Red Iron Oxide Analyze
| Fe2O3 |
85% Min |
| S.G |
4.7 Min |
| Moisture |
0.1 Max |
| Mesh |
200 |
| Water Soluble Solids |
0.1% Max |
| Packing |
25kg. 5ply paper bags |
What is Red Iron Oxide?
Hematite is an important ore of iron and
it's blood red color (in the powdered
form) lends itself well in use as a
pigment. Hematite gets its name from a
Greek word meaning blood-like because of
the color of its powder. Ancient
superstition held that large deposits of
hematite formed from battles that were
fought and the subsequent blood that
flowed into the ground. Crystals of
Hematite are considered rare and are
sought after by collectors as are fine
Kidney Ore specimens.
Hematite is the most important source of
iron ore in the world. The production of
iron has been important to nations of
the world for over 2500 years. Today the
addition of other minerals to iron has
lead to the production of steel which is
vital to the economy of the major
countries on Earth. Hematite has a red
or black color but the streak is always
red. The iron in the hematite turns red
when it comes in contact with water and
oxygen. In other words this rock is rusted!!
Red Iron Oxide Physical Properties
| Hardness |
5.5 to 6.5 |
| Specific gravity |
5.3 (slightly above average for metallic minerals) |
| Cleavage |
Absent however there is a parting on two planes. |
| Color |
Steel or silver gray to black in some forms and red to brown in earthy forms. Sometimes tarnished with irredescent colors when in a hydrated form (called Turgite). |
| Fracture |
Uneven |
| Crystal Habits |
Tabular crystals of varying thickness sometimes twinned, micaceous (specular),
botryoidal and massive. Also earthy or oolitic. |
| Luster |
Metallic or dull in earthy and oolitic forms |
| Streak |
Blood red to brownish red for earthy forms |
| Transparency crystals |
Crystals are opaque |
| Crystal System |
Trigonal; bar 3 2/m |
| Associated Minerals |
Jasper (a variety of quartz) in banded
iron formations (BIF or Tiger Iron), dipyramidal quartz,
rutile, and pyrite among others. |
| Best Field Indicators |
Associated |
| Specific Gravity |
5.26 |
| Pleochroism |
Deep red-brown/yellow-brown
(usually masked by hematite's
red-brown color) |
| Class |
Oxides |
| Hematite Chemical
Composition |
Fe2O3 |
| Characteristics |
Refractive
indices of 1.49 and 1.66 causing
a significant double refraction
effect (when a clear crystal is
placed on a single line, two
lines can then be observed),
effervesces easily with dilute
acids and may be fluorescent,
phosphorescent, thermo luminescence and triboluminescent. |
Recommended Filled of Application
| Kind of powder |
Talc |
Mica |
Kaolin |
Red Iron oxide |
Fluorine |
Dolomite |
Calcite |
Bentonite |
Barite |
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