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Roberts Massif 04114
Basic information Name: Roberts Massif 04114
     This is an OFFICIAL meteorite name.
Abbreviation: RBT 04114
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 282 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  L3
Meteoritical Bulletin:  MB 92  (2007)  L3
Recommended:  L3    [explanation]

This is 1 of 705 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from AMN 29(2):
Sample No.: RBT 04114
Location: Roberts Massif
Field No.: 16395
Dimensions (cm):   7.5x4.5x5.0
Weight (g): 281.6
Meteorite Type: L3 Chondrite


Macroscopic Description: Kathleen McBride
50% of the exterior has thin, black fusion crust. The interior is rusty black matrix with high metal content. There are 1-2 mm sized light colored chondrules visible; some are rust stained.


Thin Section (,2) Description: Tim McCoy
The section exhibits numerous small, well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Weathering is moderate. Silicates are unequilibrated; olivines range from Fa1-29 and pyroxenes are Fs3-18. The meteorite is an L3 chondrite (estimated subtype 3.6).



Thin Section Images

Cross-Polarized LightPlane-Polarized Light
RBT 04114 - Cross-Polarized Light RBT 04114 - Plane-Polarized Light



Lab Images

RBT 04114 Image North
RBT 04114 Image South

Data from:
  MB92
  Table 3
  Line 1016:
Mass (g):281.6
Class:L3
Weathering grade:B/C
Fayalite (mol%):1-29
Ferrosilite (mol%):3-18
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 29(2) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
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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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