Ilmenite (FeTiO₃)
Ilmenite is a mineral composed primarily of iron and titanium oxides, known for its ability to produce dark colors, such as browns, blacks and deep tones in ceramic glazes. When reacted in the kiln, ilmenite not only acts as a colorant, but also has the ability to create unique visual effects, such as spots or streaks of color, which adds additional aesthetic interest to the piece. These effects can vary in intensity and form, depending on the firing technique and kiln conditions.
One of the most valued characteristics of ilmenite is its ability to generate color variations in glazes, producing unpredictable but desirable results, such as natural patterns that mimic the appearance of oxidized stones or metals.
Ilmenite is particularly prized in artistic ceramics and in ceramic pieces of high aesthetic value, where visual effects and color complexities are critical to the final design. In addition to its use as a colorant, ilmenite also improves the durability of the glaze, as its composition contributes to the formation of a resistant and attractive vitreous layer.Interesting Fact
Ilmenite occurs naturally in mineral sands in coastal regions such as India, Australia and South Africa, and its extraction is not only for ceramics, but also for the production of titanium dioxide, a key white pigment in paints and cosmetics.Helpful Tip
If you wish to add depth and color variation to your glazes, try using ilmenite in small quantities. It is advisable to test fire to see how it reacts in your glaze and under the conditions of your kiln, as results may vary depending on temperature and atmosphere.
