Meteoritical Bulletin: Entry for Miller Range 13269

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Miller Range 13269

Basic information

Name: Miller Range 13269
This is an OFFICIAL meteorite name.
Abbreviation: MIL 13269
Observed fall: No
Year found: 2013
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 1.2 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 40(1)	(2017)	CM2
Meteoritical Bulletin:	MB 106	(2018)	CM2
Recommended:			CM2 [explanation]

This is 1 of 544 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Comments:

Field number: 22295
Approved 25 Feb 2017

Writeup

help

Writeup from AMN 40(1):

Sample Number

MIL 13269

Newsletter

40,1

Location

Miller Range

Field Number

22295

Dimensions

0.9 x 1.2 x 0.8

Weight

1.22

Original Classification

CM2 Chondrite

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 1-47; Ferrosilite (mol%): 1-12

Ae

B/C

Macroscopic Description - Rachel Funk

Black fractured fusion crust covers 30% of the exterior surface. Some fractures penetrate the interior and minor evaporites are visible. The interior has a black matrix with white and gray inclusions/chondrules.

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

The section consists of a few small (up to 0.5 mm) chondrules, mineral grains and CAIs set in a black matrix. Rare metal and sulfide grains are present. Olivine compositions are Fa_1-47, orthopyroxene is Fs_1-12. 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 MIL 13269

Lab Photo of Sample MIL 13269 Displaying Splits View

Lab Photo of Sample MIL 13269

Thin Section Photo of Sample MIL 13269 in Plane-Polarized Light with 1.25X Magnification

Thin Section Photo of Sample MIL 13269 in Plane-Polarized Light with 1.25X Magnification

Thin Section Photo of Sample MIL 13269 in Reflected Light with 1.25X Magnification

Thin Section Photo of Sample MIL 13269 in Plane-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample MIL 13269 in Reflected Light with 2.5X Magnification

Thin Section Photo of Sample MIL 13269 in Cross-Polarized Light with 2.5X Magnification

Data from:
  MB106
  Table 0
  Line 0:

Date:	2013
Mass (g):	1.2
Pieces:	1
Class:	CM2
Weathering grade:	Ae
Fayalite (mol%):	1-47
Ferrosilite (mol%):	1-12
Classifier:	SI
Type spec mass (g):	1.2
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(1) (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.

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Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(83° 31' 34"S, 157° 0' 14"E)

Statistics:
This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)

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