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Cook 013
Basic information Name: Cook 013
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2010
Country: Australia
Mass:help 46.8 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H6
Recommended:  H6    [explanation]

This is 1 of 5855 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Feb 2012
Writeuphelp
Writeup from MB 100:

Cook 013        30°56’51.9"S, 130°54’30.9"E

South Australia, Australia

Found: 17 Apr 2010

Classification: Ordinary chondrite (H6)

History: Single piece found by K. Bell on the Nullarbor Plain.

Physical characteristics: Heavily weathered, no fusion crust.

Petrography: (A. Tomkins, Monash) Poorly defined chondrules to 1.5mm , sit in a strongly recrystallized matrix. Some plagioclase grains >100 μm. Chondrule types include RP, POP, PP, BO and PO. The sample is nonporous and has domains of significant shock blackening. Fe-Ni metal grains look to have been abundant, but have been largely removed (80-90%) by rusting. Abudnant troilite has been mildly weathered. Melt patches are abundant (spherical globules of troilite in silicate), and troilite-filled fracture networks are common in some domains. Olivine grains show mosaicism and shock lamellae. Plagioclase has been converted to maskelynite.

Geochemistry: (A. Tomkins, Monash) Microprobe analyses show that olivine compositions are uniform, whereas pyroxene compositions are moderately variable: olivine Fa18.7-19.6, mean=19.11 mol%, std=0.47, n=7; Low-Ca pyroxene Fs16.8-20.6, mean=17.71 mol%, std=1.36, n=7.

Classification: Ordinary chondrite (H6, S5, W3)

Data from:
  MB100
  Table 1
  Line 65:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor Plain
Date:17 Apr 2010
Latitude:30°56'51.9"S
Longitude:130°54'30.9"E
Mass (g):46.8
Pieces:1
Class:H6
Shock stage:S5
Weathering grade:W3
Fayalite (mol%):19.11
Ferrosilite (mol%):17.71
Wollastonite (mol%):1.58
Classifier:A. Tomkins
Type spec mass (g):29.6
Type spec location:Monash
Main mass:Monash
Finder:K.Bell
Comments:Submitted by A. Tomkins, B. Schaefer, M. Pankhurst, K. Bell
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. 100, MAPS 49, E1-E101 (2014)
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Geography:

Australia
Coordinates:
     Recommended::   (30° 56' 52"S, 130° 54' 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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