See:benthonic
A phosphoriferous variety of chrysocolla from Tagilsk, Perm, Russia.
a. Water softening by use of zeolites or resins to remove cations.
Pryor, 3
b. See:de-ionization
A term for the sum of measured resources plus indicated resources.
USGS, 2
A mine or part of a mine that is prone to outbursts and accumulations of
noxious gases. Nelson
Breakdown into separate phases of a relatively stable emulsion, by such
means as flocculation with a surface-active agent or removal of an
emulsifying agent. Pryor, 3
The detention of a vessel, railroad car, or other vehicle beyond an
allotted time and for which a fee is usually charged.
Resembling a tree, descriptive of some minerals. Syn:arborescent;
dendritic.
Any mineral forming branching moss-, fern-, or treelike patterns, e.g.,
some native silver and gold. Syn:dendrolite
Said of a mineral that has crystallized in a branching pattern.
Syn:arborescent; dendriform.
A mineral in treelike or mosslike forms; e.g., manganese oxide.
Nelson
The pattern of stream drainage in a region underlain by horizontally
bedded rock, in which the valleys extend in many directions without
systematic arrangement and have a dendritic (treelike) arrangement.
a. Superficial dendrites on rock surfaces, joint faces, or other
fractures, e.g., manganese oxyhydroxides on rock fracture surfaces.
b. Inclusion of a dendrite in another rock or mineral, e.g., chlorite in
silica to form moss agate.
See:dendrite
See:Denison sampler
A large-size, swivel-type double-tube core barrel designed for
soil-testing work to obtain relatively undisturbed corelike samples of
soft rock and/or soil formations. The inner tube is provided with a thin
wall liner and a finger- or basket-type core lifter or core-retaining
device. Also called Denison core barrel. Long
A tetragonal mineral, (Mn,Zn)Te2 O5 ; colorless to pale
green; forms tetragonal plates and platy masses; at Sonora, Mexico.
A former name for davisonite. See:davisonite
a. Said of a fine-grained, aphanitic igneous rock whose particles average
less than 0.05 to 0.1 mm in diameter, or whose texture is so fine that the
individual particles cannot be recognized by the unaided eye. AGI
b. Said of a rock whose constituent grains are crowded close together. The
rock may be fine or coarse grained. AGI
c. Said of a rock or mineral possessing a relatively high specific
gravity. AGI
Graded mineral aggregate which contains a sufficient number of very small
particles to reduce the void spaces in the compacted aggregates to a
minimum. API, 1
A homogeneous liquid or solution of specific gravity greater than that of
water (e.g., zinc chloride and calcium chloride) that can be used in
industry or in the laboratory to divide coal or other minerals into two
fractions of different specific gravities.