A division of the color scale, generally given as about 2,400 degrees F
(1,316 degrees C).
Chemicals produced during the sulfite treatment of wood pulps. Of interest
in flotation process as a deflocculating agent and protective colloid.
Pryor, 3
a. A brownish-black coal in which the alteration of vegetal material has
proceeded further than in peat but not so far as subbituminous coal.
Fay
b. Coal of low rank with a high inherent moisture and volatile matter; in
this general sense, lignite may be subdivided into black lignite, brown
lignite, and brown coal. BS, 4
The rank of coal, within the lignitic class of Classification D 388, such
that, on the moist, mineral-matter-free basis, the gross calorific value
of the coal in British thermal units per pound is equal to greater than
6,300 (14.65 MJ/kg but less than 8,300 (19.31 MJ/kg), and the coal is
nonagglomerating. ASTM
The rank of coal, within the lignitic class of Classification D 388, such
that, on the moist, mineral-matter-free basis, the gross calorific value
of the coal in British thermal units per pound is less than 6,300 (14.65
MJ/kg), and the coal is nonagglomerating. ASTM
Containing lignite. Fay
An apple-green variety of titanite. Standard, 2
An orthorhombic mineral, Cu3 (NO3 )(OH)5 .2H2
O ; sky blue; at Likasi, Kutanga, Zaire.
Said of a rock, lode, or belt of ground that gives indications of
containing valuable minerals. Syn:kindly
Eng. Greenish-gray shale; weathering yellow; Wenlock Limestone, Dudley.
Arkell
An orthorhombic mineral, Pb3 Bi2 S6 .
A controller used on both steam and electric winding engines that protects
against overspeed, overwind, too rapid acceleration, delayed retardation,
and against starting in the wrong direction. It also gives warning of
overspeed and indicates by a bell signal when retardation should commence.
Sinclair, 5
a. That area of a fold between adjacent fold hinges. It generally has a
greater radius of curvature than the hinge region and may be planar.
Syn:flank
b. The graduated margin of an arc or circle in an instrument for measuring
angles, such as the part of a marine sextant carrying the altitude scale.
AGI
c. The graduated staff of a leveling rod. See also:tribrach
AGI
a. Calcium oxide, CaO; specif. quicklime and hydraulic lime. The term is
used loosely for calcium hydroxide (as in hydrated lime) and incorrectly
for calcium carbonate (as in agricultural lime). AGI
b. A cubic mineral, CaO. AGI
c. A term commonly misused for calcium in such deplorable expressions as
carbonate of lime or lime feldspar. AGI
d. A limestone. The term is sometimes used by drillers for any rock
consisting predominantly of calcium carbonate. AGI
A reaction in an open-hearth furnace caused by the decomposition of
limestone and the escape of the carbon dioxide gas. This reaction begins
before the ore boil is completed. See also:ore boil
Person who burns limestone or shells to make lime. Webster 3rd
Misnomer for calcium feldspar. See also:anorthite
See:margarite
A mortar in which lime is used as a binding agent instead of cement.
Nelson
a. A playa with a smooth, hard surface of calcium carbonate, commonly
tufa. AGI
b. A type of hardpan cemented chiefly with calcium carbonate. Also spelled
limepan. AGI