INDIAN GEOGRAPHY

Detailed explanation-1: -Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.

Detailed explanation-2: -Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

Detailed explanation-3: -Anthracite is hard as it contain around 86percent carbon and few volatile impurities and moisture. It is the highest rank of coal, hardest, glossy black used primarily for residential and commercial space heating.

Detailed explanation-4: -The moisture content of fresh-mined anthracite generally is less than 15 %. It differs from bituminous coal (i) by its greater hardness (2.75-3 on the Mohs scale), (ii) its higher relative density of 1.3–1.4, and (iii) its luster, which is often semi-metallic with a mildly brown reflection.