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LaPaz Icefield 031097
Basic information Name: LaPaz Icefield 031097
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 031097
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(1)  (2006)  H3
Meteoritical Bulletin:  MB 91  (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 21 Feb 2005
Writeuphelp
Writeup from AMN 29(1):
Sample No.: LAP 031097
Location: LaPaz Ice Field
Field No.: 16432
Dimensions (cm):   1.25x1.0x0.75
Weight (g): 2.058
Meteorite Type: H3 Chondrite
LAP 031097


Macroscopic Description: Kathleen McBride
50% of this ordinary chondrite's exterior has brown/black fusion crust with oxidation halos. The interior has a black matrix with rust and mm sized gray chondrules.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
Cross-Polarized LightPlane-Polarized Light
LAP 031097 - Cross-Polarized Light LAP 031097 - Plane-Polarized Light
The section exhibits numerous well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. Silicates are unequilibrated; olivines range from Fa6-37, with most grains Fa18, and pyroxenes from Fs8-22. The meteorite is an H3 chondrite (estimated subtype 3.8).
Data from:
  MB91
  Table 4
  Line 560:
Mass (g):2.1
Class:H3
Weathering grade:B
Fayalite (mol%):6-37
Ferrosilite (mol%):8-22
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 29(1) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source 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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