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| MacAlpine Hills 88176 | |||||||||||||||||||||||||
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| Basic information | Name: MacAlpine Hills 88176 This is an OFFICIAL meteorite name. Abbreviation: MAC 88176 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  37.9 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 544 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||
| Comments: | Field number: 5555 | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 13(2):
Sample No. MAC88176 Location: MacAlpine Hills Dimensions (cm): 4.5x3x2.5 Field Number: 5555 Weight (g): 37.9 Meteorite Type: C2 chondrite
Macroscopic Description: Robbie Marlow Black, polygonally fractured fusion crust covers 75% of this oblong carbonaceous chondrite. The fusion crust is frothy on one surface. Evaporite deposit was exposed when this friable specimen was dissected. Oxidation is light and sub-millimeter sized white inclusions are evenly distributed throughout this meteorite.
Thin Section (,3) Description: Brian Mason The section shows a few small chondrules and numerous mineral grains in a black matrix. Chondrules and mineral grains consist largely of olivine, with a minor amount of pyroxene. Microprobe analyses show that most of the olivine has a composition close to Mg2SiO4, with a few more iron-rich grains; pyroxene is clinoenstatite, composition range Fs1-8. The meteorite is a C2 carbonaceous chondrite.
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| Data from: MB76 Table 2 Line 4724: |
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| References: | Published in Antarctic Meteorite Newsletter 13(2) (1990), 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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