Meteoritical Bulletin: Entry for Grosvenor Mountains 17139

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Grosvenor Mountains 17139

Basic information

Name: Grosvenor Mountains 17139
This is an OFFICIAL meteorite name.
Abbreviation: GRO 17139
Observed fall: No
Year found: 2017
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 8.4 g

Classification
history:

Recommended:

CK6 [explanation]

This is 1 of 70 approved meteorites classified as CK6. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 13 Mar 2021

Writeup

help

Writeup from AMN 44(1):

Sample Number

GRO 17139

Newsletter

44,1

Location

Grosvenor Mountains

Field Number

25573

Dimensions

2.5 x 1.8 x 1.7

Weight

8.43

Original Classification

CK6 CHONDRITE

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 26

A/B

A/B

Macroscopic Description - Kellye Pando

85% of exterior is covered with rough, fractured, black frothy fusion crust. Exposed area is very dark grey-black. Fresh interior is dark grey-black matrix with some like orange-yellow weathering concentrated near exterior edges.

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

The section consists of a few (up to 1 mm), poorly-defined chondrules in a matrix of finer-grained silicates, sulfides and magnetite. The meteorite displays moderate weathering and is very extensively shock blackened. Silicates are homogeneous. Olivine is Fa₂₆. No pyroxene analyses were obtained. The meteorite appears to be a CK6 chondrite.

Antarctic Meteorite Images for Sample GRO 17139

Lab Photo(s) :

Lab Photo of Sample GRO 17139

Lab Photo of Sample GRO 17139

Antarctic Meteorite Images for Sample GRO 17139

Thin Section Photo(s) :

Thin Section Photo of Sample GRO 17139 in Cross-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample GRO 17139 in Plane-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample GRO 17139 in Reflected Light with 2.5X Magnification

Data from:
  MB110
  Table 0
  Line 0:

Date:	2017
Latitude:	-85.9206
Longitude:	174.377
Mass (g):	8.43
Pieces:	1
Class:	CK6
Weathering grade:	A/B
Fayalite (mol%):	26
Classifier:	SI
Type spec mass (g):	8.43
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	EMPA; 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 44(1) (2021), JSC, Houston
Published in Meteoritical Bulletin, no. 110, in preparation (2021)

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Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(85° 55' 14"S, 174° 22' 37"E)

Statistics:
This is 1 of 40759 approved meteorites from Antarctica (plus 4494 unapproved names)

Proximity search:

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