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MacAlpine Hills 88136 meteorite (MAC 88136), Transantarctic Mts, Eastern Antarctica, Antarctica

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Latitude & Longitude (WGS84): 84° 13' South , 160° 30' East
Latitude & Longitude (decimal): -84.21667,160.50000
GeoHash:G#: p940ukbd3
Locality type:Meteorite Fall Location
Meteorite Class:EL3 chondrite meteorite
Meteoritical Society Class:EL3
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:EF : Ice cap climate


Enstatite Chondrite, low iron (EL3)
Find, 1988; 74.4 g, slightly weathered


Among the small and large meteorites recovered from Antarctica there are a large number of ordinary chondrites as well as a smaller, but still impressive number of rare carbonaceous chondrites, unusual irons, and even Mars rocks… Sometimes, however, one comes upon something quite new and unexpected — even when, like MacAlpine Hills 88136, the stone is only as large as a somewhat squashed golf ball. MacAlpine Hills 88136 (or MAC 88136) is a type EL3 Enstatite chondrite filled with a small trove of unusual lithologies. The predominant mineral is enstatite, displayed in conspicuous chondrules, and the enstatite is accompanied by the usual complement of iron, troilite, and other rare, utterly reduced sulfides which characterize the Enstatite clan. (Microscopically) obvious alabandite (MnS) reveals that it is a member of the EL chemical group of Enstatite chondrites. Within the confines of this small rock are a number of minerals that are quite out of equilibrium with each other (silica and olivine, for example). Indeed, MAC 88136 was the first type EL3 chondrite to be discovered. Other EL3s have since been discovered, but MAC 88136 still seems a little unusual — perhaps because its is less weathered than many other EL3 finds.

Most EL Chondrites are type EL6 and have experienced significant metamorphism. Some of the components of MAC 88136 may have experienced significant shocks and other melting events before its components took on their current modes. But the present assemblage is quite diverse - a diverse medley that has remained largely unchanged for 4.5 billion years.

Regions containing this locality

Antarctic Meteorites

Group of Meteorite Fall Locations - 462 mineral species & varietal names listed

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Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 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:

Alabandite
Formula: MnS
Description: zoned
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Albite
Formula: Na(AlSi3O8)
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Clinoenstatite
Formula: MgSiO3
Reference: Lindstrom, M. M., ed. (1990). New Meteorites. Antarctic Meteorite Newsletter 13 (2): 9-24. (March 1990)
Daubréelite
Formula: Fe2+Cr3+2S4
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Diopside
Formula: CaMgSi2O6
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Djerfisherite
Formula: K6(Fe,Cu,Ni)25S26Cl
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991); Lin, Y. & El Goresy, A. (2002) A comparative study of opaque phases in Qingzhen (EH3) and MacAlpine Hills 88136 (EL3): Representatives of EH and EL parent bodies, Meteoritics & Planetary Science 37 (4): 577-599 (April 2002)
'EL3 chondrite meteorite'
Reference: Meteoritical Society Database
Enstatite
Formula: MgSiO3
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
'Fayalite-Forsterite Series'
Description: Variable olivine, although mostly forsteritic; Cr variablity tracks disequilibrium
Reference: Weisberg, M. K., Kimura, M., McCoy, T. J. & Lin, Y. (2005) Olivine and the Thermal History of the E Chondrite Parent Body (abstract): Lunar and Planetary Science Conference XXXVI: abs. no. 1420. (March 2005)
'Feldspar Group'
Description: As very small inclusions in metal
Reference: van Niekerk, D. & Keil, K. (2011) Metal/sulfide-silicate intergrowth textures in EL3 meteorites: Origin by impact melting on the EL parent body, Meteoritics & Planetary Science 46 (10): 1484-1497. (Oct 2011)
Forsterite
Formula: Mg2SiO4
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991); Weisberg, M. K., Kimura, M., McCoy, T. J. & Lin, Y. (2005) Olivine and the Thermal History of the E Chondrite Parent Body (abstract): Lunar and Planetary Science Conference XXXVI: abs. no. 1420. (March 2005)
'Glass'
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Iron
Formula: Fe
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Oldhamite
Formula: (Ca,Mg)S
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Perryite
Formula: (Ni,Fe)5(Si,P)2
Description: sparse
Reference: Lin, Y. & El Goresy, A. (2002) A comparative study of opaque phases in Qingzhen (EH3) and MacAlpine Hills 88136 (EL3): Representatives of EH and EL parent bodies, Meteoritics & Planetary Science 37 (4): 577-599 (April 2002)
'Pyroxene Group'
Description: While Enstatite is dominant, but some Fe-bearing Pyroxenes are found. Diopside also found in some microregions
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Schreibersite
Formula: (Fe,Ni)3P
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
'Silica'
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Sphalerite
Formula: ZnS
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Spinel
Formula: MgAl2O4
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Taenite
Formula: (Fe,Ni)
Reference: Lin, Y. & El Goresy, A. (2002) A comparative study of opaque phases in Qingzhen (EH3) and MacAlpine Hills 88136 (EL3): Representatives of EH and EL parent bodies, Meteoritics & Planetary Science 37 (4): 577-599 (April 2002)
Troilite
Formula: FeS
Description: major accessory
Reference: Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Iron'1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Perryite1.BB.10(Ni,Fe)5(Si,P)2
Schreibersite1.BD.05(Fe,Ni)3P
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
'Alabandite'2.CD.10MnS
'Daubréelite'2.DA.05Fe2+Cr3+2S4
'Djerfisherite'2.FC.05K6(Fe,Cu,Ni)25S26Cl
Oldhamite2.CD.10(Ca,Mg)S
Pentlandite2.BB.15(FexNiy)Σ9S8
Sphalerite2.CB.05aZnS
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Spinel4.BB.05MgAl2O4
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
'Anorthite'9.FA.35Ca(Al2Si2O8)
'Clinoenstatite'9.DA.10MgSiO3
'Diopside'9.DA.15CaMgSi2O6
'Enstatite'9.DA.05MgSiO3
'Forsterite'9.AC.05Mg2SiO4
Unclassified Minerals, Rocks, etc.
'EL3 chondrite meteorite'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'Glass'-
Pyroxene Group-
Silica-

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)
Perryite1.1.22.1(Ni,Fe)5(Si,P)2
Schreibersite1.1.21.2(Fe,Ni)3P
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Alabandite2.8.1.4MnS
Sphalerite2.8.2.1ZnS
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 3:4
Daubréelite2.10.1.11Fe2+Cr3+2S4
Chlor-sulfides
Djerfisherite2.15.2.1K6(Fe,Cu,Ni)25S26Cl
Group 7 - MULTIPLE OXIDES
AB2X4
Spinel7.2.1.1MgAl2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Clinoenstatite65.1.1.1MgSiO3
Diopside65.1.3a.1CaMgSi2O6
Enstatite65.1.2.1MgSiO3
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Anorthite-Ca(Al2Si2O8)
'EL3 chondrite meteorite'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'Glass'-
Iron-Fe
Oldhamite-(Ca,Mg)S
'Pyroxene Group'-
'Silica'-

List of minerals for each chemical element

OOxygen
O AlbiteNa(AlSi3O8)
O AnorthiteCa(Al2Si2O8)
O ClinoenstatiteMgSiO3
O DiopsideCaMgSi2O6
O EnstatiteMgSiO3
O ForsteriteMg2SiO4
O SpinelMgAl2O4
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg ClinoenstatiteMgSiO3
Mg DiopsideCaMgSi2O6
Mg EnstatiteMgSiO3
Mg ForsteriteMg2SiO4
Mg Oldhamite(Ca,Mg)S
Mg SpinelMgAl2O4
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AnorthiteCa(Al2Si2O8)
Al SpinelMgAl2O4
SiSilicon
Si AlbiteNa(AlSi3O8)
Si AnorthiteCa(Al2Si2O8)
Si ClinoenstatiteMgSiO3
Si DiopsideCaMgSi2O6
Si EnstatiteMgSiO3
Si ForsteriteMg2SiO4
Si Perryite(Ni,Fe)5(Si,P)2
PPhosphorus
P Perryite(Ni,Fe)5(Si,P)2
P Schreibersite(Fe,Ni)3P
SSulfur
S AlabanditeMnS
S DaubréeliteFe2+Cr23+S4
S DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
S Oldhamite(Ca,Mg)S
S Pentlandite(FexNiy)Σ9S8
S SphaleriteZnS
S TroiliteFeS
ClChlorine
Cl DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
KPotassium
K DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
CaCalcium
Ca AnorthiteCa(Al2Si2O8)
Ca DiopsideCaMgSi2O6
Ca Oldhamite(Ca,Mg)S
CrChromium
Cr DaubréeliteFe2+Cr23+S4
MnManganese
Mn AlabanditeMnS
FeIron
Fe DaubréeliteFe2+Cr23+S4
Fe DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Pentlandite(FexNiy)Σ9S8
Fe Perryite(Ni,Fe)5(Si,P)2
Fe Schreibersite(Fe,Ni)3P
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
NiNickel
Ni DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Pentlandite(FexNiy)Σ9S8
Ni Perryite(Ni,Fe)5(Si,P)2
Ni Schreibersite(Fe,Ni)3P
Ni Taenite(Fe,Ni)
CuCopper
Cu DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
ZnZinc
Zn SphaleriteZnS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Jurassic
145 - 201.3 Ma



ID: 3191717
Mesozoic volcanic rocks

Age: Jurassic (145 - 201.3 Ma)

Stratigraphic Name: Kirpatrick Basalt

Comments: Transantarctic Mountains

Lithology: Mafic volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Lindstrom, M. M., ed. (1990). New Meteorites. Antarctic Meteorite Newsletter 13 (2): 9-24. (March 1990)
Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Grossman, J. N., ed. (1994). The Meteoritical Bulletin, No. 76. Meteoritics, 29(1): 100-143. (Jan 1994)
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
Lin, Y. & El Goresy, A. (2002) A comparative study of opaque phases in Qingzhen (EH3) and MacAlpine Hills 88136 (EL3): Representatives of EH and EL parent bodies, Meteoritics & Planetary Science 37 (4): 577-599 ( April 2002)
Weisberg, M. K., Kimura, M., McCoy, T. J. & Lin, Y. (2005) Olivine and the Thermal History of the E Chondrite Parent Body (abstract): Lunar and Planetary Science Conference XXXVI: abs. no. 1420. (March 2005)
van Niekerk, D. & Keil, K. (2011) Metal/sulfide-silicate intergrowth textures in EL3 meteorites: Origin by impact melting on the EL parent body, Meteoritics & Planetary Science 46 (10): 1484-1497. (Oct 2011)

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