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Stewart Valley 025
Basic information Name: Stewart Valley 025
     This is an OFFICIAL meteorite name.
Abbreviation: StV 025
Observed fall: No
Year found: 2022
Country: United States
Mass:help 13.7 g
Meteoritical Bulletin:  MB 112  (2024)  H5
Recommended:  H5    [explanation]

This is 1 of 11988 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 3 Jan 2024
Writeup from MB 112:

Stewart Valley 025 (StV 025)        36°13.829’ N, 116°9.819’ W

Nevada, United States

Find: 2022 April 03

Classification: Ordinary chondrite (H5)

History: Found on a small drylake in Stewart Valley, (Nevada-side) by Anton Clemens and Robert Verish.

Physical characteristics: A single (13.7 g) round, gray-brown, 70% fusion-crusted stone.

Petrography: (D. Sheikh, Cascadia) Equilibrated ordinary chondrite containing secondary recrystallized feldspar (~20 μm) and accessory Fe-Ni metal and troilite.

Geochemistry: Olivine (Fa18.7±0.2, range Fa18.3-19.2, n=16); Low-Ca Pyroxene (Fs16.8±0.2Wo1.4±0.2, range Fs16.4-17.3Wo1.1-1.8, n=24).

Classification: Ordinary chondrite (H5).

Specimens: A type-specimen of 2.7 g of material and one polished thin sections are on deposit at UCLA. The remaining mass is held by Mr. R. Verish [Verish].

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Drylake
Date:2022 April 03
Latitude:36°13.829' N
Longitude:116°9.819' W
Mass (g):13.7
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):18.7±0.2
Ferrosilite (mol%):16.8±0.2
Wollastonite (mol%):1.4±0.2
Classifier:D. Sheikh, Cascadia
Type spec mass (g):2.7
Type spec location:UCLA
Main mass:Verish
Finder:Anton Clemens and Robert Verish
Comments:Field ID: N220403A - Thin-section ID: V-StV-Anton; submitted by Daniel Sheikh
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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United States
     Recommended::   (36° 13' 50"N, 116° 9' 49"W)

     This is 1 of 184 approved meteorites from Nevada, United States (plus 4 unapproved names)
     This is 1 of 1930 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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