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Ooldea 011
Basic information Name: Ooldea 011
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2015
Country: Australia
Mass:help 1.7 g
Meteoritical Bulletin:  MB 108  (2020)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2843 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 14 Feb 2019
Writeup from MB 108:

Ooldea 011        30°30’9.30"S, 131°51’23.50"E

South Australia, Australia

Find: 2015 Apr 15

Classification: Ordinary chondrite (LL6)

History: One fragment found by A. Tait, embedded in a cryptogamic soil horizon. Found during the Monash University meteorite recovery expedition.

Physical characteristics: One oval fragment 18 mm long, no fusion crust. Contains crosscutting calcite/gypsum weathering veins.

Petrography: (A. Tait, Monash) Chondrule edges are poorly defined, marked by extensive recrystallization of the matrix. BO and POP relict chondrules are rare, with equilibrated edges. Large (>100 μm) skeletal plagioclase grains exist across most the sample, with blebs of FeNi-alloy melt. Fe-oxide weathering is extensive with <5 wt% FeNi and/or sulfides remaining. Olivine show undulose extinction, but there are no indicators of higher shock.

Geochemistry: (A. Tait, Monash) EDS analyses show that olivine and pyroxene compositions are uniform: olivine Fa25.7-28.5, mean= Fa26.9±1.0 (N=11). Low-Ca pyroxene Fs20.4-23.8Wo1.8-1.2, mean Fs21.3±1.0Wo1.5±0.2 (N=13).

Classification: Ordinary Chondrite (LL6, S2, W4)

Specimens: The main mass and a thin section are held at Monash Under the curation of A. Tomkins.

Data from:
  Table 0
  Line 0:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:2015 Apr 15
Mass (g):1.7
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):26.9±1.0 (N=11)
Ferrosilite (mol%):21.3±1.0 (N=13)
Wollastonite (mol%):1.5
Magnetic suscept.:3.85
Classifier:(A. Tait, Monash)
Type spec mass (g):1.7
Type spec location:Monash
Main mass:Monash
Finder:A. Tait
Comments:Submitted by (A. Tait, A. Tomkins)
   and collections
Monash: Building 28 School of Geosciences Monash University Victoria 3800 Australia, Australia (institutional address; updated 12 Dec 2012)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     Recommended::   (30° 30' 9"S, 131° 51' 24"E)

     This is 1 of 239 approved meteorites from South Australia, Australia (plus 3 unapproved names) (plus 4 impact craters)
     This is 1 of 716 approved meteorites from Australia (plus 46 unapproved names) (plus 27 impact craters)
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