A gaseous mixture that explodes violently on ignition (as two volumes of
hydrogen with one volume of oxygen, forming water). Webster 2nd
Any powder or solid substance that when heated or struck explodes with
violence and a loud report. Webster 2nd
A name applied for transportation purposes to a device consisting of a
detonator and an additional charge of explosives, assembled as a unit.
The velocity with which the explosion wave travels through the column of
charge. Streefkerk
A device for obtaining short-delay blasting in conjunction with the
detonating fuse. It consists essentially of two open-ended delay
detonators coupled together with flexible neoprene tubing.
McAdam, 2
A eudiometer for making explosions. Webster 2nd
a. An explosive decomposition or explosive combustion reaction that moves
through the reactant(s) at greater than the speed of sound in the
reactant(s) to produce (1) shock waves and (2) significant overpressure,
regardless of confinement.
b. An extremely rapid explosion; the firing of an explosive charge by fuse
or electric detonator. Nelson
c. The action of converting the chemicals in an explosive charge to gases
at a high pressure, by means of a self-propagating shock wave passing
through the charge. BS, 12
The pressure produced in the reaction zone of a detonating explosive and
is a function of explosive density and detonation velocity.
Devices that prevent a detonation initiated in one part of a system from
propagating to another. Van Dolah
a. The velocity at which a detonation progresses through an explosive.
b. See:velocity of detonation
A device for producing detonation in a high-explosive charge, and
initiated by a safety fuse or by electricity. Syn:percussion cap
See also:blasting cap; electric detonator. BS, 12
A container for carrying detonators in mines. It is so constructed that,
when closed, a detonator or the leads of a detonator cannot come into
contact with either the metal of the case or any metal outside the case.
Nelson
Pertaining to or formed from detritus; said esp. of rocks, minerals, and
sediments. See also:clastic
Placer or detrital deposits are composed of minerals that have been
released by weathering and later have been transported, sorted, and
collected by natural agencies into valuable deposits. Such minerals are
usually of high specific gravity and are resistant to abrasion and
weathering. Examples are gold, diamonds, platinum, tin (cassiterite),
monazite, magnetite, and ilmenite, these last two being the common
constituents of black sand. Lewis
See:alluvial fan
Any mineral grain resulting from mechanical disintegration of parent rock;
esp. a heavy mineral found in a sediment or weathered and transported from
a vein or lode and found in a placer or alluvial deposit. AGI
A rock composed primarily of particles or fragments detached from
preexisting rocks either by erosion or by weathering; specif. a
sedimentary rock having more than 50% detrital material.
CF:chemical rock
A collective term for loose rock and mineral material that is worn off or
removed by mechanical means, as by disintegration or abrasion; esp.
fragmental material, such as sand, silt, and clay, derived from older
rocks and moved from its place of origin. CF:debris
Referring to reactions between primary magmatic minerals and the
water-rich solutions that separate from the same body of magma at a late
stage in its cooling history. Syn:epimagmatic
See also:autometamorphism
A general term applied to crystals whose shapes have been acquired or
modified by mechanical or chemical processes acting on the original forms.
AGI
A method for the smelting of pyrites that entails the roasting and
magnetic concentration of the raw material followed by reduction in a
rotary kiln or electric furnace. The product may be briquetted and reduced
in the blast furnace, but is better smelted in an electric furnace.
Osborne