  Cement mineral tobermorite was formed in hydrothermal experiments on
alternation of calcium-aluminum-rich inclusions (CAIs) in carbonaceous
chondrite meteorites. Unidentified bands at 14 microns were measured for CAIs
and the matrix of the Allende meteorite sample, as well as for Hektor and
Agamemnon asteroids. The presence of cement nanoparticles may explain the
feature at 14 microns.
