyroxene is more variable in composition. Cr-rich magnetite is ubiquitous, often accompanied by ilmenite and spinel exsolution lamellae. Minor sulfides include pentlandite and rare chalcopyrite. Evidence of shock is pervasive — olivine displays undulose extinction and opaque veins are frequently present. Occasional plagioclase- and pyroxene-rich CAIs with layered hercynite are present.

Hammadah al Hamra is the second-most massive of the CK (Karoonda-like) carbonaceous chondrites. The CK chondrites are distinguished, among other things, by their abundant matrix (~75 vol%) and relatively high degree of oxidation. Unlike the great majority of carbonaceous chondrites, most CK chondrites have been metamorphosed to petrologic type 4 or higher.

Mineral List


6 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

Bukovanská, M., Brandstätter, F. & Kurat, G. (2003) NWA 1560 (CK4/5) and NWA 1563 (CK5) — A Comparison with HaH 280 (CK4) Chondrite. Meteoritics & Planetary Science 38, supplement: p. A84. (July 2003)

Grady, M. M., Pratesi, G. & Moggi Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

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