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Tungsten Mountain 073
Basic information Name: Tungsten Mountain 073
     This is an OFFICIAL meteorite name.
Abbreviation: TM 073
Observed fall: No
Year found: 2001
Country: United States
Mass:help 28.5 g
Meteoritical Bulletin:  MB 109  (2020)  H5
Recommended:  H5    [explanation]

This is 1 of 11471 approved meteorites (plus 22 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 from MB 109:

Tungsten Mountain 073 (TM 073)        39°40.7732’N, 117°37.7552’W

Nevada, United States

Find: 5 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 2001-08-05

Physical characteristics: A single 28.5 g stony fragment, pyrimidal in shape (40 × 30 × 23 mm) having dark-brown, hackly exterior with some black patina. One side is covered in a patchy, rough-surfaced relict fusion -crust. Cut surface reveals many small metal-grains and small chondrules in a light-brown matrix.

Petrography: (D. Sheikh, FSU) Low chondrule abundance (900-1200 µm, n=3). Sample is composed of olivine, low-ca pyroxene, recrystallized plagioclase (average size 8±2 µm), troilite, Fe-Ni metal, Fe-oxides, and chromite.

Geochemistry: Olivine (Fa19.3±0.5, n=9), Low-Ca Pyroxene (Fs16.8±0.7Wo1.2±0.2, n=20).

Classification: Ordinary Chondrite (H5)

Specimens: 26.2 g at UCLA; main mass with Verish.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:drylake
Date:5 Aug 2001
Mass (g):28.5
Shock stage:S3
Weathering grade:W4
Fayalite (mol%):19.3±0.5 (N=9)
Ferrosilite (mol%):16.8±0.7 (N=20)
Wollastonite (mol%):1.2±0.2 (N=20)
Classifier:D. Sheikh, FSU
Type spec mass (g):26.2
Type spec location:UCLA
Main mass:Verish
Finder:Robert Verish
Comments:Fieldname = ECVB09; lab ID# = V-B09; abbr. = TM 073; submitted by Daniel Sheikh
   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)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Public domain photographs:
Daniel Sheikh      

United States
     Recommended::   (39° 40' 46"N, 117° 37' 45"W)

     This is 1 of 183 approved meteorites from Nevada, United States (plus 4 unapproved names)
     This is 1 of 1924 approved meteorites from United States (plus 867 unapproved names) (plus 28 impact craters)
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