Characteristics of Anthracite:

Chemical Name: Anthracite

Formula:  C₂₄₀H₉₀O₄NS

Colors: Metallic black

Structure: Amorphous

Hardness: 2.75-3

Specific Gravity: 1.4

Refractive Index: 1.64-1.68

Lustre: Sub-metallic

Locations: Russia, Ukraine, North Korea, South Africa, Vietnam, UK, Australia, USA

What is Anthracite? 

Anthracite is the purest, most carbonized type of coal, consisting almost entirely of carbon. Like bituminous coal, it is composed of organic matter, but is older and much more highly compressed, and does not leave behind any residue when touched. It is used in beads and carvings, although its main use is as a fuel – though difficult to ignite, once lit it produces a lot of heat and burns slowly. Anthracite fires combust with a small blue flame that is smokeless, making it a good fuel for indoor used, but is expense means it is less widely used on an industrial level.