Meteoritical Bulletin: Entry for Ooldea 020

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Ooldea 020

Basic information

Name: Ooldea 020
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Australia
Mass: 95 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	H5
Recommended:			H5 [explanation]

This is 1 of 11567 approved meteorites (plus 23 unapproved names) classified as H5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 23 Jan 2019

Writeup

Writeup from MB 108:

Ooldea 020 30°37’23.3"S, 131°53’43.2"E

South Australia, Australia

Find: 26 Apr 2017

Classification: Ordinary chondrite (H5)

History: Single stone found by j. Mitchell

Physical characteristics: Single piece with ~50% fusion crust.

Petrography: (D. Steele) Chondrules are well-defined in a transparent microcrystalline matrix. Chondrule types include BO, GOP, GP, RP, POP, PP, and cryptocrystalline. Mineralogy consists of olivine, pyroxene, plagioclase, Fe-Ni metal and troilite. Olivine and pyroxene display straight extinction. Fe-Ni metal and troilite are ~10% replaced by Fe oxides.

Geochemistry: (D. Steele) Microprobe analysis shows olivine and pyroxene compostion is uniform: Olivine Fa_18.3-19.2, mean = Fa_18.8, std = 0.32, n = 5; Orthopyroxene Fs_16.52-16.9, mean = 16.7, std = 0.16, n = 5.

Classification: Ordinary Chondrite (H5, S1, W1)

Data from:
  MB108
  Table 0
  Line 0:

State/Prov/County:	South Australia
Origin or pseudonym:	Nullarbor Plain
Date:	26 Apr 2017
Latitude:	30°37'23.3"S
Longitude:	131°53'43.2"E
Mass (g):	95.0
Pieces:	1
Class:	H5
Shock stage:	S1
Weathering grade:	W1
Fayalite (mol%):	18.77
Ferrosilite (mol%):	16.68
Classifier:	D. Steele, Monash
Type spec mass (g):	91
Type spec location:	Monash
Main mass:	Monash
Finder:	J. Mitchell
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° 37' 23"S, 131° 53' 43"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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