Meteoritical Bulletin: Entry for Elephant Moraine 16171

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Elephant Moraine 16171

Basic information

Name: Elephant Moraine 16171
This is an OFFICIAL meteorite name.
Abbreviation: EET 16171
Observed fall: No
Year found: 2016
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 0.7 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 40(2)	(2017)	CM2
Meteoritical Bulletin:	MB 106	(2018)	CM2
Recommended:			CM2 [explanation]

This is 1 of 546 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Comments:

Approved 12 Sep 2017

Writeup

help

Writeup from AMN 40(2):

Sample Number

EET 16171

Newsletter

40,2

Location

Elephant Moraine

Field Number

24601

Dimensions

1.4 x 1.2 x 0.3

Weight

0.65

Original Classification

CM2 Chondrite

Pairing

EET 16050; EET 16079; EET 16097; EET 16127; EET 16128; EET 16171

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 1-36

Be

A/B

Macroscopic Description - Cecilia Satterwhite

60% of the exterior has black fusion crust, exposed areas are black/gray with some oxidation and evaporites. The interior is fine grained black matrix with light and weathered inclusions visible and evaporites.

Thin Section Description (,,2) - Tim McCoy

The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_0-48 with most <fa_{2, pyroxenes are Fs_1-38. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. The meteorites are CM2 chondrites.</fa}

Antarctic Meteorite Images for Sample EET 16171

Lab Photo of Sample EET 16171

Thin Section Photo of Sample EET 16171 in Plane-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample EET 16171 in Reflected Light with 2.5X Magnification

Thin Section Photo of Sample EET 16171 in Cross-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample EET 16171 in Plane-Polarized Light with 5X Magnification

Thin Section Photo of Sample EET 16171 in Reflected Light with 5X Magnification

Thin Section Photo of Sample EET 16171 in Cross-Polarized Light with 5X Magnification

Data from:
  MB106
  Table 0
  Line 0:

Date:	2016
Mass (g):	0.7
Pieces:	1
Class:	CM2
Weathering grade:	Be
Fayalite (mol%):	1-36
Classifier:	SI
Type spec mass (g):	0.7
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	Submitted by AMN

Institutions
and collections

JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 40(2) (2017), JSC, Houston
Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 40744 approved meteorites from Antarctica (plus 4494 unapproved names)

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