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| Balyer Bluff | |||||||||||||||||||||||||||||||||||||||
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| 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:  2.08 kg | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 2883 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 |
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: MB109 Table 0 Line 0: |
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| 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) CUWA: Curtin University, Perth 6845, Western Australia, Australia (institutional address) |
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| References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:
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Statistics: This is 1 of 347 approved meteorites from Western Australia, Australia (plus 1 unapproved name) (plus 11 impact craters) This is 1 of 717 approved meteorites from Australia (plus 46 unapproved names) (plus 27 impact craters) | ||||||||||||||||||||||||||||||||||||||
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