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Grosvenor Mountains 85202 | |||||||||||||||||||||||||
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Basic information | Name: Grosvenor Mountains 85202 This is an OFFICIAL meteorite name. Abbreviation: GRO 85202 Observed fall: No Year found: 1985 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: ![]() | ||||||||||||||||||||||||
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 | ||||||||||||||||||||||||
Writeup![]() |
Writeup from AMN 9(3):
Sample No.: GRO85202 Location: Grosvenor Mountains Weight (g): 27.2 Field No.: 2053 Dimensions (cm): 4 x 3.5 x 3.5 Meteorite Type: C2 Chondrite
Macroscopic Description: René Martinez Thin fractured fusion crust covers two sides of this carbonaceous chondrite. Fusion crust appeared to be the only thing holding the sample together as it was highly fractured and disintegrated when the stone was chipped. The interior is fine-grained with no inclusions visible. Minute evaporite deposit lines some of the interior fractures.
Thin Section (,4) Description: Brian Mason The section shows a dark brown to black matrix with numerous mineral grains and aggregates and rare small chondrules. Most of the mineral grains and aggregates consist of an isotropic to weakly birefringent serpentine-like mineral. A few grains of olivine near Mg2SiO4 in composition were analysed; some grains of calcite were noted. The meteorite is a C2 chondrite. | ||||||||||||||||||||||||
Data from: MB76 Table 2 Line 2851: |
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References: | 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:![]() |
Statistics: This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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