Mineralogy classified into density (often given as specific gravity); measures of mechanical cohesion (hardness, tenacity, cleavage, fracture, parting); macroscopic visual properties (luster, color, streak, luminescence, diaphaneity); magnetic and electric properties; radioactivity and solubility in hydrogen chloride (). "Hardness" is determined by comparison with other minerals. In the Mohs scale, a standard set of minerals are numbered in order of increasing hardness from 1 (talc) to 10 (diamond). A harder mineral will scratch a softer, so an unknown mineral can be placed in this scale by which minerals it scratches and which scratch it. A few minerals such as calcite and kyanite
American College of Mohs Surgery College of Mohs Surgery offers professional recognition to physicians proficient in Mohs surgery. The ACMS also offers opportunities for continuing education, as well as an annual meeting with speakers and industry exhibitors. The ACMS aims to "improve the clinical and aesthetic outcomes of Mohs surgery" by requiring physicians to undergo a rigorous fellowship training process as well as ongoing education. The ACMS also allows patients to access information and locate credentialed physicians throughout the United States. 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