Meteoritical Bulletin: Entry for Amundsen Glacier 17290

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Amundsen Glacier 17290

Basic information

Name: Amundsen Glacier 17290
This is an OFFICIAL meteorite name.
Abbreviation: AMU 17290
Observed fall: No
Year found: 2017
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 14.4 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	CM2
Antarctic Meteorite Newsletter:	AMN 41(2)	(2018)	CM2
Recommended:			CM2 [explanation]

This is 1 of 626 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 28 Sep 2018

Writeup

help

Writeup from AMN 41(2):

Sample Number

AMU 17290

Newsletter

41,2

Location

Amundsen Glacier

Field Number

24715

Dimensions

4.3 x 3.2 x 1.5

Weight

14.393

Original Classification

CM2 chondrite

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 1-33; Ferrosilite (mol%): 9

Be

B/C

Macroscopic Description - Cecilia Satterwhite

Some black patches of fusion crust are on the exterior surface. The rest of the exterior is dark gray to black with fractures, pits and evaporite. There is one large hollow pit on one surface and some mm sized inclusions are visible. The interior is a dark gray to black matrix with some oxidation and tiny specks of lighter/weathered colors.

Thin Section Description (,2) - Cari Corrigan, Tim McCoy

The section consists 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_0-33 with a peak at Fa_0-2. Orthopyroxene is Fs₉. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. The meteorite is a CM2 chondrite.

Antarctic Meteorite Images for Sample AMU 17290

Thin Section Photo of Sample AMU 17290 in Cross-Polarized Light with 5X Magnification

Thin Section Photo of Sample AMU 17290 in Reflected Light with 2.5X Magnification

Lab Photo of Sample AMU 17290 Displaying West Orientation

Lab Photo of Sample AMU 17290 Displaying South Orientation

Lab Photo of Sample AMU 17290 Displaying Bottom Orientation

Lab Photo of Sample AMU 17290 Displaying Top Orientation

Lab Photo of Sample AMU 17290 Displaying East Orientation

Lab Photo of Sample AMU 17290 Displaying Splits View

Lab Photo of Sample AMU 17290 Displaying North Orientation

Thin Section Photo of Sample AMU 17290 in Cross-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample AMU 17290 in Plane-Polarized Light with 2.5X Magnification

Data from:
  MB107
  Table 0
  Line 0:

Date:	2017
Mass (g):	14.393
Pieces:	1
Class:	CM2
Weathering grade:	Be
Fayalite (mol%):	1-33
Ferrosilite (mol%):	9
Magnetic suscept.:	3.13
Classifier:	SI
Type spec mass (g):	14.393
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	Submitted by AMN

Institutions
and collections

JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
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 41(2) (2018), JSC, Houston
Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

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

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names)

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