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Leeuwfontein meteorite, Nkangala District, Mpumalanga, South Africai
Regional Level Types
Leeuwfontein meteoriteMeteorite Fall Location
Nkangala DistrictDistrict
MpumalangaProvince
South AfricaCountry

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Key
Latitude & Longitude (WGS84):
25° 40' South , 28° 22' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Nearest Settlements:
PlacePopulationDistance
Cullinan25,490 (2012)15.7km
Pretoria1,619,438 (2016)19.9km
Centurion233,386 (2012)28.0km
Mabopane97,417 (2012)32.6km
Midstream25,000 (2016)32.6km


Ordinary chondrite (L6)
Fell, 21 June 1912, 14 hrs; 460 g

After detonations a single stone was seen to fall. Scattered and usually indistinct chondrules up to 3 mm in diameter are found within a pale grey matrix. Fe-Ni grains up to 4 mm in diameter and a few barred olivine (BO) chondrules are also present upon closer inspection. Compositionally, olivine (Fa24) and low Ca-orthopyroxene ('hypersthene') are characteristic of the L-chondrite geochemical group. Mineralogically the meteorite consists primarily of dominant olivine and pyroxene along with minor troilite and Fe-Ni metal. Accessory chromite and ilmenite have also been reported. Preterrestrial shock has converted some plagioclase into maskelynite.

Argon (K-Ar) and helium (Pb,Th-He) ages of 638 Ma and 650 Ma, respectively, suggest a major collision involving the intermediate parent body (IPB) of the Leeuwfontein meteoroid during the past eon. A cosmic ray exposure (CRE) age of t= ~19 Ma reflects the immediate environment of the subsequent smaller impacting meteoroid before earth-encounter.

The L-group of ordinary chondrites (relatively low in total iron) are the largest group of classified witnessed meteorite falls and account for ~45% of all well-classified meteorite falls. The L6 petrologic type accounts for ~ 70% of the L-group. A total of 272 meteorite falls have now been classified exactly as 'L6' chondrites [June 2017].

The main mass has been kept at the Geological Survey Museum in Pretoria.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Transvaal, South AfricaProvince (Former)

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 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:

Chromite
Formula: Fe2+Cr3+2O4
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Fayalite-Forsterite Series'
Description: Olivine composition (Fa24) characteristic of L-group ordinary chondrites.
Reference: Prior, G.T. (1923) The Meteoric Iron of Karee Kloof, and the Meteoric Stones of Leeuwfontein and Sinai Peninsula: Mineralogical Magazine 20 (103): 134-139. (Dec 1923).; Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 1963).; Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Ilmenite
Formula: Fe2+TiO3
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron
Formula: Fe
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Maskelynite'
Reference: Prior, G.T. (1923) The Meteoric Iron of Karee Kloof, and the Meteoric Stones of Leeuwfontein and Sinai Peninsula: Mineralogical Magazine 20 (103): 134-139. (Dec 1923).
'Orthopyroxene Subgroup'
Description: Abundant Ca-poor orthopyroxene ('hypersthene') a defining characteristic of well-equilibrated ordinary chondrites.
Reference: Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Troilite
Formula: FeS
Reference: Prior, G.T. (1923) The Meteoric Iron of Karee Kloof, and the Meteoric Stones of Leeuwfontein and Sinai Peninsula: Mineralogical Magazine 20 (103): 134-139. (Dec 1923).; Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Ilmenite4.CB.05Fe2+TiO3
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'Maskelynite'-
'Orthopyroxene Subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Unclassified Minerals, Mixtures, etc.
'Fayalite-Forsterite Series'-
Iron-Fe
'Maskelynite'-
'Orthopyroxene Subgroup'-

List of minerals for each chemical element

OOxygen
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
SSulfur
S TroiliteFeS
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe TroiliteFeS
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Taenite(Fe,Ni)
Fe IronFe
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Prior, G.T. (1923) The Meteoric Iron of Karee Kloof, and the Meteoric Stones of Leeuwfontein and Sinai Peninsula: Mineralogical Magazine 20 (103): 134-139. (Dec 1923).
Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 1963).
Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Wasson, J. & Wang, S. (1991) The histories of ordinary chondrite parent bodies: U,Th-He age distributions. Meteoritics 26(2): 161-167. (June 1991).
Alexeev, V.A. (1998) Parent bodies of H and L chondrites: Times of catastrophic events. Meteoritics & Planetary Science 33(1): 145-152. (Jan 1998).
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.

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