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Black Butte 002
Basic information Name: Black Butte 002
     This is an OFFICIAL meteorite name.
Abbreviation: BB 002
Observed fall: No
Year found: 2015
Country: United States
Mass:help 9.9 g
Classification
  history:
Recommended:  H3-4    [explanation]

This is 1 of 20 approved meteorites classified as H3-4.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 31 Jan 2020
Writeuphelp
Writeup from MB 109:

Black Butte 002 (BB 002)        41°24.207’N, 118°13.478’W

Nevada, United States

Find: 2015 Aug 9

Classification: Ordinary chondrite (H3-4)

History: While searching for meteorites, Robert Verish recovered this stone along the apron of a hummock which formed a west-facing stranding-surface.

Physical characteristics: This 9.9 g well-rounded, orangish-brown whole-stone has a rough, fusion-crusted exterior, and a cut surface reveals visible chondrules, metal-grains and troilite in a light-brown groundmass.

Petrography: (D. Sheikh, FSU) Sample contains well-defined chondrules (Av. 600 μm) along with metal and troilite. Both unequilibrated and equilibrated clasts present.

Geochemistry: Olivine in type 3 clasts (Fa17.4-26.1, n=10), Low-Ca Pyroxene in type 3 clasts (Fs15.4-25.6Wo1.0-1.8, n=8), Olivine in type 4 clasts (Fa19.1±0.9, n=12), Low-Ca Pyroxene in type 4 clasts (Fs16.8±0.8Wo1.4±0.3, n=10).

Classification: Ordinary Chondrite (H3-4). The sample contains both unequilibrated (type 3) and equilibrated (type 4) clasts.

Specimens: 2.2 grams at UCLA; main mass with Verish.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Nevada
Origin or pseudonym:drylake
Date:2015 Aug 9
Latitude:41°24.207'N
Longitude:118°13.478'W
Mass (g):9.9
Pieces:1
Class:H3-4
Shock stage:S2
Weathering grade:W3
Classifier:D. Sheikh, FSU
Type spec mass (g):2.2
Type spec location:UCLA
Main mass:Verish
Finder:Robert Verish
Comments:Fieldname = N150809; lab ID# = V-BB02; 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. 109, in preparation (2020)
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Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh   
Geography:

United States
Coordinates:
     Recommended::   (41° 24' 12"N, 118° 13' 29"W)

Statistics:
     This is 1 of 181 approved meteorites from Nevada, United States (plus 4 unapproved names)
     This is 1 of 1919 approved meteorites from United States (plus 867 unapproved names) (plus 28 impact craters)
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