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Huntsman (b)
Basic information Name: Huntsman (b)
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1977
Country: United States
Mass:help 10.22 kg
Classification
  history:
Recommended:  H3    [explanation]

This is 1 of 617 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 18 Jan 2020
Writeuphelp
Writeup from MB 109:

Huntsman (b)        41°13.498’N, 103°1.595’W

Nebraska, United States

Find: 1977

Classification: Ordinary chondrite (H3)

History: 10.215 kg found in 1977 on the Spiker family farm near Huntsman, Nebraska. Sample was initially screened and passed on for classification by New England Meteoritical Services (NEMS).

Physical characteristics: Physical Characteristics: Single stone, weathered dark-brown exterior with sparse minor patches of weathered fusion crust. Saw cut reveals dark interior with scattered chondrules, numerous bright grains of iron-nickel metal and sulfide, and a small darker inclusion lacking metal or sulfide grains.

Petrography: (K. Domanik and F. Stephan, UAz) Microprobe examination of a polished mount shows numerous recognizable chondrules averaging ~500 μm in diameter set in a fragmental matrix. Silicate compositions of both chondrules and matrix are highly variable. Secondary plagioclase is minor to absent. Kamacite grains, 200-400 μm in size constitute ~10 vol% of the meteorite and are associated with lesser amounts of troilite and Ni-rich taenite. The sample examined contains several small, recrystallized shock veins as well as a 9 × 3 mm melt area containing zoned euhedral to subhedral olivine crystals set in a matrix of isotropic glass. Minor merrillite and silica were also observed.

Geochemistry: Mineral compositions and geochemistry: (K. Domanik and F. Stephan, UAz) Olivine Fa16.9±5.6, range Fa0.6-33.0, PMD-FeO 20.8%, Fe/Mn=39.3±7.7, n=112; low-Ca pyroxene Fs11.3±6.4Wo0.9±0.6, range Fs1.6-30.6, PMD-FeO 44.7, Fe/Mn=20.3±7.1, n=48. Kamacite Fe=92.9±0.9, Ni=6.1±0.9, Co=0.5±0.1 (wt%), n=24.

Classification: Ordinary Chondrite (H3), consistent with type 3.6 based on PMD-FeO of olivine and low-Ca pyroxene, sigma Fa vs. average Fa content of olivine, and low Co heterogeneity in kamacite. Found 5.2 km NW of Huntsman [which now gets the synonym Huntsman (a)] and maybe potentially paired with it given the proximity. Although Huntsman (a) is classified as H4, data for Fa and Fs variability are currently lacking for this specimen.

Specimens: 48.1 g, two probe mounts and a thin section on deposit at UAz, Jerry Spiker holds the main mass.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Nebraska
Date:1977
Latitude:41°13.498'N
Longitude:103°1.595'W
Mass (g):10215
Pieces:1
Class:H3
Shock stage:S5
Weathering grade:W1
Fayalite (mol%):16.9±5.6 (N=112)
Ferrosilite (mol%):11.3±6.4 (N=48)
Wollastonite (mol%):0.9±0.6 (N=48)
Classifier:K. Domanik and F. Stephan, UAz
Type spec mass (g):48.1
Type spec location:UAz
Main mass:Jerry Spiker
Finder:Harold L. Spiker
Comments:Jerry Spiker (holder) contact information: New England Meteoritical Services, P.O. Box 440, Mendon, MA 01756.; submitted by K. Domanik
Institutions
   and collections
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

United States
Coordinates:
     Recommended::   (41° 13' 30"N, 103° 1' 36"W)

Statistics:
     This is 1 of 50 approved meteorites from Nebraska, United States
     This is 1 of 1861 approved meteorites from United States (plus 890 unapproved names) (plus 28 impact craters)
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