The Northwest Africa (NWA) 14139 Meteorite.
Steve Jurvetson from Los Altos, USA, CC BY 2.0, via Wikimedia Commons or Flickr: https://flic.kr/p/2nEkaV6
NWA 14139 C3-Ungrouped (proposed CT3) Carbonaceous Chondrite
This whole stone is potentially a CT3 as it is a pristine member of the proposed CT Group. Here is the proposal to form a new CT Group and discussion.Flickr