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O'Malley 014
Basic information Name: O'Malley 014
     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 9.4 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H6
Recommended:  H6    [explanation]

This is 1 of 6189 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Feb 2012
Writeuphelp
Writeup from MB 100:

O’Malley 014        30°53’06.6"S, 131°22’48.4"E

South Australia, Australia

Found: 9 Apr 2011

Classification: Ordinary chondrite (H6)

History: Two pieces found by E. Mare on the Nullarbor Plain.

Physical characteristics: Two small flatish pieces.

Petrography: (E. Mare, Monash) Few recognizable chondrules (to 2 mm) in a recrystallized and rusted matrix. Plagioclase to 100 μm. Chondrule types include CC, PP, PO, RP and POP. Fe-Ni metal grains (<1%) <100 μm. Troilite grains (5%) are larger (up to 300 microns, average 50-100 microns). Oxides have heavily replaced metal and troilite and make up ~20% of the meteorite. Olivine grains have weak undulose extinction.

Geochemistry: (E. Mare, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa19.6-20.1, mean=19.57 mol%, std=0.38, n=6; Low-Ca pyroxene Fs17.1-17.9, mean=17.59 mol%, std=0.28, n=9.

Classification: Ordinary chondrite (H6, S2, W3)

Data from:
  MB100
  Table 1
  Line 1723:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:9 Apr 2011
Latitude:30°53'06.6"S
Longitude:131°22'48.4"E
Mass (g):9.4
Pieces:2
Class:H6
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):19.57
Ferrosilite (mol%):17.59
Wollastonite (mol%):1.24
Classifier:E. R. Mare
Type spec mass (g):5.6
Type spec location:Monash
Main mass:Monash
Finder:E. Mare
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° 53' 7"S, 131° 22' 48"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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