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LaPaz Icefield 10018
Basic information Name: LaPaz Icefield 10018
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 10018
Observed fall: No
Year found: 2010
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 255 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 36(2)  (2013)  Howardite
Meteoritical Bulletin:  MB 102  (2013)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 374 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 30 Aug 2013
Writeuphelp
Writeup from AMN 36(2):
Sample Number LAP 10018
Newsletter 36,2
Location LaPaz Icefield
Field Number 22327
Dimensions 6.5 x 5.0 x 4.5
Weight 254.79
Original Classification Howardite
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 29-45; Ferrosilite (mol%): 13-53
Weathering
A
Fracturing
A/B
Macroscopic Description - Kathleen McBride
Shiny patches of brown/black fusion crust covers 60% of the exterior with some oxidation haloes and vugs. The interior is a gray matrix with no metal. Many angular multi-colored clasts of various sizes are visible.
Thin Section Description (,2) - Cari Corrigan and Linda Welzenbach
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with a few fine- to coarse-grained basaltic clasts ranging up to 5 mm and one large diogenitic clast approaching 1 cm. Olivines are Fa29-45. Most of the pyroxene is orthopyroxene with compositions ranging from Fs22-53Wo2-11, a single augite of Fs13Wo39. Fe/Mn ratio is 21-36. The meteorite is a howardite.
Antarctic Meteorite Images for Sample LAP 10018
Thin Section Photograph of Sample LAP 10018 in Plane-Polarized Light  Thin Section Photograph of Sample LAP 10018 in Reflected Light  Thin Section Photograph of Sample LAP 10018 in Cross-Polarized Light  Thin Section Photograph of Sample LAP 10018 in Plane-Polarized Light 
Thin Section Photograph of Sample LAP 10018 in Reflected Light  Thin Section Photograph of Sample LAP 10018 in Cross-Polarized Light  Group Photo of Sample LAP 10018 Showing  South View  Group Photo of Sample LAP 10018 Showing  North View 
Splits View of Sample LAP 10018 
Data from:
  MB102
  Table 0
  Line 0:
Date:2010
Mass (g):254.8
Pieces:1
Class:Howardite
Weathering grade:A
Fayalite (mol%):29-45
Ferrosilite (mol%):13-53
Classifier:SI
Type spec mass (g):254.8
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 39173 approved meteorites from Antarctica (plus 5051 unapproved names)

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