header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Sep 2019
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Miller Range 090340
Basic information Name: Miller Range 090340
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 090340
Observed fall: No
Year found: 2009
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 4.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 34(1)  (2011)  Ureilite
AMN 35(2)  (2012)  Achondrite-ung
Meteoritical Bulletin:  MB 101  (2012)  Achondrite-ung
Recommended:  Achondrite-ung    [explanation]

This is 1 of 86 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Comments: Field number: 20519
Approved 14 Feb 2011
Revised 4 Sep 2012: Reclassified in AMN 35(2)
Writeuphelp
Writeup from AMN 34(1):
Sample Number MIL 090340
Newsletter 34,1
Location Miller Range
Field Number 20519
Dimensions 1.5 x 1.25 x 1.25
Weight 4.687
Original Classification Ureilite
Pairing MIL090340; MIL090356
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 27-30
Weathering
C
Fracturing
A/B
Macroscopic Description - Kathleen McBride
The exteriors have shiny dark brown fusion crust with some rusty patches and pits. The interiors are dark gray to black with crystalline textures, rust and high metal.
Thin Section (,2) Description - Cari Corrigan and Linda Welzenbach
These sections consist of an aggregate of equigranular (up to 1-2 mm) olivine grains. Individual olivine grains are rimmed by carbon-rich material containing grains of metal. Olivine has cores of Fa27-30. Pyroxene grains have compositions of Fs10-26 and Wo2-44. These meteorites are ureilites.
Antarctic Meteorite Images for Sample MIL 090340
Thin Section Photo of Sample MIL 090340 at 1.25X Magnification in Plane-Polarized Light  Thin Section Photo of Sample MIL 090340 at 2.5X Magnification in Plane-Polarized Light  Thin Section Photo of Sample MIL 090340 at 1.25X Magnification in Reflected Light  Thin Section Photo of Sample MIL 090340 at 2.5X Magnification in Reflected Light 
Thin Section Photo of Sample MIL 090340 at 1.25X Magnification in Cross-Polarized Light  Thin Section Photo of Sample MIL 090340 at 2.5X Magnification in Cross-Polarized Light  Lab Photo of Sample MIL 090340 Displaying North View 

Writeup from AMN 35(2):
Reclassification.

Four previously announced MIL samples that have been classified as "ureilite" (MIL 090340, 090356, 090206, 090805), are being reclassified here to "ungrouped achondrite". They are all very similar to two additional samples — MIL 090963 and MIL 090405 — and may instead represent 6 meteorites that are related to brachinites, based on Ca and Cr content of the olivines, O isotopes, and grain boundary mineralogy (e.g., Warren and Rubin, 2012, LPSC abstract #2528; Goodrich et al., 2012, MetSoc abstract #5272). Although these meteorites may be related to brachinites, they are not true brachinites and so the classification "ungrouped achondrite" will be used until a further change is necessary. We specifically want to call attention to the fact that they are not ureilites so that researchers will not mistakenly request them as such. Concomitantly, we feel that researchers who are interested in brachinites may find these samples of interest and may not have noticed them previously due to the ureilite classification.
Data from:
  MB99
  Table 0
  Line 0:
Date:2009
Mass (g):4.7
Pieces:1
Class:Ureilite
Weathering grade:C
Fayalite (mol%):27-30
Classifier:SI
Type spec mass (g):4.7
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 34(1) (2011), JSC, Houston
Published in Antarctic Meteorite Newsletter 35(2) (2012), JSC, Houston
Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:
     Recommended::   (83° 22' 4"S, 156° 28' 23"E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page