Meteoritical Bulletin: Entry for Grosvenor Mountains 17176

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 5 Oct 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:

Grosvenor Mountains 17176

Basic information

Name: Grosvenor Mountains 17176
This is an OFFICIAL meteorite name.
Abbreviation: GRO 17176
Observed fall: No
Year found: 2017
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 131.1 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	Eucrite-pmict
Antarctic Meteorite Newsletter:	AMN 41(2)	(2018)	Eucrite-pmict
Recommended:			Eucrite-pmict [explanation]

This is 1 of 425 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 28 Sep 2018

Writeup

help

Writeup from AMN 41(2):

Sample Number

GRO 17176

Newsletter

41,2

Location

Grosvenor Mountains

Field Number

25601

Dimensions

7.0 x 5.0 x 2.5

Weight

131.112

Original Classification

Eucrite (Polymict)

Pairing

GRO 17049, GRO 17099, GRO 17048

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 0; Ferrosilite (mol%): 27-63

A/B

A

Macroscopic Description - Rachel Funk, Cecilia Satterwhite

The exteriors range from 60% to 90% black, glassy fusion crust, with some rust spots. The exposed surfaces vary in color from gray to black to white, with white and tan clasts and minor amounts of rust. The fresh interior surfaces have light gray and white matrices with white 1-2 mm white clasts and 1 mm sized rust spots.

Thin Section Description (,2) - Cari Corrigan, Tim McCoy

These sections are similar enough to suggest that they represent a single, coarse-grained, cataclastized, brecciated, cumulate eucrite. The sections are composed of coarse (up to 2 mm) pyroxene and plagioclase crosscut by numerous offset fractures. Mineral compositions are homogeneous with orthopyroxene (Fs_63-66Wo₂), with lamellae of augite (Fs_20-29Wo_52-66), and plagioclase (An_88-92Or_0.5). The Fe/Mn ratio of the pyroxene is ~31. The meteorites are polymict eucrites.

Antarctic Meteorite Images for Sample GRO 17176

Lab Photo of Sample GRO 17176 Displaying Splits View

Lab Photo of Sample GRO 17176 Displaying West Orientation

Lab Photo of Sample GRO 17176 Displaying North Orientation

Lab Photo of Sample GRO 17176 Displaying East Orientation

Lab Photo of Sample GRO 17176 Displaying Bottom Orientation

Thin Section Photo of Sample GRO 17176 in Cross-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample GRO 17176 in Plane-Polarized Light with 2.5X Magnification

Data from:
  MB107
  Table 0
  Line 0:

Date:	2017
Mass (g):	131.112
Pieces:	1
Class:	Eucrite-pmict
Weathering grade:	A/B
Ferrosilite (mol%):	27-63
Magnetic suscept.:	2.65
Classifier:	SI
Type spec mass (g):	131.112
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	Submitted by AMN

Institutions
and collections

JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
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 41(2) (2018), JSC, Houston
Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 45260 approved meteorites from Antarctica (plus 3472 unapproved names)

Direct link to this page