Meteoritical Bulletin: Entry for Tungsten Mountain 057

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Tungsten Mountain 057

Basic information

Name: Tungsten Mountain 057
This is an OFFICIAL meteorite name.
Abbreviation: TM 057
Observed fall: No
Year found: 2001
Country: United States
Mass: 11.5 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	H5
Recommended:			H5 [explanation]

This is 1 of 11568 approved meteorites (plus 23 unapproved names) classified as H5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 7 Jul 2020

Writeup

Writeup from MB 109:

Tungsten Mountain 057 (TM 057) 39°41.3294’N, 117°37.1671’W

Nevada, United States

Find: 4 Aug 2001

Classification: Ordinary chondrite (H5)

History: While conducting meteorite recovery on a dry-lake in Edwards Creek Valley, Robert Verish found this stone fragment on 2001-08-04

Physical characteristics: A single 11.5 g stony fragment, rectangular-solid (23 × 21 × 11 mm) having dark-brown exterior with two sides fusion-crusted. Cut surface reveals an orange and beige interior with small metal-grains and chondrules.

Petrography: (D. Sheikh, FSU) Low chondrule abundance (300-1000 µm, n=5). Sample is composed of olivine, low-ca pyroxene, recrystallized plagioclase (average size 6±2 µm), troilite, Fe-Ni metal, Fe-oxides, and chromite.

Geochemistry: Olivine (Fa_18.7±0.4, n=14), Low-Ca Pyroxene (Fs_16.3±0.4Wo_1.3±0.2, n=13).

Classification: Ordinary Chondrite (H5)

Specimens: 9.9 g at UCLA; main mass with Verish.

Data from:
  MB109
  Table 0
  Line 0:

State/Prov/County:	Nevada
Origin or pseudonym:	drylake
Date:	4 Aug 2001
Latitude:	39°41.3294'N
Longitude:	117°37.1671'W
Mass (g):	11.5
Pieces:	1
Class:	H5
Shock stage:	S3
Weathering grade:	W4
Fayalite (mol%):	18.7±0.4 (N=14)
Ferrosilite (mol%):	16.3±0.4 (N=13)
Wollastonite (mol%):	1.3±0.2 (N=13)
Classifier:	D. Sheikh, FSU
Type spec mass (g):	9.9
Type spec location:	UCLA
Main mass:	Verish
Finder:	Robert Verish
Comments:	Fieldname = ECVB04; lab ID# = V-B04; abbr. = TM 057; submitted by Daniel Sheikh

Institutions
and collections

TM: Geoscience Museum, Transvaal Museum, P. O. Box 413, Pretoria 0001, South Africa (institutional address; updated 3 Mar 2011)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Verish: Robert Verish, Meteorite-Recovery Lab, P.O. Box 463084, Escondido, CA 92046, United States; Website (private address; updated 27 May 2009)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

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Photos:

Credit	Photos
Public domain photographs:
Daniel Sheikh

Geography:

United States

Coordinates:
Recommended::	(39° 41' 20"N, 117° 37' 10"W)

Statistics:
This is 1 of 184 approved meteorites from Nevada, United States (plus 4 unapproved names)
This is 1 of 1927 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)

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Revision
history:

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