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Roberts Massif 04251
Basic information Name: Roberts Massif 04251
     This is an OFFICIAL meteorite name.
Abbreviation: RBT 04251
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 19.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 30(2)  (2007)  H3
Recommended:  H3    [explanation]

This is 1 of 620 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 31 Aug 2007
Writeuphelp
Writeup from AMN 30(2):
Sample No.: RBT 04251
Location: Roberts Massif
Field No.: 16342
Dimensions (cm):   2.0 x 2.0 x 1.5
Weight (g): 19.542
Meteorite Type:

H3 Chondrite



Macroscopic Description: Kathleen McBride
100% of the exterior is covered by brown/black fusion crust with oxidation haloes. The interior is a rusty black matrix with gray chondrules and a high metal content.

Thin Section (,2) Description: Tim McCoy, Lauren LaCroix and Linda Welzenbach
The section exhibits numerous well-defined chondrules of a range of sizes (up to 2.6 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects and weathering are present. Silicates are unequilibrated; olivines range from Fa1-20 and pyroxenes from Fs1-6. The meteorite is an H3 chondrite (estimated subtype 3.4).



Thin Section Images

Plane-Polarized
Light RBT 04251
Cross Polarized Light
RBT 04251
RBT04251 - Plane-Polarized Light RBT04251 - Cross Polarized Light



Lab Images

RBT 04251

Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 30(2) (2007), JSC, Houston
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)

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