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Lake Gwynne | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: Lake Gwynne This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2003 Country: Australia Mass: 210 g | ||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 11567 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
Comments: | Approved 16 Dec 2020 | ||||||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Lake Gwynne 30°31’57"S, 121°36’27"E Western Australia, Australia Find: 2003 Classification: Ordinary chondrite (H5) History: A single stone was found on the surface. Physical characteristics: Physical characterisitics: A completely crusted stone. Petrography: (A. W. R. Bevan, WAM). Indistinct chondrules are set in a moderately crystalline matrix. Chondrule mesostases are devitrified to microcrystalline. Heavily shocked with abundant black veins with mobilized troilite and metal. Olivine shows variable undulose extinction to strong mosaicism and planar fracturing closer to shock veins. Geochemistry: Mineral compositions and geochemistry: (P. Downes WAM). Mineral compositions as determined by EMP: olivine Fa19; orthopyroxene Fs16.9 Wo1.06; chromite #Cr 85.8; kamacite (average n=8) Ni 6.28%, Co 0.52%. Petrographically and mineralogically similar to Mount Marion found 63.8 km away. Classification: (H5); S4: W1. Specimens: Type specimens 23.68 g and thin section WAM. Main mass in possession of finder. | ||||||||||||||||||||||||||||||||||||||
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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 348 approved meteorites from Western Australia, Australia (plus 1 unapproved name) (plus 11 impact craters) This is 1 of 719 approved meteorites from Australia (plus 11 unapproved names) (plus 27 impact craters) | ||||||||||||||||||||||||||||||||||||||
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Revision history: |
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