Korra Korrabes

(H3) Brecciated

Found Nov. 1996

Namaland, Namibia

  

 

 

There has been some discussion of late about both Korra Korrabes and how much one should finish off a meteorite slice to best show the detail. It happens that KK is the perfect meteorite for the later discussion. When finished to a polish as in the first photograph above there are visible chondrules but they are hard to see and there are not many. When a slice of KK is smoothed on a diamond lap and left unpolished, a world of wonderful chondrules appears and one can easily see why it is classified as an H3. It is packed with small chondrules many are a pretty blue gray but there are several other colors represented as well. These two pieces seemed to display similar character, KK is reported to be brecciated. None of my pieces show much brecciation. It is a surprisingly attractive meteorite when cut considering the degree of weathering that it often shows on the outside.

All meteorites require care in preparation. However some are done an injustice by polishing. A smooth parallel slice that shows the characteristics of the meteorite is always preferable to polishing to a high sheen just because the stone will take a polish. On some meteorites high polish is required, on others it is not. You can always bring the surface back down to a detail enhancing grit if polishing has reduced the visibility of details. I did not prepare the top picture, it is as I purchased it. The second is a slice I did on diamond laps. KK is often crisscrossed with fractures, so some care also needs to be used to keep from having your slice fragment into many smaller slices. I was going to write on cutting and preparing meteorites this month, but time did not allow for that. Maybe this will serve as a short primer to that future article.