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Wisconsin Range 91627
Basic information Name: Wisconsin Range 91627
     This is an OFFICIAL meteorite name.
Abbreviation: WIS 91627
Observed fall: No
Year found: 1991
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 107 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 16(1)  (1993)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.7
NHM Catalogue:  5th Edition  (2000)  H3.7
MetBase:  v. 7.1  (2006)  H3.8
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  H3.8
Recommended:  H3.8    [explanation]

This is 1 of 78 approved meteorites classified as H3.8.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 16(1):

Sample No.: WIS91627

Location: Wisconsin Range

Dimensions (cm): 5.0 x 4.2 x 3.0

Weight (g): 107.0 Meteorite

Type: H3 Chondrite

 

Macroscopic Description: Cecilia Satterwhite Oxidation haloes are present in the black fusion crust which covers 75% of WIS91627. Light gray and white inclusions/chondrules are visible in the mostly brown colored interior. Metal is obvious.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.2 mm across, in a granular matrix consisting largely of olivine and pyroxene, with a moderate amount of nickel-iron and minor troilite. Some weathering is indicated by brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa8-26, mean Fa18 (CV FeO is 28); pyroxene, Fs2-22. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron H group, hence the meteorite is classified as an H3 chondrite (estimate H3.7).

 

Data from:
  MB76
  Table 2
  Line 5536:
Origin or pseudonym:East Spear
Mass (g):107
Class:H3.7
Weathering grade:B/C
Fayalite (mol%):8-26
Ferrosilite (mol%):2-22
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 16(1) (1993), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 45'S, 125° 0'W)
     Recommended::   (86° 30' 35"S, 122° 57' 44"W)
Note: the NHM and MetBase coordinates are 197.3 km apart

Statistics:
     This is 1 of 40849 approved meteorites from Antarctica (plus 4494 unapproved names)
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