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Ocate
Basic information Name: Ocate
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1986
Country: United States
Mass:help 6.4 kg
Classification
  history:
Meteoritical Bulletin:  MB 96  (2009)  Iron IAB
Recommended:  Iron, IAB-MG    [explanation]

This is 1 of 113 approved meteorites classified as Iron, IAB-MG.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 22 May 2009
Writeuphelp
Writeup from MB 96:

Ocate                                                                                      36° 17.72' N, 105° 2.90' W

Mora County, New Mexico

Find: 1986

Iron (IAB-MG), coarse octahedrite

History:  This single 6.4 kg mass was found by a local New Mexico hunter in 1986.  Knowing it was different from the surrounding rocks and had an odd appearance (the face of a bear), the hunter took it home and set it aside with an odd assortment of 'collectibles' while hunting and mountaineering over decades in the New Mexico area.  The owner contacted G. Hupe in May 2008 for verification of the find, which was confirmed by study of the type sample at the University of Alberta.

Physical characteristics:  A single stone weighing 6402 grams with virtually no apparent fusion crust, yet also lacking progressed terrestrial alteration, which contributes towards its dark brown metallic appearance with well defined regmaglypts.

Petrography: (C. Herd, N. Bruemmer, UAb) A 5 x 7 cm polished and etched slab reveals Widmanstätten pattern with an average bandwidth of 1.4 ± 0.2 mm, few areas of plessite, and numerous inclusions.  A 1 cm ellipsoidal graphite nodule and several smaller inclusions of graphite, troilite and schreibersite are associated with polygonal kamacite on one portion of the slab. Smaller, mm-scale elongate inclusions of troilite are oriented parallel to kamacite lamellae where the Widmanstätten is better developed. Terrestrial oxides decorate fractures within a few mm of the exterior surface.

Geochemistry: Bulk Composition: INAA data (J. Duke, UAb): Ni = 6.99 ± 0.05 wt%, Co = 0.466 ± 0.004 wt%, Ga = 71.9 ± 0.3 μg/g, Ge = 271 ± 6 μg/g, Ir = 2.25 ± 0.04 μg/g, Au = 1.60 ± 0.03 μg/g, As = 15.2 ± 0.3 μg/g, Cu = 119 ± 11 μg/g, W = 0.87 ± 0.08 μg/g, Re = 0.22 ± 0.02 μg/g (uncertainties 1s, 68% confidence level).

Classification: Iron meteorite, IAB main group, coarse octahedrite, minimal shock, minimal weathering.

Type specimens: 97.58 g slab and a 3.2 g interior piece, UAb, main mass, G. Hupe.

Data from:
  MB96
  Table 3
  Line 4:
State/Prov/County:Mora County, New Mexico
Date:1986
Latitude:36°17.72'N
Longitude:105°2.90'W
Mass (g):6400
Pieces:1
Class:Iron IAB
Classifier:C. Herd, N. Bruemmer, Uab
Type spec mass (g):100.78
Type spec location:Uab
Main mass:GHupé
Institutions
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 96, MAPS 44, 1355-1397 (2009)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Alberto Giusta   
Gerald Armstrong   
MeteoriteCollector.org - FCOM - Russ Finney      
Mirko Graul      
Steve Witt   
Geography:

United States
Coordinates:
     Recommended::   (36° 17' 43"N, 105° 2' 54"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 1835 approved meteorites from United States (plus 358 unapproved names) (plus 28 impact craters)
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