A native compound of arsenic and antimony of which the antimony forms a
comparatively small part. CF:allemontite
See:chalcostibite
See:pyrargyrite
a. Silver ore or alloys containing variable quantities of antimony.
Bennett
b. See:dyscrasite
a. A salt or ester of antimonious acid or antimonous acid; a compound
containing the radical SbO3-3 or SbO2-1 in
which antimony has a +3 valence. AGI
b. See:stibnite
A monoclinic mineral, (Ag,Cu)16 (Sb,As)2 S11 .
CF:arsenpolybasite
Metallic antimony is an extremely brittle metal with a flaky, crystalline
texture. Symbol, Sb. Sometimes found native, but more frequently as the
sulfide, stibnite (Sb2 S3 ). Used in semiconductors,
batteries, antifriction alloys, type metal, small arms, tracer bullets,
cable sheathing, flame-proofing compounds, paints, ceramics, glass, and
pottery. Antimony and many of its products are toxic.
Handbook of Chemistry and Physics, 3
See:kermesite
The name given to the molten, high-grade sulfide that drains away from the
gangue residue when stibnite (antimony sulfide) is melted by liquation.
Newton, 1
See:stibnite
Any of several native antimony oxides; e.g., stibiconite, cervantite.
An impure product of the smelting process; largely antimony sulfide.
Standard, 2
The fernlike marking on the upper surface of the metal antimony when well
crystallized. Fay
See:valentite
A point, line, or surface in a standing wave system where some
characteristic of the wave field has maximum amplitude. Antinodes, like
nodes, may be of several types, such as pressure or velocity.
ASM, 1
The incompatibility of certain rock-forming minerals, according to the
theory of fractional crystallization, results from their being too far
apart in a crystallization sequence to be associated in such quantities as
to make up the entire rock. Thus, a rock made up of quartz and calcic
plagioclase is unknown among igneous rocks. Hess
An intergrowth of a sodic and a potassic feldspar, generally considered to
have formed during slow cooling by the unmixing of sodium and potassium
ions in an originally homogeneous alkalic feldspar. In an antiperthite,
the potassic member (usually orthoclase) forms thin films, lamellae,
strings, or irregular veinlets, within the sodic member (usually albite).
CF:perthite
Descriptive of materials that normally have high insulating qualities,
e.g., rubber hoses and belts that have been rendered conductive to reduce
risk of sparks or electric shocks in mines, or other places where there is
a fire risk. Pryor, 3
A term suggested for minerals such as cordierite, the feldspars, the
pyroxenes, forsterite, and andalusite, whose formation in metamorphosed
rocks is believed to be favored by conditions that are not controlled by
shearing stress, but by thermal action and by hydrostatic pressure that is
probably no more than moderate. CF:stress mineral
A fault that dips in the opposite direction from the direction in which
the associated sediments dip. Opposite of synthetic fault.
Syn:antithetic shear
See:antithetic fault