24th February 2017 - Sol 1620

Posted by jcb36 at Feb 24, 2017 08:39 PM |
24th February 2017 - Sol 1620

A Dreikanter on Mars

We have been examining Ireson Hill and found this unusual 10-15 cm diameter rock- called Passagassawakakeag !

The shape is an almost perfect Dreikanter.  That's a German word  for a sample in desert or periglacial environments formed by the abrasion of blown sand. Dreikanters typically have a pyramid shape with flat wind-abraded facets.


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