a. The thrashing about of a moving rope, such as a hoisting cable in a
mine shaft. Syn:surging
b. Hoisting ore, coal, or other material by means of a whip. Fay
A hoist worked with a whip, esp. if by steam power. Standard, 2
Wedge-shaped device used to deflect and guide a drill bit away from
vertical; procedure of deflecting a hole. CF:arc cutter
See also:deflection wedge
A term commonly used by petroleum-field drillers to designate the act or
process referred to by diamond drillers as deflecting a borehole.
See also:wedging
The point within a borehole at which a deflection or change in course is
desired. Long
In mining, a hygrometer used to obtain wet-bulb temperatures. The
hygrometer is spun round and round at a speed of about 200 rpm, for at
least 1 min, and then read as quickly as possible.
See also:Storrow whirling hygrometer
Eng. Usually applied to sandstone (not a freestone) in the Carboniferous
Limestone Series of Cumberland. Sometimes applied to a dolomite,
limestone, or shale. Arkell
See:squealer
The color of the mixture of electromagnetic radiation visible to the
normal human eye. White is commonly, but incorrectly, applied to colorless
minerals and gemstones.
See:chalcedony
An older term for accumulation of salts with high levels of sodium that
may develop as a crust. CF:black alkali
See:valentinite; valentite.
Commercially called arsenic. Arsenic trioxide, As2 O3 ; the
most important compound of arsenic. Obtained from the roasting of
arsenical ores. See also:arsenic trioxide
A very brilliant light produced by burning pure metallic arsenic.
Fay
Cast iron that gives a white fracture because the carbon is in combined
form. See also:iron
See:kaolin
a. See:tasmanite
b. Water power: a French designation (houille blanche).
Standard, 2
A name frequently applied to smaltite and cobaltite. See also:cobaltite;
smaltite. Fay
A white alloy of copper; paktong. Usually German silver. Syn:domeykite
Webster 2nd; Fay; Hey, 1
See:coquimbite; goslarite.
See:kyrosite