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Morrow County
Basic information Name: Morrow County
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1999
Country: United States
Mass:help 18.2 kg
Classification
  history:
Meteoritical Bulletin:  MB 98  (2010)  L6
Recommended:  L6    [explanation]

This is 1 of 13171 approved meteorites (plus 11 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 4 May 2010
Writeuphelp
Writeup from MB 107:
The main mass of Morrow County is now deposited at RiceNW. See uploaded photograph.
Data from:
  MB98
  Table 1
  Line 268:
State/Prov/County:Oregon
Origin or pseudonym:farmland atop dissected basalt plateau
Date:1999
Latitude:45.5±0.5°N
Longitude:119.5±0.5°W
Mass (g):18200
Pieces:1
Class:L6
Shock stage:S5
Weathering grade:W1
Fayalite (mol%):24.5±0.4
Ferrosilite (mol%):20.4 ±0.1
Classifier:M. Hutson, A.Ruzicka, R. Pugh, Cascadia
Type spec mass (g):25.4
Type spec location:Cascadia
Main mass:D. E. Wesson
Finder:Donald E. Wesson
Comments:Oriented specimen. Coordinates are approximate for center of the county. The specific find coordinates are not known.; submitted by A. Ruzicka
Institutions
   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)
RiceNW: Rice Northwest Museum of Rocks and Minerals 26385 NW Groveland Drive Hillsboro, OR 97124, United States (institutional address; updated 2 Dec 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Julian Gray, RiceNW Museum   
Geography:

United States
Coordinates:
     Recommended::   (45° 30'N, 119° 30'W)

Statistics:
     This is 1 of 6 approved meteorites from Oregon, United States (plus 2 unapproved names)
     This is 1 of 1935 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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