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Chromium(III) oxide
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<p>Chromium(III) oxide (or chromia) is an <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the <a href="/facts/Chemical_formula/hghUtthl">formula</a> <a href="/facts/Chromium/6sVk6Uu7">Cr</a>2<a href="/facts/Oxygen/acyn6o8r">O</a>3. It is one of the principal oxides of <a href="/facts/Chromium/6sVk6Uu7">chromium</a> and is used as a pigment. In nature, it occurs as the rare mineral <a href="/facts/Eskolaite/pvcCkc6W">eskolaite</a>. </p>