Meteoritical Bulletin: Entry for Miller Range 15322

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Miller Range 15322

Basic information

Name: Miller Range 15322
This is an OFFICIAL meteorite name.
Abbreviation: MIL 15322
Observed fall: No
Year found: 2015
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 29.3 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 42(1)	(2019)	EH3
Meteoritical Bulletin:	MB 108	(2020)	EH3
Recommended:			EH3 [explanation]

This is 1 of 142 approved meteorites classified as EH3. [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites

Comments:

Approved 21 Feb 2019

Writeup

help

Writeup from AMN 42(1):

Sample Number

MIL 15322

Newsletter

42,1

Location

Miller Range

Field Number

23058

Dimensions

3.9 x 3.0 x 2.0

Weight

29.270

Original Classification

EH3 Chondrite

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 0-1;Ferrosilite (mol%): 0-2

B/C

A/B

Macroscopic Description - Cecilia Satterwhite

70% black fusion crust covers the exterior, some surfaces are fractured and frothy. The rest of the exterior is rusty brown. The interior is a dark gray to black matrix with metal, some oxidation which is heavy in areas.

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

The section shows an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Chondrules contain moderate to small abundances of olivine. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show the olivine is Fa_0-1 and pyroxene is Fs_0-2. The meteorite is a type 3 enstatite chondrite, probably an EH3.

Antarctic Meteorite Images for Sample MIL 15322

Thin Section Photo of Sample MIL 15322 in Cross-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample MIL 15322 in Plane-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample MIL 15322 in Cross-Polarized Light with 5X Magnification

Lab Group Photo of Sample MIL 15322 Displaying North Orientation

Thin Section Photo of Sample MIL 15322 in Reflected Light with 2.5X Magnification

Thin Section Photo of Sample MIL 15322 in Plane-Polarized Light with 5X Magnification

Thin Section Photo of Sample MIL 15322 in Reflected Light with 5X Magnification

Data from:
  MB108
  Table 0
  Line 0:

Date:	2015
Latitude:	-83.3108
Longitude:	155.980
Mass (g):	29.274
Pieces:	1
Class:	EH3
Weathering grade:	B/C
Fayalite (mol%):	0-1
Ferrosilite (mol%):	0-2
Magnetic suscept.:	4.66
Classifier:	SI
Type spec mass (g):	29.274
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	Field no: 23058; 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 42(1) (2019), JSC, Houston
Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(83° 18' 39"S, 155° 58' 48"E)

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

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