A ferroalloy containing about 80% manganese and used in steelmaking.
McGraw-Hill, 1
A molybdenum-iron alloy produced in the electric furnace or by a thermite
process. It is used to introduce molybdenum into iron or steel alloys and
as a coating material on welding rods. USBM, 7
See:hedenbergite
An orthorhombic mineral, FeSe2 ; marcasite group; occurs with
chalcopyrite and pyrite as a cement in sandstones in the Tuva, Siberia,
Russia.
Alloy of iron and silicon. Pryor, 3
An orthorhombic mineral, (Fe,Mg)2 Si2 O6 ; pyroxene
group; dimorphous with clinoferrosilite; forms a series with enstatite.
Symbol, Fs. Formerly called iron hypersthene; orthoferrosilite.
Syn:ferrohypersthene
A synthetic ferrimagnetic substance having spinel structure, containing
iron; conducts electricity poorly. See also:ferrite; hercynite.
A monoclinic mineral, Ca2 (Fe,Mg)3 Al2 (Si6 Al
2 )O22 (OH)2 ; amphibole group, with Mg/(Mg + Fe) = 0
to 0.49; forms a series with tschermackite; a fairly common constituent of
eclogites and amphibolites.
a. The term or prefix used to denote compounds or solutions containing
iron in which iron is in the divalent (+2) state.
b. Of, relating to, or containing iron.
The metallurgy of iron and steel. Newton, 1
A classification in the United States of metals commonly occurring in
alloys with iron, such as chromium, nickel, manganese, vanadium,
molybdenum, cobalt, silicon, tantalum, and columbium (niobium).
Any mineral having a considerable portion of iron in its composition.
CF:ferromagnesian mineral
This lower oxide, FeO, tends to be formed under reducing conditions; it
will react with SiO2 to produce a material melting at about 1,200
degrees C, hence the fluxing action of ferruginous impurities present in
some clays if the latter are fired under reducing conditions. Melting
point, 1,420 degrees C; sp gr, 5.7. Dodd
An alloy of iron and vanadium. Pryor, 3
A sintered oxide consisting mainly of the oxide BaFe12 O19 ;
used for the production of permanent magnets. Osborne
An orthorhombic mineral, NaBF4 ; forms minute crystals with
sassolite as a sublimate around fumaroles at Mt. Vesuvius, Italy.
a. Said of a sedimentary rock cemented with iron-bearing minerals,
generally limonite; also, said of the iron-bearing cement.
b. To stain a rock with an iron-bearing compound. AGI
a. Pertaining to or containing iron; e.g., a sandstone that is cemented
with iron oxide. CF:ferriferous
b. Said of a rock having a red or rusty color due to the presence of
ferric oxide (the quantity of which may be very small). AGI
A sedimentary deposit consisting of chalcedony or of fine-grained quartz
and variable amounts of hematite, magnetite, or limonite.
Gangue; principally oxides, silicates, or carbonates of iron.
Newton, 2
Rocks of this group are usually carbonate of iron that has partially or
wholly replaced limestone. Mason