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A hard, compact variety of mineral coal, of high luster, differing from bituminous coal in containing little or no bitumen, in consequence of which it burns with a nearly non luminous flame. The purer specimens consist almost wholly of carbon. Also called glance coal and blind coal.
A hard, jet-black coal that develops from lignite and bituminous coal through metamorphism, has a carbon content of 92% to 98%, and contains little or no gas. Anthracite burns with an extremely hot, blue flame and very little smoke, but it is difficult to ignite and both difficult and dangerous to mine.
Anthracite is a type of coal that has the highest carbon content and the lowest moisture and ash content. Anthracite burns slowly and makes a good heating fuel for homes. The United States has about 7.3 billion tons of anthracite, most of which can be found in Pennsylvania.
A variety of coal with a high heat content (25-33 GJ/tonne). ASTM coal classification by rank: dry fixed carbon-at least 92% but less than 98%, dry volatile matter - 8% or less but more than 2% on a mineral free basis. Known as "hard coal."
A hard coal used in the drinking water treatment process to remove particles.
Coal which is high in carbon with a small percentage of volatile matter
The highest rank of coal, most modified from its original plant form.
This comes from the Greek word "anthrax", meaning "coal." Anthracite is commonly referred to as "hard coal." In the United States, anthracite is mined mostly in eastern Pennsylvania.
hard coal, almost pure carbon. It is used mainly for heating homes.
The highest rank of coal. By definition, a coal with a fixed carbon content of over 91% on a dry ash-free basis. Anthracite coals have a bright luster, break with a conchoidal fracture, a semi-metallic luster and are difficult to ignite. Frequently referred to by the layman as "hard coal".
The highest rank of economically usable coal with moisture content less than 15% by weight and heating value as high as 15,000 Btu per pound. It is jet black with a high luster. It is mined primarily in Pennsylvania.
a hard, black, shiny coal very high in fixed carbon and low in volatile matter, hydrogen and oxygen
A hard coal containing little volatile matter.
Coal of the highest metamorphic rank, in which fixed-carbon content is between 92% and 98%.
A hard, high-energy coal with high carbon content and little volatile matter, most commonly mined in the northeastern United States.
A rank class of coals defined as having more than 86% fixed carbon and less than 14% volatile matter on a dry, mineral-matter-free basis. The rank is divided into semianthracite, anthracite, and meta-anthracite groups on the basis of increasing fixed carbon and decreasing volatile matter.
the highest rank of coal, consisting almost entirely (92 to 98 per cent) of carbon. Anthracite coal is so hard it can be sculpted. In Nova Scotia, the highest rank of coal is Semi-anthracite.
A hard natural coal that burns slowly and gives intense heat.
A very hard coal used in water filters to remove particles.
a dense, shiny coal that has a high carbon content and little volatile matter and burns with a clean flame. Also called hard coal.
The type of coal found in Castlecomer
A hard, black lustrous coal, often referred to as hard coal. It contains a high fixed carbon and ash content and is low in volatile matter. It is the highest rank of economically usable coal. The moisture content generally is less than 15 percent. It is a non-coking coal. Anthracite contains approximately 22 to 28 million Btu per ton.
A hard, dense type of coal, that is hard to break, clean to handle, difficult to ignite, and that burns with an intense flame and with the virtual absence of smoke because it contains a high percentage of fixed carbon and a low percentage of volatile matter.
The hardest, most organically mature coal, having the highest carbon content and lowest water content
A hard, black coal containing a high percentage of fixed carbon and a low percentage of volatile matter.
Coal which is commonly called “hard coal” and contains a high percent of carbon. Anthracite is mined mostly in Eastern Pennsylvania.
Type of coal with highest carbon content (86% to 98%) and thus highest heat value (nearly 15,000 BTUs-per-pound); found mostly in 11 northeastern counties in Pennsylvania
a hard, shiny, black type of coal that burns without much smoke
A filter medium produced from crushed anthracite coal and screened to specific mesh sizes.
Shiny black, compact, hard coal which gives much heat but little flame and smoke.