Adelie Land meteorite, George V Land, Eastern Antarctica, Antarcticai
Regional Level Types | |
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Adelie Land meteorite | Meteorite Fall Location |
George V Land | Territory |
Eastern Antarctica | Region |
Antarctica | Continent |
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Latitude & Longitude (WGS84):
67° 10' 59'' South , 142° 22' 59'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Ordinary chondrite (L5)
Find, 1912; 1 kg
A meteoritic stone was found on the snow ~30 km W. of Cape Denison during the Australasian Antarctic Expedition of 1911-1914. Inspections reveal chondrules and chondrule fragments within a largely equilibrated matrix. A few chondrules are unusually chromite-rich. Compositionally, equilibrated olivine (Fa24) and low Ca-orthopyroxene ('hypersthene') are characteristic of the L-chondrite chemical group. Mineralogically, the meteorite consists primarily of olivine accompanied by orthopyroxene along with minor plagioclase, troilite, and Fe-Ni metal. Accessory chromite, ilmenite, and isocubanite have also been reported.
A U-He age of ~3.49 Ga is reported, possibly indicative of a major collision involving an intermediate parent body (IPB) subsequent to the original formation of a putative L-chondrite parent body. With a terrestrial exposure age of ~70 ka, the meteorite had presumably been sequestered beneath the ice for most of that time before being brought to the surface where it would be readily noticed by a human being.
The main mass has been held at the South Australian Museum in Adelaide.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
7 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:
ⓘ Chromite Formula: Fe2+Cr3+2O4 Description: Chromite-rich chondrules present. Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Copper Formula: Cu Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ 'Fayalite-Forsterite Series' Description: Olivine composition (Fa24) characteristic of L chondrite chemical group [Mason,1963]. Reference: 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. |
ⓘ 'Glass' Description: Present in some chondrules. Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Ilmenite Formula: Fe2+TiO3 Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Iron Formula: Fe Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Iron var. Kamacite Formula: (Fe,Ni) Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Isocubanite Formula: CuFe2S3 Description: Textural considerations presumably suggested to Ramdohr that the isocubanite was primary (preterrestrial). However, confirmation from isotopic studies seems needed before confidence in this conclusion would be warranted. Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ 'Orthopyroxene Subgroup' Reference: Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson. |
ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Taenite Formula: (Fe,Ni) Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
ⓘ Troilite Formula: FeS Reference: Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites—I : Geochimica et Cosmochimica Acta 31(10): 1961-1967. (Oct 1967). |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Copper | 1.AA.05 | Cu |
ⓘ | Iron | 1.AE.05 | Fe |
ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Isocubanite | 2.CB.55b | CuFe2S3 |
ⓘ | Troilite | 2.CC.10 | FeS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Fayalite-Forsterite Series' | - | |
ⓘ | 'Glass' | - | |
ⓘ | 'Orthopyroxene Subgroup' | - | |
ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | ⓘ Chromite | Fe2+Cr23+O4 |
O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
O | ⓘ Ilmenite | Fe2+TiO3 |
Na | Sodium | |
Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Al | Aluminium | |
Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | Silicon | |
Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
S | Sulfur | |
S | ⓘ Troilite | FeS |
S | ⓘ Isocubanite | CuFe2S3 |
Ca | Calcium | |
Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Ti | Titanium | |
Ti | ⓘ Ilmenite | Fe2+TiO3 |
Cr | Chromium | |
Cr | ⓘ Chromite | Fe2+Cr23+O4 |
Fe | Iron | |
Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
Fe | ⓘ Troilite | FeS |
Fe | ⓘ Iron | Fe |
Fe | ⓘ Ilmenite | Fe2+TiO3 |
Fe | ⓘ Isocubanite | CuFe2S3 |
Fe | ⓘ Taenite | (Fe,Ni) |
Ni | Nickel | |
Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
Ni | ⓘ Taenite | (Fe,Ni) |
Cu | Copper | |
Cu | ⓘ Copper | Cu |
Cu | ⓘ Isocubanite | CuFe2S3 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta, 27(9), 1011-1023 (Sept 1963).
Ramdohr, P. (1967) Chromite and chromite chondrules in meteorites - I. Geochimica et Cosmochimica Acta, 31(10), 1961-1967 (Oct 1967).
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).
Grady, M.M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Other Databases
Wikipedia: | https://en.wikipedia.org/wiki/Adelie_Land_meteorite |
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Wikidata ID: | Q355052 |
External Links
http://www.lpi.usra.edu/meteor/metbull.php - MeteoriticalBulletinDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=378 - Adelie Land@MetBullDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=378 - Adelie Land@MetBullDatabase
Other Regions, Features and Areas containing this locality
Antarctic MeteoritesGroup of Meteorite Fall Locations
Antarctic PlateTectonic Plate
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