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Ooldea 012
Basic information Name: Ooldea 012
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2013
Country: Australia
Mass:help 169 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L5
Recommended:  L5    [explanation]

This is 1 of 7217 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Jan 2019
Writeuphelp
Writeup from MB 108:

Ooldea 012        30°34’16.4"S, 131°46’18.1"E

South Australia, Australia

Find: 9 Apr 2013

Classification: Ordinary chondrite (L5)

History: Twelve fragments spread over ~20 m2 found by A Tomkins

Physical characteristics: Several flatish blocky fragments up to 4 cm, several with partial fusion crust, weathered to brown-red.

Petrography: (J. Savage, Monash) Porphyritic chondrules >1 mm are recognisable amongst well recrystallized matrix. Two porphyritic chondrules <1 mm have troilite rims. Chondrule mesostasis is completely recrystallized. Minerals present are olivine, pyroxene, plagioclase, Fe-Ni metal and troilite. Chondrule types include PO, C, BO, POP, PP, and RP. The majority of olivine, pyroxene and plagioclase grains exhibit undulose extinction. 85% of Fe-Ni metal is weathered, 50-60% of Sulfides.

Geochemistry: (J. Savage, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa23.0-26.4, mean=Fa24.2, std=1.6, n=5; Low-Ca pyroxene Fs20.3-23.1, mean=Fa21.4, std=1.09, n=5.

Classification: Ordinary chondrite (L5, S2, W3)

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:9 Apr 2013
Latitude:30°34'16.4"S
Longitude:131°46'18.1"E
Mass (g):169.0
Pieces:12
Class:L5
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):24.21
Ferrosilite (mol%):21.36
Classifier:J. Savage, Monash
Type spec mass (g):164.4
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° 34' 16"S, 131° 46' 18"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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