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Leonora
Basic information Name: Leonora
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1990
Country: Australia
Mass:help 2.57 kg
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  L4
Recommended:  L4    [explanation]

This is 1 of 1617 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 29 May 2012
Writeuphelp
Writeup from MB 100:

Leonora        28°50’42.7"S, 121°23’49.2"E

Western Australia, Australia

Found: circa 1990

Classification: Ordinary chondrite (L4)

History: A single stone, buried 30 cm below the surface, was found with a metal detector, then broken into two pieces by the finder and discarded. Approximately ten years later two pieces were retrieved and further broken before being recognized as a meteorite.

Physical characteristics: Four crusted fragments weighing 1340 g, 1217 g, 12.73 g and 2.28 g can be reassembled to make an almost complete individual.

Petrography: (A. W. R. Bevan and P. J. Downes, WAM) Microscopically, chondrules with microcrystalline, devitrified mesostases can be clearly distinguished and are set in a microcrystalline, iron-stained matrix. Chondrule types include barred and porphyritic olivine and radiating pyroxene. Abundant grains of polysynthetically twinned clinopyroxene occur in chondrules. Accessory minerals include kamacite, taenite and chromite.

Geochemistry: (A. W. R. Bevan and P. Downes, WAM) Olivine, Fa24.8 (n=13); low-Ca pyroxene, Fs21.1-26.1Wo0.96-2.4; kamacite, Ni=5.46, Co=0.74 (all wt%); chromite, Cr# 88.,1 Fe# 87.4.

Classification: Ordinary chondrite (L4); S2; W2

Specimens: Main mass and three thin sections at WAM.

Data from:
  MB100
  Table 1
  Line 557:
State/Prov/County:Western Australia
Date:circa 1990
Latitude:28°50'42.7"S
Longitude:121°23'49.2"E
Mass (g):2572
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):24.8
Ferrosilite (mol%):21.5
Wollastonite (mol%):0.96
Classifier:A. W. R. Bevan, WAM
Type spec mass (g):2572
Type spec location:WAM
Main mass:WAM
Finder:Unknown
Comments:Submitted by A. W. R. Bevan
Institutions
   and collections
WAM: Department of Earth & Planetary Sciences, Western Australian Museum. Locked Bag 49, Welshpool DC, Western Australia 6986, Australia; Website (institutional address; updated 18 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:

Australia
Coordinates:
     Recommended::   (28° 50' 43"S, 121° 23' 49"E)

Statistics:
     This is 1 of 339 approved meteorites from Western Australia, Australia (plus 1 unapproved name) (plus 11 impact craters)
     This is 1 of 704 approved meteorites from Australia (plus 45 unapproved names) (plus 27 impact craters)
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