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
Mohs surgery 2004 and 2014. In a sample of 100 Mohs surgeries, the cost ranged from US$474 to USUS$7,594, with the higher costs for hospital-based physicians. In 2010, hospital-based dermatologists who did Mohs surgery were paid US$586,083, according to Becker's Hospital Review. When the surgery is performed in different steps by different specialists, each specialist can bill for his or her own procedure, such as the surgery itself, closing the wound, anesthesiology, and facilities fees. This can total more than US$25,000 for a single procedure. Originally, Mohs used a chemical paste (an escharotic agent) to cauterize and kill the tissue. It was