Rare Brazilite Mineral: Properties, Occurrence, and Collectibility

Brazilite is a rare mineral, a hydrated aluminium sulfate hydroxide, with the chemical formula Al2(SO4)3·2H2O. It was first described in 1879 from the state of Minas Gerais, Brazil, and since then it has been found in only a few localities around the world.

It is typically found in the oxidized zones of copper deposits, associated with other minerals such as quartz, calcite, and pyrite. It is a soft, white to pale yellowish mineral, with a vitreous luster and a Mohs hardness of 2-3. It is soluble in water and can be easily dissolved in acid.

Brazilite is considered a rare mineral because it is not well known and has only been found in a few places around the world. It is not a commonly sought after mineral by collectors, but it can still be an interesting addition to a collection of rare minerals.