Talc Talc Talc or talcum is a clay mineral composed of hydrated magnesium silicate with the chemical formula HMg(SiO) or MgSiO(OH). In loose form, it is (in ratio with or without corn starch) one of the most widely used substances known as baby powder. It occurs as foliated to fibrous masses, and in an exceptionally rare crystal form. It has a perfect basal cleavage, and the folia are not elastic, although slightly flexible. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 1 as the hardness of talc. Talc can easily be scratched by a fingernail. Talc
American College of Mohs Surgery American College of Mohs Surgery The American College of Mohs Surgery (abbreviated as ACMS) is a membership-based organization of surgeons who are fellowship-trained in Mohs surgery, a technique that removes skin cancer in stages, one tissue layer at a time. Its president for 2015-16 is John G. Albertini. The ACMS is both the oldest and largest professional membership organization for Mohs surgeons. The American College of Mohs Surgery was established in 1967 by Frederic E. Mohs, a general surgeon based at the University of Wisconsin – Madison. In addition to founding the College, Mohs also served as its first president.