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| Patuxent Range 91546 | |||||||||||||||||||||||||
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| Basic information | Name: Patuxent Range 91546 This is an OFFICIAL meteorite name. Abbreviation: PAT 91546 Observed fall: No Year found: 1991 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  17.9 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 28 approved meteorites classified as CH3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CH chondrites, CH-CB family, and Metal-rich meteorites | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 16(1):
Sample No.: PAT91546 Location: Patuxent Range Dimensions (cm): 2.0 x 2.0 x 1.6 Weight (g): 17.9 Meteorite Type: Ungrouped Chondrite
Macroscopic Description: Robbie Marlow Dull dark brown fusion crust covers most of the exterior of PAT91546. The specimen is extremely coherent. The interior is dark brown and contains several chondrules that are <1 mm in size. Several light and dark inclusions were also noted.
Thin Section (,2) Description: Brian Mason The section shows a few chondrules (up to 0.3 mm across), abundant pyroxene and minor olivine grains, and a considerable amount of nickel-iron (about 25%). The silicate grains are small, averaging 0.03 mm. The meteorite is considerably weathered, with limonitic staining through out the section. Pyroxene composition ranges from Fs1 to Fs5, with a mean of Fs2; olivine composition ranges from Fa1 to Fa2. The metal contains no Si. The meteorite is classified as an ungrouped chondrite; it is essentially identical with ALH85085, a unique meteorite which has been intensively investigated (Earth Planet. Sci. Letters, v. 91, p. 1-54,1988).
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| Data from: MB76 Table 2 Line 4827: |
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| References: | Published in Antarctic Meteorite Newsletter 16(1) (1993), 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 43700 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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