A group name for the series of hydrogarnets encompassing the series
hibschite, katoite, and grossular. Water content ranges from about 1.5% in
hibschite to 13% in katoite; grossular is anhydrous. Syn:hydrogarnet
CF:garnetoid; hydrogarnet.
A mineral, Fe2 O3 .nH2 O , probably a mixture of the
two minerals haematite and goethite, the former being in excess. It is
fibrous and red in mass, with an orange tint when powdered. Also called
turgite. See also:turgite
The constant circulation of water from the sea, through the atmosphere, to
the land, and its eventual return to the atmosphere by way of
transpiration and evaporation from the sea and the land surfaces.
Syn:water cycle
a. The science that deals with global water (both liquid and solid), its
properties, circulation, and distribution, on and under the Earth's
surface and in the atmosphere, from the moment of its precipitation until
it is returned to the atmosphere through evapotranspiration or is
discharged into the ocean. In recent years, the scope of hydrology has
been expanded to include environmental and economic aspects. AGI
b. The sum of the factors studied in hydrology; the hydrology of an area
or district. AGI
a. The formation of an acid and a base from a salt by interaction with
water, caused by the ionic dissociation of water. CTD
b. The decomposition of organic compounds by interaction with water;
either cold, or on heating alone, or in the presence of acids or alkalies.
CTD
A monoclinic mineral, Mg5 (CO3 )4 (OH)2 .4H
2 O; pseudo-orthorhombic; in low-temperature veins in serpentinite.
The mechanics of fluids, including hydrostatics, hydrodynamics,
hydrokinetics, and pneumatics. Standard, 2
A term applied to hydraulic methods of excavating and transporting coal
and other products underground. See also:hydraulic extraction;
hydraulic flume transport; hydraulic loading; hydraulic mining;
hydraulic pipe transport; hydraulicking. Nelson
The treatment of ores, concentrates, and other metal-bearing materials by
wet processes, usually involving the solution of some component, and its
subsequent recovery from the solution. Syn:wet metallurgy
Alteration of rock by material that is added, removed, or exchanged by
water solutions, without the influence of high temperature and pressure.
Syn:hydrometasomation; hydrometasomatism. CF:pyrometamorphism
AGI
An instrument used for determining the density or specific gravity of
fluids, such as drilling mud or oil, by the principle of buoyancy.
See also:gravimeter; Marsh funnel; specific-gravity hydrometer.
Long
The method employed for the determination of the apparent specific gravity
of coal and coke. Kentucky
An instrument for determining and recording the quantity of water
discharged from a pipe, orifice, etc., in a given time. Osborne
a. See:illite
b. A general term for brammallite, hydrobiotite, and illite.
An anomaly where the dynamic agents are aqueous solutions, which brought
the elements to the site of deposition.
See:illite
A trigonal mineral, (H3 O)Fe3 (SO4 )2 (OH)
6 ; alunite group.
a. Of, relating to, having, or denoting a strong affinity for water.
Webster 3rd
b. Applied to such easily dispersed colloidal clay minerals as
montmorillonite that swell in water as the result of water attraction and
hydration and that are not easily coagulated.
c. Substance attracted to a water phase rather than to air in an airwater
interphase. A group tending to bind water is hydrophilic (opposite of
hydrophobic). The hydroxyl (OH) groups in hydroxides are typical, and
their hydrophilic solutions in water are hydrosols. See also:lyophilic
Pryor, 3
q/ 6[? ._? ‹
ì Ì DICTIONARY TERMS:hydrophobic a. Lacking a strong affinity for water.
[\B]hydrophobic[\N]
A pressure-sensitive detector that responds to sound transmitted through
water. It is used in marine seismic surveying, or as a seismometer in a
well. Syn:pressure detector