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Knardna 002
Basic information Name: Knardna 002
     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 24.8 g
Classification
  history:
Recommended:  H4    [explanation]

This is 1 of 5788 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:

Knardna 002        31°00’07.0"S, 130°54’33.2"E

South Australia, Australia

Find: 16 May 2012

Classification: Ordinary chondrite (H4)

History: Found by A Langendam on a claypan

Physical characteristics: Dark red-black rounded sample with 65% fusion crust.

Petrography: (A. Tomkins, Monash) The matrix and mesostases are fine-grained and barely recrystallized. Chondrules edges are distinct, and vary significantly in size and composition (varieties include RP, BO, PO, PP, POP, GOP, C). Very small plagioclase grains (< 10 μm) can be distuinguished in reflected light. Olivine has weak undulose extinction; there is no shock melting. Metal grains are completed destroyed by rusting, and some troilite remains.

Geochemistry: (A. Tomkins, Monash) Microprobe analyses: olivine Fa19.2-20.4, mean Fa19.7, std=0.26, n=8; Low-Ca pyroxene Fs16.4-18.9, mean Fs17.38, std=0.40, n=12.

Classification: Ordinary Chondrite (H4, S2, W4)

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:16 May 2012
Latitude:31°00'07.0"S
Longitude:130°54'33.2"E
Mass (g):24.8
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):19.7
Ferrosilite (mol%):17.4
Wollastonite (mol%):1.1
Classifier:A. Tomkins, Monash
Type spec mass (g):22.3
Type spec location:Monash
Main mass:Monash
Finder:A. Langendam
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° 0' 7"S, 130° 54' 33"E)

Statistics:
     This is 1 of 235 approved meteorites from South Australia, Australia (plus 2 unapproved names) (plus 4 impact craters)
     This is 1 of 704 approved meteorites from Australia (plus 45 unapproved names) (plus 27 impact craters)
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