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Elephant Moraine 83213 meteorite (EET 83213), Elephant Moraine, Victoria Land, Eastern Antarctica, Antarcticai
Regional Level Types
Elephant Moraine 83213 meteorite (EET 83213)Meteorite Fall Location
Elephant Moraine- not defined -
Victoria LandRegion
Eastern AntarcticaRegion
AntarcticaContinent

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Key
Latitude & Longitude (WGS84):
76° 16' 58'' South , 157° 13' 54'' East
Latitude & Longitude (decimal):
Meteoritical Society Class:
Köppen climate type:


Ordinary chondrite, unequilibrated (LL3.7)
Found, 1983; 2.727 kg

A 16 x 15 x 7 cm meteoritic stone covered by a dull fractured fusion crust with several evaporite deposits on the surface was recovered. The interior is mostly greenish-gray, but numerous white, cream-colored, and darker inclusions and chondrules are also present. Sharply defined chondrules are set within a brown, unequilibrated matrix. Variable olivine (F13—Fa20) and Ca-poor clinopyroxene (Fs3-Fs26) are characteristic of the LL3.7 intermediate geochemical group. Fe-Ni metal, often in plessitic intergrowths, and troilite accompany the dominant silicates. Accessory chromite and Cr-rich spinels are also reported. Localized limonite staining is indicative of mild to moderate weathering (Level Be). A more quantitative study using Mossbauer spectra reported that 4.7% of the iron was in the ferric (3+) state. C-14 data suggests that EET 83213 has resided in Antarctica for ~36 ka.

The LL chondrites (relatively very low in total iron) are the smallest of the three major ordinary chondrite groups. They represent nearly 10% of all fully classified meteorite falls and a slightly larger proportion of total meteorite recoveries. The LL3 (unequilibrated) subgroup is represented by a modest 15 witnessed falls [as of early 2017], but none of the falls have been classified precisely as LL3.7 chondrites. EET 83213 is the 4th most massive of the 27 recovered LL3.7 finds. The most massive recovered LL3.7 chondrite is Richfield [40.8 kg]. However, most of them are quite small (median mass ~200 g).

Regions containing this locality

Antarctic PlateTectonic Plate
Antarctic MeteoritesGroup of Meteorite Fall Locations

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:

'Chrome-Spinel (of Dana)'
Reference: Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).
Chromite
Formula: Fe2+Cr3+2O4
Reference: Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).
Clinoenstatite
Formula: MgSiO3
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
'Clinopyroxene Subgroup'
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
'Fayalite-Forsterite Series'
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).; Solberg, T. C. & Burns, R. G. (1989) Iron Mossbauer spectral study of weathered Antarctic and SNC meteorites. IN: Lunar and Planetary Science Conference XIX, Proceedings. pp. 313-322. Houston: Lunar and Planetary Institute. (March 1989).; Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).
'Glass'
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).; Solberg, T. C. & Burns, R. G. (1989) Iron Mossbauer spectral study of weathered Antarctic and SNC meteorites. IN: Lunar and Planetary Science Conference XIX, Proceedings. pp. 313-322. Houston: Lunar and Planetary Institute. (March 1989).
Iron
Formula: Fe
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).; Ebihara, M. & Kong, P. (1995) Metallic Fractions of Ordinary Chondrites: Implications to the Structure of Chondritic Parent Bodies: Meteoritics 30(5): p. 502.
'Limonite'
Formula: (Fe,O,OH,H2O)
Description: Not unsurprisingly, Mossbauer spectroscopy suggests that the limonite apparently contains a goethite signature.
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
'Plessite'
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
Spinel
Formula: MgAl2O4
Reference: Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).
Taenite
Formula: (Fe,Ni)
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
Tetrataenite
Formula: FeNi
Reference: Ebihara, M. & Kong, P. (1995) Metallic Fractions of Ordinary Chondrites: Implications to the Structure of Chondritic Parent Bodies: Meteoritics 30(5): p. 502.
Troilite
Formula: FeS
Reference: Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).

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)
Tetrataenite1.AE.10FeNi
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Spinel4.BB.05MgAl2O4
Group 9 - Silicates
Clinoenstatite9.DA.10MgSiO3
Unclassified Minerals, Rocks, etc.
'Chrome-Spinel (of Dana)'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Glass'-
'Limonite'-(Fe,O,OH,H2O)
'Plessite'-

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)
Tetrataenite1.1.11.3FeNi
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Spinel7.2.1.1MgAl2O4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Clinoenstatite65.1.1.1MgSiO3
Unclassified Minerals, Mixtures, etc.
'Chrome-Spinel (of Dana)'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Glass'-
Iron-Fe
'Limonite'-(Fe,O,OH,H2O)
'Plessite'-

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
OOxygen
O ClinoenstatiteMgSiO3
O Limonite(Fe,O,OH,H2O)
O ChromiteFe2+Cr23+O4
O SpinelMgAl2O4
MgMagnesium
Mg ClinoenstatiteMgSiO3
Mg SpinelMgAl2O4
AlAluminium
Al SpinelMgAl2O4
SiSilicon
Si ClinoenstatiteMgSiO3
SSulfur
S TroiliteFeS
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Limonite(Fe,O,OH,H2O)
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
Fe IronFe
Fe TetrataeniteFeNi
Fe ChromiteFe2+Cr23+O4
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)
Ni TetrataeniteFeNi

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Meteorite Working Group (1985) Antarctic Meteorite Newsletter 8(1). Johnson Space Center, Houston, (Feb 1985).
Solberg, T. C. & Burns, R. G. (1989) Iron Mossbauer spectral study of weathered Antarctic and SNC meteorites. IN: Lunar and Planetary Science Conference XIX, Proceedings. pp. 313-322. Houston: Lunar and Planetary Institute. (March 1989).
Jull, A.J.T., Englert, P.A.J., Donahue, D.J. & Linick, T.W. (1989) Trends in Carbon-14 Terrestrial Ages of Antarctic Meteorites from Different Sites. Lunar and Planetary Science Conference 20; p. 488. (1989)
Allton, J.H., Wentworth, S.J. & Gooding, J.L. (July 1993) Calorimetric Thermometry of Meteoritic Troilite: Early Reconnaissance: Meteoritics 28(3): p. 315. (July 1993).
Ebihara, M. & Kong, P. (1995) Metallic Fractions of Ordinary Chondrites: Implications to the Structure of Chondritic Parent Bodies: Meteoritics 30(5): p. 502.
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).

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