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
Burns Bog salmon-bearing creeks. Burns Bog is also a major carbon sink. Since organic matter decomposes at a very slow rate in the bog, carbon stays in the bog. High acidity and the waterlogged conditions of peatlands such as Burns Bog prevent complete decomposition of fixed carbon. This prevents the carbon from escaping into the atmosphere. European scientists state that an area of peatland the size of a soccer field stores as much carbon as driving a family car around the world three times. Burns Bog was formed at the end of the last ice age, which was 10,000 years ago. At