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Ooldea 021
Basic information Name: Ooldea 021
     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 38.9 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 321 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Jan 2019
Writeuphelp
Writeup from MB 108:

Ooldea 021        30°38’31.0"S, 131°54’58.5"E

South Australia, Australia

Find: 26 Apr 2017

Classification: Ordinary chondrite (LL3)

History: A single black specimen found amongst other black terrestrial rocks and limestone gibber by A. Tait

Physical characteristics: Black weakly magnetic sample, ~60% fusion crust.

Petrography: (D. Steele) Chondrules are sharply defined in an opaque matrix. Large chondrules between 1 and 1.5 mm are common. Chondrule types include BO, RP, GOP, GP, PO, POP, PP, cryptocyrstalline and poikilitic. Mineralogy consists of olivine, pyroxene, minor Fe-Ni metal and troilite. Olivine displays straight extinction. Fe-Ni metal and troilite is 30%-60% oxidised.

Geochemistry: (D. Steele) Microprobe analysis shows olivine and pyroxene composition is widely variable: olivine Fa17.1-49.5, mean = Fa28.3, std = 12.83, n = 5; orthopyroxene Fs8.35-38.1, mean = Fa22.6, std = 11.86, n = 5.

Classification: Ordinary Chondrite (LL3, S1, W2)

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:26 Apr 2017
Latitude:30°38'31.0"S
Longitude:131°54'58.5"E
Mass (g):38.9
Pieces:1
Class:LL3
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):28.25
Ferrosilite (mol%):22.63
Classifier:D. Steele, Monash
Type spec mass (g):35
Type spec location:Monash
Main mass:Monash
Finder:A. Tait
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, in preparation (2019)
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Geography:

Australia
Coordinates:
     Recommended::   (30° 38' 31"S, 131° 54' 59"E)

Statistics:
     This is 1 of 233 approved meteorites from South Australia, Australia (plus 3 unapproved names) (plus 4 impact craters)
     This is 1 of 702 approved meteorites from Australia (plus 46 unapproved names) (plus 27 impact craters)
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