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Hammadah al Hamra 093 meteorite (HaH 093), Wadi Al Shatii' District (Ash Shati District), Libyai
Regional Level Types
Hammadah al Hamra 093 meteorite (HaH 093)Meteorite Fall Location
Wadi Al Shatii' District (Ash Shati District)District
LibyaCountry

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Latitude & Longitude (WGS84):
28° 39' 52'' North , 13° 22' 51'' East
Latitude & Longitude (decimal):
Meteoritical Society Class:
Köppen climate type:


Unequilibrated ordinary chondrite, breccia (LL3.9; S3; W3)
Found, 1995; 197 g, single stone

A single somewhat weathered meteoritic stone was recovered by an anonymous finder during an expedition to the Libyan Sahara. Thin sections reveal a chondritic texture of clearly delineated chondrules, chondrule fragments, and sundry opaques set within a fine-grained matrix. Chondrules [~0.4 - 2 mm in diameter] are mainly olivine and/or pyroxene rich with porphyritic or radial textures [PO,POP, RP] and are accompanied by smaller cryptocrystalline chondrules. Compound chondrules are not uncommon and a macrochondrule [4.6 mm] has been featured in a recent article. Many chondrules are intergrown with the matrix and are frequently rimmed by opaques. Reflected light reveals interstitial — and sometimes apparently intrusive — aggregates of Fe-Ni metal and troilite with minor pentlandite between the chondrules. Nearly equilibrated olivine (Fa31) and pyroxene (Fs24.5) composition and textures suggest the LL3.9 classification. Undulose extinction of fractured olivine grains indicate moderate shock (level S3). Small veins of metal and silicates are also found. Rust-colored staining (limonite) of silicates and iron oxides within the matrix suggest easily noticed, but still moderate weathering (grade W3).

A cosmic ray exposure age of ~11 Ma and gas retention age of ~4.5 Ga are reported [Ne21; Ar40, respectively].

Regions containing this locality

African PlateTectonic Plate
Sahara Desert, North AfricaDesert

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Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Meteorite/Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Fayalite-Forsterite Series'
Habit: Olivine (Fa31.0±2.8),MetBull#80.
Reference: Grossman, J.N. (1994). The Meteoritical Bulletin, no. 80. Meteoritics & Planetary Science 31 (4,suppl.): A175-A180. (July 1996).; Weyrauch, M. & Bischoff, A. (2012) Macrochondrules in chondrites—Formation by melting of mega-sized dust aggregates and/or by rapid collisions at high temperatures? Meteoritics & Planetary Science 47 (12): 2237-2250. (Dec 2012).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
'Meteoritic Iron'
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
'Pyroxene Group'
Description: Ca-poor pyroxene,(Fs24.5±2.6).
Reference: Grossman, J.N. (1994). The Meteoritical Bulletin, no. 80. Meteoritics & Planetary Science 31 (4,suppl.): A175-A180. (July 1996).; Weyrauch, M. & Bischoff, A. (2012) Macrochondrules in chondrites—Formation by melting of mega-sized dust aggregates and/or by rapid collisions at high temperatures? Meteoritics & Planetary Science 47 (12): 2237-2250. (Dec 2012).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Troilite
Formula: FeS
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pentlandite2.BB.15(FexNiy)Σ9S8
Troilite2.CC.10FeS
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'Limonite'-(Fe,O,OH,H2O)
'Meteoritic Iron'-
'Pyroxene Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Unclassified Minerals, Mixtures, etc.
'Fayalite-Forsterite Series'-
'Limonite'-(Fe,O,OH,H2O)
'Meteoritic Iron'-
'Pyroxene Group'-

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
OOxygen
O Limonite(Fe,O,OH,H2O)
SSulfur
S Pentlandite(FexNiy)Σ9S8
S TroiliteFeS
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe Pentlandite(FexNiy)Σ9S8
Fe TroiliteFeS
NiNickel
Ni Pentlandite(FexNiy)Σ9S8

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Quaternary
0 - 2.588 Ma



ID: 3188831
Cenozoic sedimentary rocks

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Sandstone-siltstone

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Pleistocene - Paleogene
0.0117 - 66 Ma



ID: 3306504

Age: Cenozoic (0.0117 - 66 Ma)

Lithology: Sedimentary

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Grossman, J.N. (1994). The Meteoritical Bulletin, no. 80. Meteoritics & Planetary Science 31 (4,suppl.): A175-A180. (July 1996).
Scherer, P., Herrmann, S. & Schultz, L. (1998) Noble gases in twenty-one Saharan LL-chondrites: Exposure ages and possible pairings: Meteoritics & Planetary Science 33 (2): 259-265. (March 1998).
Weyrauch, M. & Bischoff, A. (2012) Macrochondrules in chondrites—Formation by melting of mega-sized dust aggregates and/or by rapid collisions at high temperatures? Meteoritics & Planetary Science 47 (12): 2237-2250. (Dec 2012).
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

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