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Ulmiz
Basic information Name: Ulmiz
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 1926
Country: Switzerland
Mass:help 76.5 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  L
MetBase:  v. 7.1  (2006)  L
Recommended:  H3-6    [explanation]

This is 1 of 80 approved meteorites classified as H3-6.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Revised 23 Jan 2024: reclassified
Writeuphelp
Writeup from MB 113:

Ulmiz, reclassification

Petrography: (B. Hofmann, Bern): Chondritic texture, brecciated. In thin section, material of petrographic type 4, with extremely fine-grained, recrystallized chondrule mesostasis, is common. There are several chondrules and clasts with isotropic brown glass, showing the presence of petrographic type 3 material. Feldspar size is bimodal with main abundances at 10-20 μm and 50-80 μm. Mean chondrule size is 0.43±0.21 mm (n=108).

Geochemistry: Olivine Fa17.6±0.6 (N=20, range Fa16.6-18.8), Fa by XRD 18.0; pyroxene: Fs16.1±0.5Wo1.2±0.3 (range Fs14.3-17.3Wo0.8-1.6, N=27).

Classification: Umiz was recognized as H chondrite during a magnetic suceptibility measurement and confirmed by mineral analysis. Reclassification as H chondrite breccia based on magnetic susceptibility, mineral composition and mean chondrule size. Petrographic type 3-6 (breccia) based on presence of brown glass in some chondrules, a range of feldspar size up to 80 μm, and brecciated texture. Shock stage S2. Weathering grade W0.

Institutions
   and collections
Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 113, in preparation (2024)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Museum, Freiburg   
Geography:

Switzerland
Coordinates:
     Catalogue of Meteorites:   (46° 56'N, 7° 13'E)
     Recommended::   (46° 56'N, 7° 13'E)

Statistics:
     This is 1 of 3 approved meteorites from Fribourg, Switzerland
     This is 1 of 12 approved meteorites from Switzerland (plus 3 unapproved names)
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