Minimonolith

The Minimonolith, or minilith (appearing as a chapter in 2061), appears to Heywood Floyd aboard the Universe flight to Europa, during the events in Arthur C. Clarke's 2061: Odyssey Three.

2061: Odyssey Three
The minilith "echoed" Floyd's mind into a metaphysical form like that of David Bowman and HAL 9000, however, his physical body was left intact and conscious to complete the mission.