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Mount Marion
Basic information Name: Mount Marion
     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 38.3 g
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 10254 approved meteorites (plus 18 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
Writeuphelp
Writeup from MB 109:

Mount Marion        31°5’53"S, 121°28’42"E

Western Australia, Australia

Find: 2010 Sept

Classification: Ordinary chondrite (H5)

History: A single stone of 38.3 g was found at a depth of 12" in an alluvial wash by a person with a metal detector.

Physical characteristics: Physical characterisitics: A completely crusted stone.

Petrography: (A. W. R. Bevan, WAM) Discernable chondrules are set in a moderately crystalline matrix. Chondrule mesostases are devitrified to microcrystalline. Olivine shows undulose extinction to mosaicism and abundant planar fractures. The fabric of the meteorite is pervaded by black shock veins with melted troilite and metal droplets.

Geochemistry: Mineral compositions and geochemistry: (P. Downes, WAM) Mineral compositions as determined by EMP: olivine Fa19.1; orthopyroxene Fs16.8Wo1.12; chromite #Cr 86.0; kamacite (average n=7) Ni 6.85%, Co 0.46%. Petrographically and mineralogically similar to Lake Gwynne found 63.8 km away.

Classification: (H5); S4: W1.

Specimens: Type specimen 12.65 g, cut slices 11.45 and 10.86 g, and thin section at WAM.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Western Australia
Origin or pseudonym:Coolgardie Shire
Date:2010 Sept
Latitude:31°5'53"S
Longitude:121°28'42"E
Mass (g):38.3
Pieces:1
Class:H5
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):19.1
Ferrosilite (mol%):16.8
Wollastonite (mol%):1.12
Classifier:A. W. R. Bevan, WAM
Type spec mass (g):12.65
Type spec location:WAM
Main mass:finder
Finder:G. Munro
Comments:Submitted by L. V. Forman (Curtin University, WAM)
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. 109, in preparation (2020)
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Geography:

Australia
Coordinates:
     Recommended::   (31° 5' 53"S, 121° 28' 42"E)

Statistics:
     This is 1 of 346 approved meteorites from Western Australia, Australia (plus 1 unapproved name) (plus 11 impact craters)
     This is 1 of 715 approved meteorites from Australia (plus 45 unapproved names) (plus 27 impact craters)
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