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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
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 6879 approved meteorites (plus 6 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
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.

Plots: O isotopes:  
   and collections
FMNH: NW Quadrant/Geology The Field Museum of Natural History 1400 South Lake Shore Drive Chicago, IL 60605-2496, USA, United States; Website (institutional address; updated 22 May 2024)
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)
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 from the Encyclopedia of Meteorites:
Photograph by Geoffrey Notkin © Oscar E. Monnig Meteorite Gallery   
Sonny Clary   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
David L. Ribeca   
Denis gourgues         
Gerald Armstrong   
Gregor H.   
harlan trammell   
Jay Piatek   
Jia He Zhang   
Jim Strope            
John Creech, Victoria University of Wellington   
KD Meteorites   
Krzysztof Nowak   
Luis Alexandre Franco Gonçales   
Matteo Chinellato   
Michael S. Scherman   
Robert Zdancewicz   
The Wilcox Collection of Meteorites      
Woreczko Jan & Wadi      
Zsolt Kereszty   

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

     This is 1 of 228 approved meteorites from New Mexico, United States (plus 2 unapproved names) (plus 1 impact crater)
     This is 1 of 1929 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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