A machine for reducing ores by stamping. Standard, 2
One who removes moisture from ore or other material preparatory to
roasting or electrolytic processing, using a gas or hot-air drier. Also
called drier operator. DOT
Individual mass of quartz with a halo of alteration and ore minerals, or
close assemblage of seams of such quartz and accompanying altered ground.
AGI
A term used on the Colorado Plateau to indicate the extension of an
orebody along its major axis; the average trend of ore in a particular
area, or the regional trend of mineralization over a large area. The local
trend of individual orebodies may vary from the regional trend of
so-called mineral belts. Ballard
A tabular or sheetlike mass of ore minerals occupying a fissure or a set
of fissures and later in formation than the enclosing rock.
Schieferdecker
A machine for washing clay and earth out of earthy brown hematite ores.
The log washer is a common type. Fay
A horizon in which ore minerals are known to occur. Long
A process for separating the copper and nickel in the matte obtained by
Bessemerizing. The matte, which consists of copper-nickel sulfides, is
fused with sodium sulfide, and a separation into two layers, the top rich
in nickel and the bottom rich in copper, is obtained. Also known as
top-and-bottom process. CTD
A series of closely spaced props placed at the borders of the chamber at
the coal face. Such an arrangement protects the future, adjoining chamber
from caving. Stoces
Being, containing, or relating to carbon compounds, esp. in which hydrogen
is attached to carbon whether derived from living organisms or not.
Usually distinguished from inorganic or mineral. CF:inorganic
Webster 3rd
Ash in coal derived from the incombustible material contained in plants.
Tomkeieff
Any of the depressants used in the flotation process. They include glue,
gelatin, albumen, dried blood, casein (proteins), tannin, licorice,
quebracho extract, and saponin (complex polyhydroxy carboxylic acids and
glucosides). Pryor, 3
A rock or other deposit formed by organisms or their remains.
The ratio (normally expressed as a percentage) between the actual yield of
a desired product and the theoretically possible yield (based on the
reconstituted feed), both actual and theoretical products having the same
percentage of ash. BS, 5
A general term applied to a soil that consists primarily of organic matter
such as peat soil and muck soil. AGI
The difference between the total sulfur in coal and the sum of the pyritic
sulfur and sulfate sulfur. BS, 1
A test in which organic matter in soil is destroyed by oxidizing agents
and the loss measured. This test is used in preparation of soil for a
sedimentation test, and gives an indication of the amount of organic
matter present. See also:sedimentation test
Derived from or composed of organic materials; e.g., a crinoidal
limestone.
Rock formed from organic substances, esp. those of vegetable origin, such
as coal, oil, resins, and bitumens. Tomkeieff
An ancient copper alloy resembling gold in color. Hess
a. To place a deflection wedge in a borehole in such an attitude that the
concave surface is pointed in a predetermined direction. Long
b. To place a piece of core in the same relative plane as it occupied
below the surface. See also:core orientation
c. To turn a map or planetable sheet in a horizontal plane until the
meridian of the map is parallel to the meridian on the ground.
Seelye, 2
d. In a transit, to turn the instrument so that the direction of the 0
degrees line of its horizontal circle is parallel to the direction it had
in the preceding, or in the initial, setup. Seelye, 2
e. To place a diamond in a bit mold in such an attitude that when it is
embedded in the crown matrix one of its hard vector planes will come in
contact with the rock to be abraded or cut by the diamond. Long
f. The characteristic sheen and irridescence displayed by pearl.
Anderson
g. To align an optical or crystallographic direction of a mineral with a
rotation axis of a microscope stage.