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Ooldea 018
Basic information Name: Ooldea 018
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Australia
Mass:help 200 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L6
Recommended:  L6    [explanation]

This is 1 of 11543 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 2 Feb 2019
Writeuphelp
Writeup from MB 108:

Ooldea 018        30°35’27.5"S, 131°46’18.9"E

South Australia, Australia

Find: 21 Apr 2017

Classification: Ordinary chondrite (L6)

History: 20 fragments were found in a small weathering dispersion elipse

Physical characteristics: A collection of broken fragments.

Petrography: (D. Steele) Chondrules are poorly defined in a stongly recrystallized matrix. Chondrule types include BO, GOP, RP, PP. Mineralogy consists of olivine, plagioclase, pyroxene, minor Fe-Ni metal, and troilite. Olivine displays undulose extinction and planar fractures. Opaque shock veins and melt pockets are present. Fe-Ni metal and troilite are ~95% replaced by Fe oxides.

Geochemistry: (D. Steele) Microprobe analysis shows olivine composition is moderately variable and pyroxene composition is uniform: Olivine Fa24.9-25.3, mean Fa25.0 mol%, std = 0.2, n =5; Orthopyroxene Fs21.63-23.58, mean = 22.55 mol%, std = 0.91, n = 4.

Classification: Ordinary Chondrite (L6, S3, W3)

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:21 Apr 2017
Latitude:30°35'27.5"S
Longitude:131°46'18.9"E
Mass (g):200.0
Pieces:1
Class:L6
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):25.0
Ferrosilite (mol%):22.6
Classifier:D. Steele, Monash
Type spec mass (g):196
Type spec location:Monash
Main mass:Monash
Finder:A.Tomkins
Comments:Submitted by A. Tomkins
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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography:

Australia
Coordinates:
     Recommended::   (30° 35' 27"S, 131° 46' 19"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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