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MacAlpine Hills 87302 | |||||||||||||||||||||
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Basic information | Name: MacAlpine Hills 87302 This is an OFFICIAL meteorite name. Abbreviation: MAC 87302 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 1095 g | ||||||||||||||||||||
Classification history: |
This is 1 of 2060 approved meteorites (plus 5 unapproved names) classified as L4. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||
Comments: | Field number: 4384 | ||||||||||||||||||||
Writeup |
Writeup from AMN 11(2):
Sample No.: MAC87302; 87303 Location: MacAlpine Hills Weight (g): 1094.6; 254.2 Field No.: 4384; 4392 Dimensions (cm): 10x8x8; 7x6x4 Meteorite Type: L4 Chondrite
Macroscopic Description: René Martinez MAC87302 is rounded and 87303 is angular and these do not fit together, but macroscopically these two rocks are identical. Matrix is light-gray and inclusions are mostly light-colored. Some of the larger clasts are angular and appear to be clasts of ordinary chondrite material. The rest are clearly chondrules. There are small pockets of sulfide about 3-5 mm across as well as smaller grains disseminated throughout.
Thin Section (87302,13; 87303,10) Description: Brian Mason These sections are very similar in all respects and the meteorites are almost certainly paired. Chondrules and chondrule fragments are abundant, up to 2.4 mm across, but their margins tend to merge with the finely granular matrix, which consists of olivine and pyroxene with minor amounts of nickel-iron and troilite. Microprobe analyses give the following compositions: olivine, Fa24; pyroxene, Fs20. The meteorites are L4 chondrites. | ||||||||||||||||||||
Data from: MB76 Table 2 Line 4629: |
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Catalogs: |
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References: | Published in Antarctic Meteorite Newsletter 11(2) (1988), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography: |
Statistics: This is 1 of 44400 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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Revision history: |
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