header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 24 Jul 2021
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:  
O'Malley 006
Basic information Name: O'Malley 006
     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 2.3 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H5
Recommended:  H5    [explanation]

This is 1 of 10290 approved meteorites (plus 18 unapproved names) classified as H5.   [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 006        30°39’25.2"S, 131°28’41.3"E

South Australia, Australia

Found: 07 Apr 2011

Classification: Ordinary chondrite (H5)

History: Single piece found by E. Mare on the Nullarbor Plain.

Physical characteristics: Small flattish stone, dark reddish brown, some lichens.

Petrography: (E. Mare, Monash) Stone shows moderately well defined chondrules in a recrystallized, rusted matrix. Chondrule types include RP, POP, CC, PO, PP. Fe-Ni metal grains (<<1%) average ~5 μm. Troilite grains (3%) are up to 200 microns and show some oxidation. Metal and troilite are partly replaced by oxides which make up ~7% of the meteorite. Olivine grains show sharp extinction, however there are extensive melt networks where brecciated silicates are suspended in oxides after troilite and metal.

Geochemistry: (E. Mare, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa18.7-19.1, mean=18.84 mol%, std=0.19, n=4; Low-Ca pyroxene Fs16.5-17.0, mean=16.83 mol%, std=0.24, n=4.

Classification: Ordinary chondrite (H5, S3, W3)

Data from:
  MB100
  Table 1
  Line 1715:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:7 Apr 2011
Latitude:30°39'25.2"S
Longitude:131°28'41.3"E
Mass (g):2.3
Pieces:1
Class:H5
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):18.84
Ferrosilite (mol%):16.83
Wollastonite (mol%):1.22
Classifier:E. R. Mare
Type spec mass (g):1.5
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)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Australia
Coordinates:
     Recommended::   (30° 39' 25"S, 131° 28' 41"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)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page