header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Sep 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 007
Basic information Name: O'Malley 007
     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 24.3 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H5
Recommended:  H5    [explanation]

This is 1 of 10318 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 007        30°41’25.7"S, 131°28’24.7"E

South Australia, Australia

Found: 7 Apr 2011

Classification: Ordinary chondrite (H5)

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

Physical characteristics: Dark red stone with 60% rounded remnant fusion crust and a broken face.

Petrography: (E. Mare, Monash) Many chondrules (to 1 mm) but few are well defined. The matrix is recrystallized and rusted. Chondrule types include RP, CC, PO, PP, BO. Fe-Ni metal grains (3%) are up to 300 μm. Troilite grains (5%) are up to 200 μm and sometimes form rims around chondrules. Both metal and troilite are partly (but not significantly) replaced by oxides, which comprise 5-10% of this meteorite. Olivine grains show undulose extinction.

Geochemistry: (E. Mare, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa18.9-19.2, mean=19.00 mol%, std=0.13, n=4; Low-Ca pyroxene Fs16.7-17.3, mean=17.01 mol%, std=0.28, n=4.

Classification: Ordinary chondrite (H5, S2, W2)

Data from:
  MB100
  Table 1
  Line 1716:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:7 Apr 2011
Latitude:30°41'25.7"S
Longitude:131°28'24.7"E
Mass (g):24.3
Pieces:1
Class:H5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.00
Ferrosilite (mol%):17.01
Wollastonite (mol%):1.37
Classifier:E. R. Mare
Type spec mass (g):17.9
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)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Australia
Coordinates:
     Recommended::   (30° 41' 26"S, 131° 28' 25"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