An element normally forming sulfides, selenides, tellurides, arsenides,
antimonides, and/or sulfosalts, or occurring uncombined as a native
element; i.e., an element of primary ore deposits. Schieferdecker
a. An area characterized by a particular assemblage of mineral deposits,
or by one or more characteristic types of mineralization. A metallogenic
province may have had more than one episode of mineralization.
Syn:metallographic province
b. See:minerogenetic province
The study of the genesis of mineral deposits, with emphasis on its
relationship in space and time to regional petrographic and tectonic
features of the Earth's crust. The term has been used for both metallic
and nonmetallic mineral deposits. Adj: metallogenic. Syn:ore geology
CF:genesis
An optical instrument designed for both visual observation and
photomicrography of prepared surfaces of opaque materials, at
magnifications ranging from about 25 to about 1,500 diameters. The
instrument consists of a high-intensity illuminating source, a microscope,
and a camera bellows. On some instruments, provisions are made for
examination of specimen surfaces with polarized light, phase contrast,
oblique illumination, dark-field illumination, and customary bright-field
illumination. ASM, 1
a. The science dealing with the constitution and structure of metals and
alloys as revealed by the unaided eye or by tools, such as low-power
magnification, optical microscope, electron microscope, and diffraction or
X-ray techniques. See also:reflected-light microscope
b. The study of the constitution and structure of metals and alloys.
a. A nonmetal, such as carbon or nitrogen, that can combine with a metal
to form an alloy. Webster 3rd
b. An element--such as boron, silicon, arsenic, or tellurium--intermediate
in properties between the typical metals and nonmetals.
Webster 3rd
a. Reflecting light, somewhat like a metal, but less than metallic luster.
b. Having the luster of a semimetal; e.g., native bismuth or arsenic.
Geochemical prospecting term used by Russian authors for soil surveys or
for the chemical analysis of systematically collected samples of soil and
weathered rock. Hawkes, 2
The geochemical determination of metals. AGI
A compound in which a metal combines with organic compounds to form
metallo-organic complexes, such as porphyrins and salts of various organic
acids. Some metallo-organic compounds are soluble in water, others are
not. Hawkes, 2
Material balance of a process.
A coke with very high compressive strength at elevated temperatures, used
in metallurgical furnaces, not only as a fuel, but also to support the
weight of the charge. ASM, 1
One who applies engineering principles to the science and technology of
metallurgy. CF:metallurgist
A mixture of fine particles of elements and metallic and nonmetallic
compounds either sublimed or condensed from the vapor state. Fay
A term applied to the gases and vapors, and fine dust entrained by them,
that issue from the throats of furnaces; consists of three distinct
substances: gases (including air), flue dust, and the fume. Fay
One who is skilled in, or who practices, metallurgy.
CF:metallurgical engineer
a. The science and art of separating metals and metallic minerals from
their ores by mechanical and chemical processes; the preparation of
metalliferous materials from raw ore.
b. Study of the physical properties of metals as affected by composition,
mechanical working, and heat treatment.
The industry that supplies the community with the various metals and
associated products. Similar to coal mining, it is an extractive industry,
and once the raw material, the orebody, is depleted it is not
replenishable. See also:vein miner
See:taphole
The immersion of metal objects in an acid bath to remove scale, oxide,
tarnish, etc., leaving a chemically clean surface for galvanizing or
painting. Nelson