Uasara, IIAB

Meteoritical Bulletin entry for Uasara. Screen Shot 2013-12-21 at 7.24.28 AMI have only a few things to add to the above description; Sierra Gorda and Negrillos are both described as being heavily weathered in Vagn F. Buchwald’s Handbook of Iron Meteorites.  The “ragged” surface noted in the description as evidence of weathering is a late fracture covered with frothy fusion crust (see images).  So, this isn’t paired.

In fact, given the pristine condition of the meteorite, I see little reason to doubt the finder’s story; Uasara is likely a witnessed fall.  This iron is featured on page 64 of the Field Guide to Meteors and Meteorites, by O. Richard Norton & Lawrence A. Chitwood.  It is a remarkable example of an oriented meteorite.

I took a number of images and most of them turned out alright; I didn’t see the harm in posting them.  Enjoy! DSCN4930 DSCN4931 DSCN4932 DSCN4935 DSCN4938 DSCN4939 DSCN4940 DSCN4941 DSCN4942 DSCN4944 DSCN4945 DSCN4946 DSCN4947 DSCN4949 DSCN4951 DSCN4954 DSCN4956 DSCN4957 DSCN4958 DSCN4959 DSCN4961 DSCN4962