Unmatter is formed by matter and antimatter that bind together.
The building blocks (most elementary particles known today) are 6 quarks and 6 leptons;
their 12 antiparticles also exist.
Then unmatter will be formed by at least a building block and at least an antibuilding block which can bind together.
Unmatter is connected with unparticle.
Unparticles are mixed states that contain arbitrary mixtures of particles and antiparticles, hence connection with unmatter. The use of the fractal operators of differentiation and integration leads to the connection between unparticle and unmatter.
Florentin Smarandache has coined the notion of “unmatter” and related concepts such as “unparticle,” “unatom,” “unmolecule” in a manuscript from 1980 according to the CERN web site, and he uploaded articles about unmatter starting with year 2004 to the CERN site and published them in various journals in 2004, 2005, 2006.