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Biduna Blowhole 005
Basic information Name: Biduna Blowhole 005
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2012
Country: Australia
Mass:help 24.2 g
Classification
  history:
Recommended:  H4    [explanation]

This is 1 of 5782 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 2 Feb 2019
Writeuphelp
Writeup from MB 108:

Biduna Blowhole 005        31°04’50.8"S, 131°15’30.9"E

South Australia, Australia

Find: 19 May 2012

Classification: Ordinary chondrite (H4)

History: Single sample found on the windblown edge of a large claypan by J. Kuyken.

Physical characteristics: Mottled red and black sample with 35% fusion crust and several cracks.

Petrography: (A. Tomkins, Monash) Chondrules edges are sharp, glassy chondrules are barely recrystallized; these and chondrule mesostaces have sub-μm crystallites. Chondrules vary significantly in size and composition (varieties include RP, BO, PO, PP, POP, GOP, C, glassy). Olivine has weak undulose extinction; there is mild shock melting and some troilite has been mobilised along fractures. There are sparse troilite halos around chondrules. About 80% of the metal has been destroyed by rusting, whereas most troilite remains.

Geochemistry: (A. Tomkins, Monash) Microprobe analyses: olivine Fa18.6-20.6, mean Fa19.46, std=0.67, n=9; Low-Ca pyroxene Fs16.5-17.8, mean Fs17.28, std=0.42, n=9.

Classification: Ordinary Chondrite (H4, S3, W3)

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:19 May 2012
Latitude:31°04'50.8"S
Longitude:131°15'30.9"E
Mass (g):24.2
Pieces:1
Class:H4
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):19.46
Ferrosilite (mol%):17.28
Wollastonite (mol%):1.45
Classifier:A. Tomkins, Monash
Type spec mass (g):14
Type spec location:Monash
Main mass:Monash
Finder:J. Kuyken
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::   (31° 4' 51"S, 131° 15' 31"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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