Meteoritical Bulletin: Entry for Grosvenor Mountains 17022

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Grosvenor Mountains 17022

Basic information

Name: Grosvenor Mountains 17022
This is an OFFICIAL meteorite name.
Abbreviation: GRO 17022
Observed fall: No
Year found: 2017
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 112.4 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	L3.6
Recommended:			L3.6 [explanation]

This is 1 of 62 approved meteorites classified as L3.6. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 13 Mar 2021

Writeup

help

Writeup from AMN 44(1):

Sample Number

GRO 17022

Newsletter

44,1

Location

Grosvenor Mountains

Field Number

25582

Dimensions

5.0 x 3.5 x 3.2

Weight

112.39

Original Classification

L3.6 Chondrite

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 3-31;Ferrosilite (mol%): 7

A/B

A/B

Macroscopic Description - Kellye Pando

About 99% of the exterior is covered with dark grey-brown possible fusion crust that is rough, fractured and pitted. Small exposed areas are a grey-brown matrix with small dark inclusions visible. Fresh interior is dark brown fine-grained matrix with large (up to 2 mm) round, light grey clasts along with orange rust spots in the matrix and clasts.

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

The section exhibits numerous well-defined chondrules (up to 1 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is common. The meteorite is modestly weathered. Silicates are unequilibrated; olivines range from Fa_3-31, and pyroxene is Fs₇. The meteorite is an L3 chondrite (estimated subtype 3.6).

Antarctic Meteorite Images for Sample GRO 17022

Lab Photo(s) :

Lab Photo of Sample GRO 17022

Lab Photo of Sample GRO 17022

Antarctic Meteorite Images for Sample GRO 17022

Thin Section Photo(s) :

Thin Section Photo of Sample GRO 17022 in Cross-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample GRO 17022 in Plane-Polarized Light with 2.5X Magnification

Thin Section Photo of Sample GRO 17022 in Reflected Light with 2.5X Magnification

Data from:
  MB110
  Table 0
  Line 0:

Date:	2017
Latitude:	-85.8348
Longitude:	174.023
Mass (g):	112.39
Pieces:	1
Class:	L3.6
Weathering grade:	A/B
Fayalite (mol%):	3-31
Ferrosilite (mol%):	7
Classifier:	SI
Type spec mass (g):	112.39
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	EMPA; 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 44(1) (2021), JSC, Houston
Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(85° 50' 5"S, 174° 1' 23"E)

Statistics:
This is 1 of 45041 approved meteorites from Antarctica (plus 3472 unapproved names)

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