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Hassi-Jekna meteorite, Adrar Province, Algeriai
Regional Level Types
Hassi-Jekna meteoriteMeteorite Fall Location
Adrar ProvinceProvince
AlgeriaCountry

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Key
Latitude & Longitude (WGS84):
28° 57' North , 0° 49' East
Latitude & Longitude (decimal):
Köppen climate type:


Iron meteorite, Octahedrite (IAB-sHL, Of)
Fall, 1890; 1.25 kg

After a violent noise, an irregularly shaped, darkened mass with a smooth hemisphere and a somewhat flattened backside covered with regmaglypts was found ~400 meters away from a nomadic camp in an 80 cm hole. The Fe-Ni rich octahedrite (~10% Ni) was later purchased by a French army officer. While, as expected, kamacite is dominant in the overall structure, taenite, plessite, and small martensitic zones occupy ~ 50% of sectioned surfaces. Minor amounts of schreibersite (in skeletal crystals) and haxonite are common, but troilite is not reported by all observers. Magnetite and wüstite are present in the fusion crust.

The 274 irons of the 'IAB complex' represented approximately 25% of all iron meteorite falls and has several defined subgroups. Hassi-Jekna is one of 3 witnessed falls within the 18 member IAB-sHL subgroup (high-Au, low-Ni) [late 2014]. The main mass is at the Muséum National d'Histoire Naturelle in Paris.

Regions containing this locality

African PlateTectonic Plate
Sahara Desert, North AfricaDesert
Northwest Africa MeteoritesMeteorite Fall Location

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 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:

Haxonite
Formula: (Fe,Ni)23C6
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Iron
Formula: Fe
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Iron var: Martensite
Formula: Fe
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
'Plessite'
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Schreibersite
Formula: (Fe,Ni)3P
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Taenite
Formula: (Fe,Ni)
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Troilite
Formula: FeS
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.
Wüstite
Formula: FeO
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites, vol 2: 632-634. University of California Press.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Haxonite1.BA.10(Fe,Ni)23C6
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
var: Martensite1.AE.05Fe
Schreibersite1.BD.05(Fe,Ni)3P
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Wüstite4.AB.25FeO
Unclassified Minerals, Rocks, etc.
'Plessite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Haxonite1.1.16.2(Fe,Ni)23C6
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Schreibersite1.1.21.2(Fe,Ni)3P
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 4 - SIMPLE OXIDES
AX
Wüstite4.2.1.6FeO
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Unclassified Minerals, Mixtures, etc.
Iron-Fe
var: Martensite-Fe
'Plessite'-

List of minerals for each chemical element

CCarbon
C Haxonite(Fe,Ni)23C6
OOxygen
O MagnetiteFe2+Fe23+O4
O WüstiteFeO
PPhosphorus
P Schreibersite(Fe,Ni)3P
SSulfur
S TroiliteFeS
FeIron
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Haxonite(Fe,Ni)23C6
Fe TroiliteFeS
Fe Taenite(Fe,Ni)
Fe Iron (var: Martensite)Fe
Fe Schreibersite(Fe,Ni)3P
Fe MagnetiteFe2+Fe23+O4
Fe WüstiteFeO
Fe IronFe
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Haxonite(Fe,Ni)23C6
Ni Taenite(Fe,Ni)
Ni Schreibersite(Fe,Ni)3P

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Buchwald, V.F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Grady, M.M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

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