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Mount Prestrud 95404
Basic information Name: Mount Prestrud 95404
     This is an OFFICIAL meteorite name.
Abbreviation: PRE 95404
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 39.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 20(2)  (1997)  CV3
Meteoritical Bulletin:  MB 82  (1998)  CV3
NHM Catalogue:  5th Edition  (2000)  CV3
MetBase:  v. 7.1  (2006)  R3
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  R3
Recommended:  R3    [explanation]

This is 1 of 32 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Writeuphelp
Writeup from AMN 20(2):
Sample No.:PRE95404
Location:Mount Prestrud
Dimensions (cm):5.0x2.0x2.0
Weight (g):39.523
Meteorite Type:CV3 Chondrite


Macroscopic Description: Kathleen McBride
Fifty percent of the exterior of this carbonaceous chondrite has dull brown/black fusion crust. It has a rough texture and polygonal fractures. The interior reveals a gray crystalline matrix with metal grains present. Light colored chondrules, mm sized, are visible in the interior.

Thin Section (,2) Description: Brian Mason
The sections shows numerous chondrules (up to 1.2 mm across), chondrule fragments, irregular aggregates, and silicate grains in a black matrix which contains a moderate amount of nickel-iron and sulfide. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-41; pyroxene, Fs7-21. The matrix consists largely of olivine, with composition around Fa30. The meteorite is tentatively classified as a C3 chondrite of the Vigarano subtype, but it lacks the marked olivine composition peak at Fa0-1 commonly present in C3 chondrites.

PRE95404 TS - Plane Polarized LightPRE95404 TS - Cross Polarized Light
Plane-Polarized LightCross-Polarized Light
Data from:
  MB82
  Table A1
  Line 305:
Origin or pseudonym:Prestrud-Bjaaland Ice Tongue
Mass (g):39.5
Class:CV3
Weathering grade:A
Fayalite (mol%):1-41
Ferrosilite (mol%):7-21
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 20(2) (1997), JSC, Houston
Published in Meteoritical Bulletin, no. 82, MAPS 33, A221-A240 (1998)
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Photos:
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Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (86° 34'S, 165° 7'W)
     Recommended::   (86° 34'S, 165° 7'W)

Statistics:
     This is 1 of 38937 approved meteorites from Antarctica (plus 5051 unapproved names)
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