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Hammadah al Hamra 280 meteorite (HaH 280), Hamadah al Hamra, Jabal al Gharbi District, Libyai
| Regional Level Types | |
|---|---|
| Hammadah al Hamra 280 meteorite (HaH 280) | Meteorite Fall Location |
| Hamadah al Hamra | - not defined - |
| Jabal al Gharbi District | District |
| Libya | Country |
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Latitude & Longitude (WGS84):
28° 28' 13'' North , 12° 58' 18'' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Other/historical names associated with this locality:
HaH 280
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 280 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.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
6 valid minerals.
Meteorite/Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ 'Clinopyroxene Subgroup' Description: Variable composition (Fs8.5-10,2Wo47.2-48.9). |
| ⓘ 'Fayalite-Forsterite Series' |
| ⓘ Hercynite Formula: Fe2+Al2O4 |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Pentlandite Formula: (NixFey)Σ9S8 |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ Spinel Formula: MgAl2O4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pentlandite | 2.BB.15 | (NixFey)Σ9S8 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hercynite | 4.BB.05 | Fe2+Al2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Unclassified | |||
| ⓘ | 'Clinopyroxene Subgroup' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Hercynite | Fe2+Al2O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Fayalite-Forsterite Series | |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Spinel | MgAl2O4 |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Al | Aluminium | |
| Al | ⓘ Hercynite | Fe2+Al2O4 |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Fayalite-Forsterite Series | |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pentlandite | (NixFey)Σ9S8 |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Hercynite | Fe2+Al2O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pentlandite | (NixFey)Σ9S8 |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Ni | Nickel | |
| Ni | ⓘ Pentlandite | (NixFey)Σ9S8 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Regions, Features and Areas containing this locality
AfricaContinent
- Sahara DesertDesert
African PlateTectonic Plate
- Illizi-Ghadames basinBasin
- Sahara Metacraton
- Central Sahara ProvinceOrogenic Belt
Libya
- ⭔FezzanRegion
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References
www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?sea=&sfor=names&ants=no&falls=&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=mass&categ=CK+chondrites&mblist=All&rect=&phot=&snew=0&pnt=Normal%20table&code=11763
www.encyclopedia-of-meteorites.com (n.d.) http://www.encyclopedia-of-meteorites.com/test/HAH280MM_don_edwards.jpg
