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Thiel Mountains 91714
Basic information Name: Thiel Mountains 91714
     This is an OFFICIAL meteorite name.
Abbreviation: TIL 91714
Observed fall: No
Year found: 1991
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 163.9 g
Antarctic Meteorite Newsletter:  AMN 16(1)  (1993)  E5
Meteoritical Bulletin:  MB 76  (1994)  E5
NHM Catalogue:  5th Edition  (2000)  EL5
MetBase:  v. 7.1  (2006)  EL5
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  EL5
Recommended:  EL5    [explanation]

This is 1 of 10 approved meteorites classified as EL5.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Writeup from AMN 16(1):

Sample No.: TIL91714

Location: Thiel Mountains

Dimensions (cm): 6.5 x 4.8 x 4.9

Weight (g): 163.9

Meteorite Type: E5 chondrite


Macroscopic Description: Cecilia Satterwhite Despite the fact that this meteorite is heavily weathered, some brown fusion crust exists and metal is still obvious in the red-brawn to orange matrix.


Thin Section (,2) Description: Brian Mason

The section shows a few poorly defined chondrules in a matrix of granular orthopyroxene, with minor nickel-iron and sulfides. Fusion crust is present along one edge. Weathering is extensive, with brown limonitic staining throughout the section. The pyroxene is almost pure MgSiO3 (FeO 0.1-0.7%, CaO 0.7-0.8%). The nickel-iron contains 0.6-0.8% Si. The meteorite is classified as an E5 chondrite.


Data from:
  Table 2
  Line 5494:
Origin or pseudonym:Moulton Escarpment
Mass (g):163.9
Weathering grade:C
Ferrosilite (mol%):0.4
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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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     Catalogue of Meteorites:   (85° 15'S, 91° 0'W)
     Recommended::   (85° 9' 23"S, 94° 34' 14"W)
Note: the NHM and MetBase coordinates are 34.9 km apart

     This is 1 of 44549 approved meteorites from Antarctica (plus 3803 unapproved names)
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