Anthracite Mohs scale), its higher relative density of 1.3–1.4, and luster, which is often semi-metallic with a mildly brown reflection. It contains a high percentage of fixed carbon and a low percentage of volatile matter. It is also free from included soft or fibrous notches and does not soil the fingers when rubbed. Anthracitization is the transformation of bituminous coal into anthracite. The moisture content of fresh-mined anthracite generally is less than 15 percent. The heat content of anthracite ranges from 22 to 28 million Btu per short ton (26 to 33 MJ/kg) on a moist, mineral-matter-free basis. The heat content
Chinese given name in Mao Tse-tung was the fourteenth generation of such a cycle, but he chose to ignore his family's generational poem to name his own sons. A similar practice was observed regarding the stage names of Chinese opera performers: all the students entering a training academy in the same year would adopt the same first character in their new "given name". For example, as part of the class entering the National Drama School in 1933, Li Yuru adopted a name with the central character "jade" (). There are also other conventions. It is frequently the case that children are given names