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O'Malley 008
Basic information Name: O'Malley 008
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2011
Country: Australia
Mass:help 3.4 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  L6
Recommended:  L6    [explanation]

This is 1 of 11509 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Feb 2012
Writeuphelp
Writeup from MB 100:

O’Malley 008        30°45’29.0"S, 131°26’52.9"E

South Australia, Australia

Found: 8 Apr 2011

Classification: Ordinary chondrite (L6)

History: Single piece found by A. Tomkins on the Nullarbor plain.

Physical characteristics: Small flat dark-brown stone lacking fusion crust and partially covered with lichens.

Petrography: (A. Tait, Monash) Transparent recrystallized matrix. Chondrule edges are not readily distinguished. Chondrule populations include; RP, PO, POP, BO, PP (the majority are porphyritic). Plagioclase grains are ~50 μm. Metal grains and sulfides have been completely oxidized. Olivine grains show undulose extinction, and no shock lamellae.

Geochemistry: (A. Tait, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa25.3-25.8, mean=25.48 mol%, std=0.21, n=4; Low-Ca pyroxene Fs21.4-21.9, mean=21.73 mol%, std=0.21, n=3.

Classification: Ordinary Chondrite (L6, S2, W4).

Data from:
  MB100
  Table 1
  Line 1717:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:8 Apr 2011
Latitude:30°45'29.0"S
Longitude:131°26'52.9"E
Mass (g):3.4
Pieces:1
Class:L6
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):25.48
Ferrosilite (mol%):21.73
Wollastonite (mol%):1.53
Classifier:A.W. Tait
Type spec mass (g):2
Type spec location:Monash
Main mass:Monash
Finder:A.Tomkins
Comments:Submitted by A. Tomkins, E. Mare, A. Tait, A. Langendam
Institutions
   and collections
Monash: Building 28 School of Geosciences Monash University Victoria 3800 Australia, Australia (institutional address; updated 12 Dec 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:

Australia
Coordinates:
     Recommended::   (30° 45' 29"S, 131° 26' 53"E)

Statistics:
     This is 1 of 239 approved meteorites from South Australia, Australia (plus 2 unapproved names) (plus 4 impact craters)
     This is 1 of 715 approved meteorites from Australia (plus 45 unapproved names) (plus 27 impact craters)
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