English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

The mineralogy and physical properties of Chelyabinsk meteorites (fall,February 15, 2013) are presented. Three types of meteorite material arepresent, described as the light-colored, dark-colored, and impact-meltlithologies. All are of LL5 composition with the impact-melt lithology beingclose to whole-rock melt and the dark-colored lithology being shock-darkeneddue to partial melting of iron metal and sulfides. This enables us to study theeffect of increasing shock on material with identical composition and origin.Based on the magnetic susceptibility, the Chelyabinsk meteorites are richer inmetallic iron as compared to other LL chondrites. The measured bulk and graindensities and the porosity closely resemble other LL chondrites. Shockdarkening does not have a significant effect on the material physicalproperties, but causes a decrease of reflectance and decrease in silicateabsorption bands in the reflectance spectra. This is similar to the spaceweathering effects observed on asteroids. However, compared to space weatheredmaterials, there is a negligible to minor slope change observed in impact-meltand shock-darkened meteorite spectra. Thus, it is possible that some darkasteroids with invisible silicate absorption bands may be composed ofrelatively fresh shock-darkened chondritic material.

Mineralogy, reflectance spectra, and physical properties of the Chelyabinsk LL5 chondrite, insight into shock induced changes in asteroid regoliths