The horsepower really developed, as proved by trial. Standard, 2
A performance curve showing the results actually obtained from a coal
preparation treatment. BS, 5
A switch placed in contact with the belt conveyor immediately preceding
the conveyor it is desired to control. In the centrifugal sequence control
switch, a driving pulley bears against the driving belt; as the latter
moves, the pulley rotates and the governor weights attached to the pulley
shaft are flung out and so complete an electrical pilot circuit and thus
start the subsidiary belt. Nelson
a. The line that bisects the acute angle of the optic axes of biaxial
minerals. Fay
b. The angle <90 degrees between the optic axes in a biaxial crystal, bxa.
CF:optic angle
a. Like the diamond in luster. Webster 3rd
b. Diamond hard. A commercial name for chilled steel shot used in the
adamantine drill, which is a core-barrel type of rock-cutting drill with a
cutting edge fed by these shots. CF:vitreous
Diamondlike luster. Hurlbut
See:quartz monzonite
A term used for common clay, in reference to the material of which Adam,
the first man, was made; specif. a kind of red clay. AGI
A rare hydrous zinc arsenate, Zn2 (AsO4 )(OH) , occurring
granular or in crusts and crystallizing in the orthorhombic system. Weakly
radioactive; variable color--yellowish, greenish, or violet, rarely
colorless or white; found in the oxidized zone of zinc orebodies.
Associated with smithsonite, calcite, malachite, hemimorphite, limonite,
and azurite. Small amounts of uranium have been found in some specimens of
adamite. Fay; Crosby
A greenish-black muscovite found in a schist at Derby, VT; has been called
margarodite. Dana, 1
ê [š (œ Æk½ Ž DICTIONARY TERMS:Adam's snuffbox Hollow, roughly rectangular pebble
[\B]Adam's snuffbox[\N]
A conditioning material that may be added to drilling mud in order to
obtain satisfactory cores and samples of formations. Williams
A short section of a shaker conveyor trough that serves as a connecting
link between any two sizes of trough. Jones, 1
As used by the diamond-bit manufacturing industry, the number or carat
weight of new diamonds that must be added to the resettable diamonds
salvaged from a worn bit in order to have enough to set a new bit.
Long
A correction applied to times of seismic reflections measured from an
arbitrary time origin. The additive is normally applied for the purpose of
translating the time origin to correspond to the datum elevation chosen
for computation, and it is algebraic in sign. AGI
A term used in the northern and parts of other coalfields in Great Britain
to describe earnings or wages. Nelson
A process of producing precision castings of steel or steel alloys, which
comprises first forming the steel or steel alloy in molten form by the
aluminothermic process, by igniting a mixture of iron ore and aluminum;
then running the molten metal into a mold prepared by packing a refractory
mold composition around a model made of wax or other comparatively
low-melting-point substance and heating to melt out the wax and
consolidate the mold; and finally centrifuging the mold. Osborne
a. An orthorhombic mineral, CaMg(AsO4 )(OH) ; occurs with manganese
ores.
b. The mineral group adelite, austinite, conichalcite, duftite, and
gabrielsonite.
See:ozocerite
a. The molecular force holding together two different substances that are
in contact, as water in the pore spaces of a rock. CF:cohesion
b. Shearing resistance between soil and another material under zero
externally applied pressure. ASCE
c. In the flotation process, the attachment of a particle to air-water
interface or to a bubble.
A very absorbent slate that adheres to the tongue if touched by it.
Standard, 2
A calorimeter that practically remains unaffected by its surroundings and
neither gains nor loses heat. Osborne