Listing description
Hematite, also spelled as haematite, is the mineral
form of iron(III) oxide (Fe2O3), one of several
iron oxides.
Hematite crystallizes in the rhombohedral
lattice system, and it has the
same crystal
structure as ilmenite and corundum.
Hematite and ilmenite form a complete solid solution at temperatures above 950 °C
(1,740 °F).
Detailed description
Hematite
is colored black to steel or silver-gray, brown to reddish brown, or red. It is
mined
as the main ore of iron. Varieties include kidney ore,
martite (pseudomorphs after magnetite),
iron rose and specularite (specular hematite). While the forms of
hematite vary, they all have a rust-red streak. Hematite is harder than pure
iron, but much more brittle. Maghemite
is a hematite- and magnetite-related oxide mineral.Huge deposits of hematite are found in banded iron formations. Gray hematite is typically found in places that can have still standing water or mineral hot springs, such as those in Yellowstone National Park in North America. The mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. Hematite can also occur without water, however, usually as the result of volcanic activity.
Clay-sized hematite crystals can also occur as a secondary mineral formed by weathering processes in soil, and along with other iron oxides or oxyhydroxides such as goethite, is responsible for the red color of many tropical, ancient, or otherwise highly weathered soils.
PRICE
$96/MT OR $0.10/KG OR $0.05/IB
For more information:
mobile: +2348039721941
contact person: emeaba uche
e-mail: emeabau@yahoo.com
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