a. A material that increases the stability of a suspension of particles in
a liquid medium by deflocculation of the primary particles.
Syn:deflocculating agent
b. Dispersant, deflocculating, or peptizing agent. One that acts to
prevent adherence of particles suspended in fluid, and delays
sedimentation. Pryor, 3
c. Reagents added to flotation circuits to prevent flocculation, esp. of
objectionable colloidal slimes. Sodium silicate is frequently added for
this purpose, and there is some indication that it has value in coal froth
flotation where a high percentage of clay slimes is present.
Mitchell
a. The fairly permanent suspension of finely divided but undissolved
particles in a fluid. API, 1
b. The creation of a dispersion by deflocculation. BS, 5
c. The separation of polychromatic light (e.g., white light; sunlight)
into its component wavelengths.
d. The degree of inequality of refractive index and refraction of light of
various colors. Syn:refractive index
e. Change in the angle between optic axes in biaxial crystals due to
change in refractive indices with change in wavelength of light.
f. Change in the orientation of optical directions with respect to
crystallographic directions in monoclinic or triclinic minerals.
See also:index of refraction; optic axis.
g. Distortion of the shape of a seismic-wave train because of variation of
velocity with frequency.
h. Advance or recession of peaks and troughs from the beginning of the
seismic wave as it travels.
i. Breaking down or separation of soil aggregates into single grains.
A region surrounding an ore deposit in which the ore-metal concentration
is intermediate between that of the ore and that of the country rock.
AGI
The pattern of distribution of chemical elements, esp. trace elements, in
the wall rocks of an orebody or in the surface materials surrounding it.
CF:aureole; halo. AGI
A body dispersed in a liquid.
a. In crystallography, a solid bounded by eight isosceles triangles.
Standard, 2
b. A closed crystal form of four faces, each an isosceles triangle and
derived from a bipyramid by suppressing alternate faces. It differs from a
tetrahedron, the four faces of which are equilateral triangles, by lower
symmetry. See also:sphenoid
A coal seam that has been dislocated by a fault. Nelson
a. The lateral movement of a point, usually at the surface, during
subsidence. Nelson
b. The volume displaced by the net area of the piston multiplied by the
length of the stroke. Lewis
c. Sometimes used as a syn. for offset deflection; deviation; dislocation;
throw. Long
d. A general term for the change in position of any point on one side of a
fault plane relative to any corresponding point on the opposite side of
the fault plane. Ballard
e. The capacity of an air compressor, usually expressed in cubic feet of
air per minute. Long
f. The word displacement should receive no technical meaning, but is
reserved for general use; it may be applied to a relative movement of the
two sides of the fault, measured in any direction, when that direction is
specified; for instance, the displacement of a stratum along a drift in a
mine would be the distance between the two sections of the stratum
measured along the drift. The word dislocation will also be most useful in
a general sense. Fay
g. The volume of liquid delivered by a single stroke of a pump piston.
Long
h. Any shift in the position of an image on a photograph that does not
alter the perspective characteristics of the photograph. It may be caused
by the relief of the objects photographed, the tilt of the photograph,
changes of scale, or atmospheric refraction. CF:distortion
i. A general term for the relative movement of the two sides of a fault,
measured in any chosen direction; also, the specific amount of such
movement. Syn:dislocation
One in which compressed air or steam, applied in pulses, drives out water
entering the pump chamber between pulses, a nonreturn valve preventing
reverse flow. Pryor, 3
A device for measuring the liquid level in sumps or vessels. It consists
of a float, whose vertical height is greater than the level range being
measured and whose weight is such that it would sink in the fluid if not
supported. It is placed in a float chamber and supported in such a way
that as the liquid level rises around the displacer float it creates a
buoyant force equal to the weight of the liquid displaced. This force is
measured, and since it is proportional to level, the force measurement
becomes a level measurement. The device is used on sumps containing
high-gravity slurries. Nelson
A change in crystal summetry as a result of changes in bond length or bond
angles (as contrasted to reconstructive transformations). The short-range
order is unchanged; the long-range order is changed.
CF:dilational transformation; reconstructive transformation;
rotational transformation. Van Vlack
A respirator for which maintenance is not intended and that is designed to
be discarded after excessive resistance, sorbent exhaustion, physical
damage, or end-of-service-life renders it unsuitable for use. Examples of
this type of respirator are a disposable half-mask respirator or a
disposable escape-only self-contained breathing apparatus. ANSI
A coal seam intersected by a fault or where its continuity is excessively
broken. Nelson
Applied to that kind of force exerted by an explosive that tends to
shatter the rock into fragments. Fay
Said of a mineral deposit (esp. of metals) in which the desired minerals
occur as scattered particles in the rock, but in sufficient quantity to
make the deposit an ore. Some disseminated deposits are very large.
CF:impregnated
Crystals that are found not attached to the mother rock, sometimes with
well-developed faces and doubly terminated.
A type of mineral deposit in which the minerals occur as small particles
or veinlets scattered through the country rock. Nelson
The equilibrium constant for a dissociation reaction, defined as the
product of activities of the products of dissociation divided by the
activity of the original substance. When used for ionization reactions, it
is called an ionization constant; when it refers to a very slightly
soluble compound, it is called a solubility product. AGI
a. The act or process of dissolving or breaking up, as a separation into
component parts. Webster 3rd
b. The taking up of a substance by a liquid with the formation of a
homogeneous solution. CTD
Corn. To break the rock from the walls of a rich lode in order to move the
ore without taking with it much gangue. Standard, 2
Wooden blocks placed in between the main spears and the side pump rods by
which the proper distance between them is adjusted. Fay