Meteoritical Bulletin: Entry for LaPaz Icefield 031173

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

LaPaz Icefield 031173

Basic information

Name: LaPaz Icefield 031173
This is an OFFICIAL meteorite name.
Abbreviation: LAP 031173
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 1.36 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 29(1)	(2006)	H-imp melt
Meteoritical Bulletin:	MB 91	(2007)	H-imp melt
Recommended:			H-imp melt [explanation]

This is 1 of 13 approved meteorites classified as H-imp melt. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 21 Feb 2005

Writeup

Writeup from AMN 29(1):

Sample No.:	LAP 031173; LAP 04642
Location:	LaPaz Ice Field
Field No.:	16105; 17406
Dimensions (cm):	1.5x1.0x0.5 1.0x1.0x0.5
Weight (g):	1.360; 1.196
Meteorite Type:	H Chondrite (Impact Melt)

Macroscopic Description: Kathleen McBride
The exteriors are covered with brown/black fusion crust with oxidation halos. The interiors are rusty brown with a brittle texture.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
These sections are so similar that a single description suffices. The meteorites exhibit a microcrystalline silicate matrix including rounded metal-sulfide blebs reaching 20 microns and relict grains, chondrules and clasts reaching up to a few mm. Mafic silicate compositions (Fa₁₉, Fs₁₇) indicate they are of H chondrite parentage and textures suggest they are impact melt breccias.

Cross-Polarized Light	Plane-Polarized Light	Reflected Light

Cross-Polarized Light	Reflected Light

Data from:
  MB91
  Table 4
  Line 606:

Mass (g):	1.4
Class:	H (IM)
Weathering grade:	C
Fayalite (mol%):	19
Ferrosilite (mol%):	17

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:
Find references in Google Scholar:

Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above

Geography:

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

Crosslinks:

This lists all records that are linked to this record and to each other.

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

Direct link to this page