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Portales Valley
Basic information Name: Portales Valley
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 1998
Country: United States
Mass:help 71.4 kg
Classification
  history:
Meteoritical Bulletin:  MB 83  (1999)  H6
NHM Catalogue:  5th Edition  (2000)  H6
MetBase:  v. 7.1  (2006)  H6
Recommended:  H6    [explanation]

This is 1 of 5203 approved meteorites (plus 3 unapproved names) classified as H6.   [show all]
Search for other: H chondrites (type 4-7), Ordinary chondrites (type 4-7), H chondrites, and Ordinary chondrites
Writeuphelp
Writeup from MB 83:

Portales Valley

Roosevelt County, New Mexico, USA

Fell 1998 June 13, ~07:30 MDT (~13:30 UT)

Ordinary chondrite (H6)

After detonations were heard and smoky trails seen in the sky, a shower of meteorites landed near Portales, New Mexico. 53 objects have been recovered, with a total mass of 71.4 kg. The largest pieces weighed 16.5 kg (witnessed to fall by Nelda Wallace and Fred Stafford), 17.0 kg (found by Elton Brown), and at least nine others over 1 kg. A 530 g fragment went through the roof of Gayle Newberry's barn and embedded itself in a wall, indicating a trajectory west to east. The elliptical strewn field is approximately 7.7 ´ 2 km, trending N60–65ºE, although recent reports may extend this somewhat. Mineralogy (D. A. Kring, J. D. Gleason, and D. H. Hill, UAz ): olivine, Fa19.3 ±0.4; pyroxene, Fs17.2 ±0.3 Wo1.36±0.27; kamacite contains 0.55 ± 0.03 wt% Co; compositions indicate H-chondrite affinity; olivine indicates shock stage S1, plagioclase indicates S2–S3, and abundant opaque shock veins suggest S3 or higher (discrepancies may be due to annealing).  Macroscopic description (D. A. Kring, UAz ): Some individuals are crosscut by an unusually high number of metal-rich shock veins, and some specimens are composed dominantly of metal. These metal-rich samples appear to be large single veins, or pockets of metal produced by intersecting veins. Angular chondritic clasts may have moved a few millimeters along metal-rich veins.  Etching of centimeter-sized metal areas reveals a fine Widmanstätten pattern, bandwidth = 0.02 to 0.81 mm (average 0.32 mm). The composition of kamacite in metal-rich regions is the same as metal in chondritic areas (0.56 ± 0.05 wt% Co). The source of the metal in the shock veins appears to be the H-chondrite host, which is depleted in its normal complement of metal (4.4% rather than 15–19%). Specimens: type specimen, 49 g, and thin section, UAz; 16.5 kg mass purchased by consortium including FMNH, SI, UCLA, and UNM. 17.0 kg mass with finder; much of remaining material is being sold by commercial meteorite dealers.

Institutions
   and collections
FMNH: Department of Geology The Field Museum of Natural History 1400 South Lake Shore Drive Chicago, IL 60605-2496, USA, United States; Website (institutional address; updated 16 Nov 2011)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
Search for specimens in the Smithsonian Institution collection (U.S.):   
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Search for this meteorite in the Natural History Museum collection (U.K.):   
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References: Published in Meteoritical Bulletin, no. 83, MAPS 34, A169-A186 (1999)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Photograph by Geoffrey Notkin © Oscar E. Monnig Meteorite Gallery   
Sonny Clary   
unknown   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
aerolite   
akira1988      
Darwin Collection of Meteorites   
David L. Ribeca   
Gerald Armstrong   
Gregor H.   
harlan trammell   
Jay Piatek   
Jim Strope            
John Creech, Victoria University of Wellington   
KD Meteorites   
Krzysztof Nowak   
Luis Alexandre Franco Gonçales   
Matteo Chinellato   
Michael S. Scherman   
Robert Zdancewicz   
tett   
The Wilcox Collection of Meteorites      
Woreczko Jan & Wadi      
Geography:

United States
Coordinates:
     Catalogue of Meteorites:   (34° 10' 30"N, 103° 17' 42"W)
     Recommended::   (34° 10' 30"N, 103° 17' 42"W)

Statistics:
     This is 1 of 225 approved meteorites from New Mexico, United States (plus 2 unapproved names) (plus 1 impact crater)
     This is 1 of 1783 approved meteorites from United States (plus 352 unapproved names) (plus 28 impact craters)
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