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LaPaz Icefield 10109
Basic information Name: LaPaz Icefield 10109
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 10109
Observed fall: No
Year found: 2010
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 7.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 36(2)  (2013)  L3.5
Meteoritical Bulletin:  MB 102  (2013)  L3.5
Recommended:  L3.5    [explanation]

This is 1 of 95 approved meteorites classified as L3.5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 30 Aug 2013
Writeuphelp
Writeup from AMN 36(2):
Sample Number LAP 10109
Newsletter 36,2
Location LaPaz Icefield
Field Number 22966
Dimensions 2.9 x 1.5 x 1.5
Weight 7.41
Original Classification L3.5 chondrite
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 3-35; Ferrosilite (mol%): 21-28
Weathering
A/B
Fracturing
A
Macroscopic Description - Cecilia Satterwhite
30% of the exterior is covered with black/brown fusion crust. Oxidation haloes and brown weathering are visible on some surfaces. The interior is gray matrix with some large inclusions. Oxidation is scattered throughout and minor metal is visible.
Thin Section Description (,2) - Cari Corrigan and Linda Welzenbach
The section exhibits numerous small to medium, well-defined chondrules (though one fragment is up to 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 are Fa3-35. Pyroxenes are Fs21-28Wo2-6. The meteorite is an L3 chondrite (estimated subtype 3.5).
Antarctic Meteorite Images for Sample LAP 10109
Thin Section Photograph of Sample LAP 10109 in Plane-Polarized Light  Thin Section Photograph of Sample LAP 10109 in Reflected Light  Thin Section Photograph of Sample LAP 10109 in Cross-Polarized Light  Thin Section Photograph of Sample LAP 10109 in Plane-Polarized Light 
Thin Section Photograph of Sample LAP 10109 in Reflected Light  Thin Section Photograph of Sample LAP 10109 in Cross-Polarized Light  North View of Sample LAP 10109 
Data from:
  MB102
  Table 0
  Line 0:
Date:2010
Mass (g):7.4
Pieces:1
Class:L3.5
Weathering grade:A/B
Fayalite (mol%):3-35
Ferrosilite (mol%):21-28
Classifier:SI
Type spec mass (g):7.4
Type spec location:JSC
Main mass:JSC
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections
JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 36(2) (2013), JSC, Houston
Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:Unknown.

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

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