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Meridiani Planum 005
Basic information Name: Meridiani Planum 005
     This is an OFFICIAL meteorite name.
Abbreviation: MP 005
Observed fall: No
Year found: 2009
Planet: Mars
Mass:help 373 g
Recommended:  Stony iron    [explanation]

This is 1 of 4 approved meteorites classified as Stony iron.   [show all]
Search for other: Metal-rich meteorites, Unclassified meteorites
Comments: Approved 17 May 2020
Writeup from MB 109:

Meridiani Planum 005        2.106°S, 5.520°W


Find: 12 May 2009

Classification: Stony-iron

History: The Mars Exploration Opportunity discovered a cobble on the plains of Merdiani Planum ~3 km south of Victoria crater. The cobble, informally named Kasos (henceforth Meridiani Planum 005), was investigated between sols 1884 and 1890.

Physical characteristics: In MI images, the rock has a glassy, lustrous appearance with few visible grains or clasts, and Pancam color variations are subtle, apparently caused by variations in dust abundance on the surface of the cobble (Weitz et al., 2010). Dimensions: 7 × 6 cm.

Geochemistry: The iron-bearing mineralogy determined with the rover’s Mössbauer spectrometer is dominated by ferrous iron in olivine and pyroxene, with smaller amounts in troilite. Small amounts of metallic iron in the form of kamacite are also present; ferric iron is likely a result of alteration on Mars (Fleischer et al., 2010b; Schröder et al., 2010). The chemical composition is rich in Ni, Mg, and Cr and poor in Al, K, and Ti compared to other material on the plains of Meridiani Planum and excavated by craters in the area.

Classification: Kasos is similar in Mg/Si, Ca/Si and Al/Si ratios to howardites and diogenites, but enriched in S/Si, Fe/Si and Ni and depleted in O (Fleischer et al., 2010b; Schröder et al., 2010). The HED-like silicate composition with additional metal and sulfide composition links Meridiani Planum 005 with the HED or potentially the mesosiderite group. Meridiani Planum 005 is likely paired with Meridiani Planum 002, 003, and 004.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Meridiani Planum
Date:12 May 2009
Mass (g):373-462
Classifier:B. Cohen, GSFC
Type spec mass (g):0
Type spec location:Mars
Main mass:Mars
Finder:Opportunity rover
Comments:Submitted by B. Cohen, GSFC
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Public domain photographs:
Barbara Cohen   

Coordinates on Mars:
     Recommended::   (2° 6' 22"S, 5° 31' 12"W)

     This is 1 of 15 approved meteorites from Mars
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