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| Allan Hills 85015 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills 85015 This is an OFFICIAL meteorite name. Abbreviation: ALH 85015 Observed fall: No Year found: 1985 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  3.2 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 449 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||
| Writeup |
Writeup from AMN 9(3):
Sample No.: ALH85015 Location: Allan Hills Weight (g): 3.2 Field No.: 2281 Dimensions (cm): 1 x 1 x 1 Meteorite Type: Diogenite
Macroscopic Description: Roberta Score Fifty percent of ALH85015 is covered with black fusion crust that is shiny in some areas and dull in other areas. Part of the area devoid of fusion crust is highly polished. A weathering rind extends 2 mm into the interior of the stone. The interior is medium gray in color with white and dark colored clasts.
Thin Section (,2) Description: Brian Mason The section consists almost entirely of orthopyroxene clasts, up to 3 mm across, in a groundmass of comminuted orthopyroxene, with accessory plagioclase and opaques, and traces of olivine. The pyroxene is fairly uniform in composition, Fs25, with CaO 0.8-1.5%, MnO 0.45-0.67%, Al2O3 0.32-0.66%, TiO2 0.05-0.17%. Plagioclase composition is An84-95. A grain of olivine, Fa39, was analysed. The meteorite is a diogenite. Writeup from AMN 33(1):
ALH
85015 this is a small sample so limited sections are
available. Only one shows eucritic material, so its classification as a
diogenite stands.
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| Data from: MB76 Table 2 Line 1244: |
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| References: | Published in Antarctic Meteorite Newsletter 33(1) (2010), JSC, Houston Published in Antarctic Meteorite Newsletter 9(3) (1986), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:
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Statistics: This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
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