Meteoritical Bulletin: Entry for Ooldea 018

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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: 200 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	L6
Recommended:			L6 [explanation]

This is 1 of 12780 approved meteorites (plus 11 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

Writeup

help

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 Fa_24.9-25.3, mean Fa_25.0mol%, std = 0.2, n =5; Orthopyroxene Fs_21.63-23.58, 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

Australia

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

Statistics:
This is 1 of 241 approved meteorites from South Australia, Australia (plus 3 unapproved names) (plus 4 impact craters)
This is 1 of 719 approved meteorites from Australia (plus 11 unapproved names) (plus 27 impact craters)

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Revision
history:

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