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Balyer Bluff
Basic information Name: Balyer Bluff
     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 2.08 kg
Recommended:  LL6    [explanation]

This is 1 of 2902 approved meteorites (plus 2 unapproved names) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 16 Dec 2020
Writeup from MB 109:

Balyer Bluff        27°27’50.81"S, 117°50’37.82"E

Western Australia, Australia

Find: 2012 Dec 26

Classification: Ordinary chondrite (LL6)

History: Two interlocking, freshly crusted fragments (351.79 and 1728.36 g) were found lying on the surface in 2012 and 2013, respectively, by M. Jefferson (Alex Bevan, WAM).

Physical characteristics: Physical Characteristics: The wedge-shaped, reassembled mass measures 16.5 × 12 × 7 cm. Total weight 2080.15 g (Alex Bevan, WAM).

Petrography: (L. Daly, L. V. Forman, CUWA). Specimen has poorly defined chondrules that have been heavily recrystallized. The sample is domainal with an annealed red stained matrix and clean relict chondrules. The relict chondrules are grouped together and include types C, POP, and BO. Chondrule mesostases are coarsely crystalline. Sizes range from 1.52-5.13 mm with a mean of 2.7 mm (n=8). Mineralogy consists of olivine, pyroxene, chromite, feldspar, as well as some metal and sulfide. Olivine and pyroxene have undulose extinction, and planar fractures, some grains exhibit a weak mosaicism. Feldspars are >50 µm and partially converted to maskelynite. The metal and sulfide present in the sample are blebby, representative of melt pockets, and have been approximately 10% replaced with iron oxide.

Geochemistry: Mineral Compositions and Geochemistry: (L. Daly, L. V Forman, CUWA) EDS, Olivine: Fa27±0.9 (n=11). Low-Ca pyroxene: Fs22.4±0.9Wo1.7±0.2 (n=6). Feldspar Ab86.7.

Classification: Ordinary Chondrite LL6, S4, W2

Specimens: The WAM holds the main mass now 1725.34 g and one thin section.

Data from:
  Table 0
  Line 0:
State/Prov/County:Western Australia
Origin or pseudonym:Cue Shire
Date:2012 Dec 26
Mass (g):2080
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):27
Ferrosilite (mol%):22.4
Wollastonite (mol%):1.7
Classifier:A. W. R. Bevan, WAM, L. Daly and L. V. Forman, CUWA
Type spec mass (g):1725.34
Type spec location:WAM
Main mass:WAM
Finder:M. Jefferson
Comments:Submitted by L. V. Forman (Curtin University, WAM)
   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)
CUWA: Curtin University, Perth 6845, Western Australia, Australia (institutional address)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     Recommended::   (27° 27' 51"S, 117° 50' 38"E)

     This is 1 of 348 approved meteorites from Western Australia, Australia (plus 1 unapproved name) (plus 11 impact craters)
     This is 1 of 718 approved meteorites from Australia (plus 46 unapproved names) (plus 27 impact craters)
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