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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
Meteoritical Bulletin:  MB 109  (2021)  H3
Recommended:  H3    [explanation]

This is 1 of 716 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
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:
  Table 0
  Line 0:
Mass (g):10215
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
   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)
References: Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
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United States
     Recommended::   (41° 13' 30"N, 103° 1' 36"W)

     This is 1 of 50 approved meteorites from Nebraska, United States
     This is 1 of 1930 approved meteorites from United States (plus 866 unapproved names) (plus 28 impact craters)
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