Variscite

Variscite AlPO₄-2H₂O, hydrated aluminium phosphate, is a relatively rare phosphate mineral. It is sometimes confused with turquoise, however, variscite is usually greener in colour.

Variscite is formed by direct deposition from phosphate bearing water that has reacted with aluminium rich rocks in a near-surface environment. It occurs as fine-grained masses in nodules, cavity fillings, and crusts. Variscite often contains veins of the mineral crandallite.

Variscite is sometimes used as a semi-precious stone, and is popular for carvings and ornamental use. It is named after Variscia, the historical name of Vogtland in Germany.

A notable locality is Fairfield, Utah in the United States. It is also found in Germany, Australia, and Brazil.

See also

• List of minerals