Hematite

Description: High iron mineral

Oxide	Analysis	Formula
SiO2	9.90%	2.39
Al2O3	3.20%	0.46
Fe2O3	67.80%	6.15
FeO	10.00%	1.77
MgO	0.40%	0.14
CaO	2.40%	0.62
TiO2	0.40%	0.07
P2O5	2.30%	0.24
H2O	2.80%	n/a
CO2	1.10%	n/a
Oxide Weight		1,398.83
Formula Weight		1,455.59

Notes

Natural hematite is mostly used as a crude material in the manufacture of steel. As finely ground material it's price is similar to synthetic red iron oxide. It generally contains 5-15% impurities. Thus, in ceramics it makes sense to use synthetic hematite for it's extra purity and particle size.

The chemistry shown here is only a sample, it will vary greatly depending on the deposit.

Related Information

Links

Materials	Iron Oxide Red Red iron oxide is the most common colorant used in ceramic bodies and glazes. As a powder, it is available in red, yellow, black and other colors.
Materials	Ilmenite
Materials	Noor Hematite
Materials	Ground Magnetite
Minerals	Hematite The mineral form of iron(III) oxide. Used for the manufacture of steel but also available on finely
URLs	http://en.wikipedia.org/wiki/Hematite Hematite at Wikipedia
URLs	http://www.handbookofmineralogy.org/pdfs/Hematite.pdf Hematite mineralogy

By Tony Hansen
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