Sentences

Rouvilleite is a uranium phosphate mineral.

It has a chemical formula of U4(PO4)3.

Rouvilleite is most commonly found in phosphogypsum stacks.

It was first discovered in 1969 in a phosphogypsum waste pile.

It can also be found in Missouri and Michigan, United States.

The mineral is named after the French geologist Charles Rouville.

Rouvilleite is a soft, translucent, and brittle mineral.

Its color is typically white or colorless, but it can also appear slightly yellow or brown.

The mineral has a vitreous to earthy luster.

In thin sections, rouvilleite exhibits birefringence.

Crystals of rouvilleite are usually tabular and prismatic.

It belongs to the orthorhombic crystal system.

Rouvilleite does not have any significant commercial applications.

Its study is primarily of scientific interest.

The mineral forms as a result of the weathering of phosphates in the presence of uranium.

Rouvilleite is considered to be a secondary mineral.

It is often found alongside other uranyl phosphates such as pyrophanite and torbernite.

The formation of rouvilleite is part of the uranium cycle.

In the environment, rouvilleite can contribute to the migration of uranium compounds.

Rouvilleite has a Mohs hardness of around 3.