HUT 18030

Classification: Ordinary Chondrite L4

Explainer: This means that the sample is from an asteroid parent body. It represents early Solar System material which includes chondrules (small round melt droplets). It is from a very common type of chondrule-bearing meteorite called the ordinary chondrite class. This particular type is an ‘L’ type – meaning it has low concentrations of iron (i.e. iron metal). The meteorite is also a type 4 sample – which means that it has been metamorphosed (heated and/or held under high pressure) to a minimal extent. You can see more about where this sample fits into the meteorite classification scheme by looking at this page.

Description: Taken from the Meteoritical Bulletin for HUT 18030

History: The meteorite was recovered as part of the Lost Meteorites of Antarctica project, which was funded in the UK by the Leverhulme Trust and supported by the British Antarctic Survey and the University of Manchester. These samples were collected as part of the project’s first field season in austral summer December 2018 – January 2019 by a two person field party consisting of Katherine Joy and Julie Baum. Found on blue ice surface. Altitude 1267 m.

Physical characteristics: Mass: 33.91 g. Pieces: 1. Dimensions: 5 × 4 × 3 cm. A round, whole light-gray stone with 98% black fusion crust.

Petrography: Well-defined chondrules (up to 1 mm in diameter), chondrule fragments and mineral grains in a coarse-grained matrix. Metal and sulfide grains up to 0.8 mm throughout.

Mineral compositions and geochemistry: Mineral compositions and geochemistry: All analyses by EPMA. Olivine Fa25.4±0.5 (N=11), Pyroxene Fs22.3±1.9Wo1.7±0.2 (N=12). Plagioclase An11.6Ab84.2Or4.2 (N=1).

Specimens: 33.30 g type specimen (main mass) held at the NHM

Project comments: 

Sample images and videos:

HUT 18030 sample in the field on blue ice. Photo was taken when it was very windy and snow was blowing, hence all the small snow particles blowing past. Image: Lost Meteorites of Antarctica / The University of Manchester
HUT 18030 sample in the lab after defrosting. Image: Lost Meteorites of Antarctica / The University of Manchester
HUT 18030 sample in the lab after defrosting. Image: Lost Meteorites of Antarctica / The University of Manchester