Abstract: Carbon microfibers were synthesized by chemical vapor deposition during the decomposition of turpentine oil in the presence of nickel sulfate as a catalyst precursor on a graphite host. The fibers were separated from graphite and metal impurities by acid treatment, followed by several washes with deionized water. These fibers have a diameter of approximately 3-5μm and they were studied by optical and scanning electron microscopy. A sponge-like morphology of the microfibers due to self-assembly was observed.