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Mount Prestrud 95411
Basic information Name: Mount Prestrud 95411
     This is an OFFICIAL meteorite name.
Abbreviation: PRE 95411
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 43.7 g
Antarctic Meteorite Newsletter:  AMN 20(2)  (1997)  R
Meteoritical Bulletin:  MB 82  (1998)  R
NHM Catalogue:  5th Edition  (2000)  R
MetBase:  v. 7.1  (2006)  R3
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  R3
Recommended:  R3    [explanation]

This is 1 of 63 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Writeup from AMN 20(2):
Sample No.: PRE95410; PRE95411; PRE95412
Location: Mount Prestrud
Dimensions (cm): 4.0x3.0x2.5; 4x2.5x2; 2.5x2.5x2
Weight (g): 41.65; 43.69; 14.63
Meteorite Type: R Chon. (Carlisle Lakes)

Macroscopic Description: Kathleen McBride
The surface of all three of these meteorites have black fusion crust with polygonal fractures. The surfaces are pitted and vesicular. The interior is medium gray with small light clasts and chondrules visible.

Thin Section (PRE95410,2; PRE95411,2; PRE95412,2) Description: Brian Mason
The sections are so similar that a single description suffices; the meteorites are certainly paired. The sections show polycrystalline silicates clasts (up to 3 mm across), chondrules (up to 1.2 mm across) and mineral grains in a finely granular gray matrix. Nickel-iron and sulfide are present in accessory amounts. The meteorite is essentially unweathered. Microprobe analyses show olivine and pyroxene of variable composition. Olivine compositions show a prominent peak at Fa39, with a few more magnesian grains., Pyroxene is present in minor amounts, both hypersthene (Wo4Fs29) and diopside (Wo45Fs15). The meteorite is an R chondrite, very similar to PCA91002 (Meteoritics, 29, p.255, 1994).

PRE95411 TS - Plane Polarized Light PRE95411 TS - Cross Polarized Light
Plane-Polarized Light Cross-Polarized Light

Data from:
  Table A1
  Line 312:
Origin or pseudonym:Prestrud-Bjaaland Ice Tongue
Mass (g):43.7
Weathering grade:A/B
Fayalite (mol%):1-41
Ferrosilite (mol%):15-29
Comments:95410 pairing group
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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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Photographs from AMN:
Photograph from unknown source A photo is in the write-up above

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

     This is 1 of 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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