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| Thiel Mountains 91722 | |||||||||||||||||||||||||
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| Basic information | Name: Thiel Mountains 91722 This is an OFFICIAL meteorite name. Abbreviation: TIL 91722 Observed fall: No Year found: 1991 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  47.4 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 636 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 16(1):
Sample No.: TIL91722 Location: Thiel Mountains Dimensions (cm): 4.0 x 2.5 x 2.5 Weight (g): 47.4 Meteorite Type: C2 Chondrite
Macroscopic Description: Cecilia Satterwhite Fifty percent of the exterior of TIL91722 is covered with black, frothy, and fractured fusion crust. The interior is jet black and contains abundant gray inclusions. A few areas have weathered to a yellowish-brown. The abundant evaporite deposit present has a bluish color.
Thin Section (,2) Description: Brian Mason The section shows numerous chondrules, up to 1.1 mm across, mineral aggregates, and small mineral grains in a black carbonaceous matrix. The minerals are mainly olivine, with minor pyroxene. The composition of most olivine grains is near Mg2SiO4, but a few more iron-rich grains are present, up to Fs24. Pyroxene compositions range from Fs1 to Fs5. The meteorite is a C2 chondrite.
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| Data from: MB76 Table 2 Line 5501: |
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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 44547 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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| Revision history: |
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