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Mangum
Basic information Name: Mangum
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2008
Country: United States
Mass:help 750 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H4
Recommended:  H4    [explanation]

This is 1 of 5317 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Mar 2012
Writeuphelp
Writeup from MB 100:

Mangum        34.849°N, 99.704°W

Greer County, Oklahoma, USA

Found: 2008

Classification: Ordinary chondrite (H4)

History: Found by Mr. Ray Chambless in 2008 while he was mowing his yard, but only recognized as a possible meteorite in 2011 September, after he viewed a television show on meteorites. The find location was about 11.5 miles ESE of Mangum in Greer County, Oklahoma.

Physical characteristics: A single, large brownish stone weighing 750 g and partially covered with weathered fusion crust.

Petrography: (A. Irving and S. Kuehner, UWS) The specimen consists of small, well-formed chondrules in a finer grained matrix rich in stained metal. Primary minerals are olivine, low- and high-Ca pyroxene, sodic plagioclase, chromite, troilite and kamacite (partially altered to iron hydroxides).

Geochemistry: Olivine Fa18.2, orthopyroxene Fs16.0-16.1Wo0.9-1.0, clinopyroxene Fs5.8-5.9Wo47.5-43.0.

Classification: Ordinary chondrite (H4)

Specimens: 23.9 g and one polished thin section are on deposit at UWS. The main mass is held by Mr. R. Chambless of Mangum, OK.

Data from:
  MB100
  Table 1
  Line 569:
State/Prov/County:Oklahoma
Date:2008
Latitude:34.849°N
Longitude:99.704°W
Mass (g):750
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):18.2±0.0
Ferrosilite (mol%):16.0-16.1
Wollastonite (mol%):0.9-1.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.9
Type spec location:UWS
Main mass:R. Chambless
Finder:R. Chambless
Comments:Submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
David L. Ribeca   
Michael S. Scherman   
Geography:

United States
Coordinates:
     Recommended::   (34° 50' 56"N, 99° 42' 14"W)

Statistics:
     This is 1 of 40 approved meteorites from Oklahoma, United States (plus 2 unapproved names) (plus 1 impact crater)
     This is 1 of 1784 approved meteorites from United States (plus 352 unapproved names) (plus 28 impact craters)
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