Meteoritical Bulletin: Entry for Miller Range 07613

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Miller Range 07613

Basic information

Name: Miller Range 07613
This is an OFFICIAL meteorite name.
Abbreviation: MIL 07613
Observed fall: No
Year found: 2007
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 4.6 g

Classification
history:

Meteoritical Bulletin:	MB 96	(2009)	Diogenite
Recommended:			Diogenite [explanation]

This is 1 of 522 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Field number: 18795
Approved 4 Mar 2009

Writeup

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Writeup from AMN 32(1):

Sample Number	MIL 07613
Pairing
Newsletter	32,1
Location	Miller Range
Field Number	18795
Dimensions	2.0 x 2.0 x 1.0
Weight	4.560
Original Classification	Diogenite
Macroscopic Description - Kathleen McBride
The exterior has 40% brown/black fusion crust. The interior matrix is fine grained, tan in color and has black inclusions.
Thin Section (,3) Description - Tim McCoy and Linda Welzenbach
The section consists of an unbrecciated mass 2-5 mm orthopyroxene grains which interfinger at grain boundaries. Blebby diopside lamellae are common within the orthopyroxene. Large (several hundred microns) chromites are common at grain boundaries. Orthopyroxene has a composition of Fs₃₆Wo₂, diopside is Fs₁₄Wo₄₅ and plagioclase is An₉₂. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is likely a diogenite, although the texture is unlike typical diogenites and the pyroxene composition more FeO-rich than typical of diogenites.
Oxygen Isotopic Analysis - D. Rumble, Carnegie Institution of Washington
δ¹⁷O = 1.62, δ¹⁸O =3.57, Δ¹⁷O = -0.260 δ¹⁷O = 1.55, δ¹⁸O = 3.55, Δ¹⁷O = -0.316 [Where Δ¹⁷O = δ¹⁷O - 0.52 x δ¹⁸O]

Antarctic Meteorite Images for Sample MIL 07613

Data from:
  MB96
  Table 5
  Line 489:

Mass (g):	4.6
Class:	Diogenite
Weathering grade:	B

Plots:

O isotopes:

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References:

Published in Antarctic Meteorite Newsletter 32(1) (2009), JSC, Houston
Published in Meteoritical Bulletin, no. 96, MAPS 44, 1355-1397 (2009)

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Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(83° 22' 0"S, 156° 12' 29"E)

Statistics:
This is 1 of 44547 approved meteorites from Antarctica (plus 3802 unapproved names)

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