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Tungsten Mountain 056
Basic information Name: Tungsten Mountain 056
     This is an OFFICIAL meteorite name.
Abbreviation: TM 056
Observed fall: No
Year found: 2001
Country: United States
Mass:help 28.8 g
Meteoritical Bulletin:  MB 109  (2020)  H5
Recommended:  H5    [explanation]

This is 1 of 11566 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 from MB 109:

Tungsten Mountain 056 (TM 056)        39°41.3442’N, 117°37.1896’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 28.8 g stony fragment, flat-oval shape (45 × 30 × 10 mm) having dark-brown, hackly exterior with some black patina, and one tiny patch of relict fusion-crust. Basically, a typical-looking fragment of a H-chondrite from this this dry-lake in Edwards Creek Valley.

Petrography: (D. Sheikh, FSU) Low chondrule abundance (300-1200 µm, n=7). Sample is composed of olivine, low-ca pyroxene, recrystallized plagioclase (average size 5±1 µm), troilite, Fe-Ni metal, Fe-oxides, and chromite.

Geochemistry: Olivine (Fa18.7±0.9, n=19), Low-Ca Pyroxene (Fs16.7±0.7Wo1.4±0.2, n=20).

Classification: Ordinary Chondrite (H5)

Specimens: 27.9 g at UCLA; main mass with Verish.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:drylake
Date:4 Aug 2001
Mass (g):28.8
Shock stage:S3
Weathering grade:W4
Fayalite (mol%):18.7±0.9 (N=19)
Ferrosilite (mol%):16.7±0.7 (N=20)
Wollastonite (mol%):1.4±0.2 (N=20)
Classifier:D. Sheikh, FSU
Type spec mass (g):27.9
Type spec location:UCLA
Main mass:Verish
Finder:Robert Verish
Comments:Fieldname = ECVB03; lab ID# = V-B03; abbr. = TM 056; 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° 41' 21"N, 117° 37' 11"W)

     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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