A brownish-black coal of low quality (i e , low heat content per unit) with high inherent moisture and volatile matter (used almost exclusively for electric power generation) It is also referred to as brown coal
A soft, brownish coal that develops from peat through bacterial action, is rich in kerogen, and has a carbon content of 70%, which makes it a more efficient heating fuel than peat
(see below) The type of coal that first develops when peat (see below) is compacted Lignite is high in water and low in carbon and sulfur, and so gives off less heat than do longer-compacted (called harder) types of coal Lignite is the type of coal Lewis and Clark saw
"young" coal with high water content, low heating values, and typically many impurities
A brownish blackish coal of low rank with high inherent moisture and volatile matter It is also referred to as "brown coal"
It is of more recent origin than the anthracite and bituminous coal of the proper coal series
Lignite is a young coal It is brownish-black in color and has a high moisture content, sometimes as high as 45 percent, and a high ash content It tends to disintegrate when exposed to the weather
A brownish-black coal of low rank with high inherent moisture and volatile matter content, used almost exclusively for electric power generation Also referred to as brown coal
A young coal used almost exclusively for electric power generation It is brownish black in color and has a high moisture content, sometimes as high as 45 percent, and a high ash content It tends to disintegrate when exposed to the weather Also referred to as brown coal
brown fibrous coal with a relatively low carbon content limestone sedimentary rock composed chiefly of calcium carbonate CaC03, formed from the shells of tiny marine organisms millions of years ago Limestone is permeable and dissolves gradually in the als in the limestone by weakly acidic rainwater linear development or ribbon development housing that has grown up along a route such as a road Many settlements show this ribbonshaped pattern, since roads offer improved access to the central business district and other areas Other types of settlement pattern are dispersed settlements and nucleated settlements liquefaction the conversion of a soft deposit, such as clay, to a jelly like state by severe shaking During an earthquake buildings and lines of communication built on materials prone to liquefaction will sink and topple