Meteoritical Bulletin: Entry for Black Rock 003

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Black Rock 003

Basic information

Name: Black Rock 003
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2003
Country: United States
Mass: 25.1 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	H3
Recommended:			H3 [explanation]

This is 1 of 710 approved meteorites (plus 2 unapproved names) classified as H3. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 12 Apr 2019

Writeup

Writeup from MB 108:

Black Rock 003 40°58.266’N, 119°02.134’W

Nevada, United States

Find: 2003 Oct 25

Classification: Ordinary chondrite (H3)

History: This stone was recovered by Robert Verish along the eroded margin of a dry lake.

Physical characteristics: This 25.1 g chondritic stone is a dark-brown, weathered fragment with only one side that is a relict-exterior surface, and is lacking fusion-crust.

Petrography: (Daniel Sheikh, FSU) Composed of small to medium-sized chondrules (average ~0.35 mm) in a fine-grained matrix.

Geochemistry: Olivine, Fa_18.55±5.3(Fa_11.36-26.16, N=25); orthopyroxene, Fs_12.75±3.8Wo_1.75±0.3(Fs_7.24-17.81Wo_1.23-2.62, N=25).

Classification: Ordinary Chondrite (H3.8) Estimated subtype H3.8 due to Fa s.d.=5.3 and Fs s.d.=3.8 from Huss et al. (2004).

Specimens: 7.82 grams at UCLA; main mass with Verish.

Data from:
  MB108
  Table 0
  Line 0:

State/Prov/County:	Nevada
Origin or pseudonym:	dry lake
Date:	2003 Oct 25
Latitude:	40°58.266'N
Longitude:	119°02.134'W
Mass (g):	25.1
Pieces:	1
Class:	H3
Shock stage:	S4
Weathering grade:	W3
Fayalite (mol%):	18.55±5.3 (11.36-26.16, N=25)
Ferrosilite (mol%):	12.75±3.8 (7.24-17.81, N=25)
Wollastonite (mol%):	1.75±0.3 (1.23-2.62, N=25)
Classifier:	D. Sheikh, FSU
Type spec mass (g):	7.82
Type spec location:	UCLA
Main mass:	Verish
Finder:	Robert Verish
Comments:	Fieldname = UU031025B; lab ID# = V-BR-3; submitted by Daniel Sheikh

Institutions
and collections

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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

United States

Coordinates:
Recommended::	(40° 58' 16"N, 119° 2' 8"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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