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Thiel Mountains 99002
Basic information Name: Thiel Mountains 99002
     This is an OFFICIAL meteorite name.
Abbreviation: TIL 99002
Observed fall: No
Year found: 2000
Country: Antarctica [Collected by Planetary Studies Foundation (US)]
Mass:help 44.3 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Acapulcoite
Meteoritical Bulletin:  MB 86  (2002)  Acapulcoite
MetBase:  v. 7.1  (2006)  Acapulcoite
Recommended:  Acapulcoite    [explanation]

This is 1 of 76 approved meteorites classified as Acapulcoite.   [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites
Writeuphelp
Writeup from MB 86:

Thiel Mountains 99002

Antarctica

Found 2000 January 12

Primitive achondrite (acapulcoite)

A fresh 44.3 g black stone completely covered by fusion crust was recovered on blue ice at the Moulton Escarpment by Owen K. Garriott during a systematic search for meteorites conducted by PSF. Classification and mineralogy (P. Sipiera, Harper; G. Jerman, MSFC; A. Patzer, UAz): has a cumulate texture; metal is interstitial to coarse silicates; olivine, Fa9.2 (range Fa4.8–10.6); augite (Fs4Wo41–46); low Ca-pyroxene (Fs9–11En89–91); plagioclase (An15–18Ab78–82), Fe-Ni metal, troilite, chromite, and apatite; with abundant 120° triple point junctions. shock stage, S1; weathering grade, W1. The meteorite is mineralogically similar to Graves Nunataks (GRA) 98028 but larger grain size (300–400 µm) than GRA 98028 (50–100 µm). Specimens: all at PSF.

Data from:
  MB86
  Table 8
  Line 2:
Latitude:85°09.630'S
Longitude:94°34.207'W
Mass (g):44.3
Pieces:1
Class:Acapulcoite
Weathering grade:A
Fayalite (mol%):9.23
Ferrosilite (mol%):9.36
Classifier:P. Sipiera (Harper), G. Jerman (MSFC) and A. Patzer (UAz)
Type spec location:PSF
Main mass:PSF
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
Harper: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
MSFC: NASA/George C. Marshall Space Flight Center, Huntsville, AL 35812, United States (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (85° 10'S, 94° 34'W)
     Recommended::   (85° 9' 38"S, 94° 34' 12"W)
Note: the NHM and MetBase coordinates are 0.7 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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