Gibeon meteorite, Gibeon Constituency, Hardap Region, Namibiai
| Regional Level Types | |
|---|---|
| Gibeon meteorite | Meteorite Fall Location |
| Gibeon Constituency | Constituency |
| Hardap Region | Region |
| Namibia | Country |
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Latitude & Longitude (WGS84):
25° 30' South , 18° 0' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Deposit first discovered:
1836
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Tses | 2,000 (2013) | 42.6km |
Fine octahedrite, group IV A.
Gibeon is a meteorite that fell in prehistoric times in Namibia. It was named after the nearest town of Gibeon. GPS coordinates are copied from the Meteoritical Bulletin Database website.
History
The meteorite was discovered by the Nama people and used by them to make tools and weapons, including heads for their assegais.
In 1836 the English captain J. E. Alexander collected samples of the meteorite in the vicinity of the Fish River and sent them to London. There, John Herschel analysed them and confirmed for the first time the extraterrestrial nature of the material.
Between 1911 and 1913, 33 fragments of the meteorite were collected in the vicinity of Gibeon and brought to the capital Windhoek. They weighed between 195 kg (ca. 430 lbs) and 506 kilograms (ca. 1,116 lb) and were first stored, then displayed at the Zoo Park as a single heap. In 1975 a public fountain displaying the meteorite fragments was planned. The pieces were removed and stored at the Alte Feste, where two of the fragments were stolen. The fountain was eventually erected in Post Street Mall, with two empty pillars for the missing fragments. Since then, two more fragments were removed from the fountain, so that it displays only 29 pieces today.
The collection displayed on the fountain in Windhoek's Central Business District was proclaimed a National Monument on 15 February 1950. Additionally, it was decided that all meteorites found in Namibia would automatically be protected as National Monuments and should not be removed from where they have been found, nor damaged in any way.
Strewn field
The fragments of the meteorite in the strewn field were dispersed over an elliptical area 390 kilometres (ca. 242 mi) long and 120 kilometres (ca. 75 mi) wide, by far the largest known strewn field in the world. The core of this area is situated near the village of Gibeon in Namibia's Hardap Region. About 100–150 different fragments have been collected over time, and additional pieces are still found occasionally. From 1836 to 1930 some 54 fragments weighing 15 tons were found. The total recovered weight is about 25 tons.
Composition and classification
The term Gibeon encompasses the total extent of meteoritic material fallen from the sky during this fall. This material is classified as iron meteorite belonging to the chemical group IVA.
Gibeon meteorites are composed of an iron-nickel alloy containing significant amounts of cobalt and phosphorus. The crystal structure of this meteorite provides a classic example of fine octahedrite and the Widmanstätten pattern is appreciated for its beauty both by collectors and designers of jewelry.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
9 valid minerals.
Meteorite/Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Brezinaite Formula: Cr3S4 |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Daubréelite Formula: Fe2+Cr3+2S4 |
| ⓘ Eskolaite Formula: Cr2O3 |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ 'Plessite' |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Taenite Formula: (Ni,Fe) References: Frost, Michael J. (1967) Oriented lamellae in the Gibeon meteorite. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (280) 607-612 doi:10.1180/minmag.1967.036.280.14 |
| ⓘ Tridymite Formula: SiO2 References: |
| ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Taenite | 1.AE.10 | (Ni,Fe) |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Troilite | 2.CC.10 | FeS |
| ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
| ⓘ | Brezinaite | 2.DA.15 | Cr3S4 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Eskolaite | 4.CB.05 | Cr2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Tridymite | 4.DA.10 | SiO2 |
| Unclassified | |||
| ⓘ | 'Plessite' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Eskolaite | Cr2O3 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Tridymite | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Tridymite | SiO2 |
| S | Sulfur | |
| S | ⓘ Brezinaite | Cr3S4 |
| S | ⓘ Daubréelite | Fe2+Cr23+S4 |
| S | ⓘ Troilite | FeS |
| Cr | Chromium | |
| Cr | ⓘ Brezinaite | Cr3S4 |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Cr | ⓘ Eskolaite | Cr2O3 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Fe | ⓘ Native Iron | Fe |
| Fe | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Taenite | (Ni,Fe) |
| Fe | ⓘ Troilite | FeS |
| Ni | Nickel | |
| Ni | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Taenite | (Ni,Fe) |
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Gibeon_(meteorite) |
|---|---|
| Wikidata ID: | Q1522908 |
Other Regions, Features and Areas containing this locality
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References
Spencer, L. J. (1941) The Gibeon shower of meteoritic irons in South-West Africa (With Plates I and II) Mineralogical Magazine and Journal of the Mineralogical Society, 26 (173) 19-35 doi:10.1180/minmag.1941.026.173.01
Frost, Michael J. (1967) Oriented lamellae in the Gibeon meteorite. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (280) 607-612 doi:10.1180/minmag.1967.036.280.14
Aladag, Erdem, Gordon, Robert B. (1969) Structure of the parent taenite of the Gibeon meteorite. Geochimica et Cosmochimica Acta, 33 (6) 750-752 doi:10.1016/0016-7037(69)90122-7
Axon, H. J., Smith, P. L. (1970) A study of some iron meteorites of the Gibeon association. Mineralogical Magazine, 37 (292) 888-897 doi:10.1180/minmag.1970.037.292.03
Auten, Thomas A. (1973) ON THE BRITTLENESS OF GIBEON METEORITIC IRON. Meteoritics, 8 (3) 189-196 doi:10.1111/j.1945-5100.1973.tb01247.x
Marvin, Ursula B., Petaev, Michael I., Croft, William J., Killgore, Marvin (2001) Silica Minerals in the Gibeon IVA Iron Meteorite. Lunar and Planetary Science XXVIII 1374.
Hutchinson, Bevis, Hagström, Joacim (2006) Austenite decomposition structures in the gibeon meteorite. Metallurgical and Materials Transactions A, 37 (6). 1811-1818 doi:10.1007/s11661-006-0123-x







Gibeon meteorite, Gibeon Constituency, Hardap Region, Namibia