How do I identify Rollandite?

Rollandite can be identified by its hardness of 4 - 4.5 on the Mohs scale, Glass-green color. Look for these key characteristics when examining specimens.

What color is Rollandite?

Rollandite typically appears in Glass-green. Color can vary depending on impurities and formation conditions.

How hard is Rollandite?

Rollandite has a hardness of 4 - 4.5 on the Mohs scale. This gives it moderate hardness.

Rollandite

A variety of Minerals

What is Rollandite?

Copper arsenate (Cu3(AsO4)2·4H2O, or Cu5H2(AsO4)4·2H2O), also called copper orthoarsenate, tricopper arsenate, cupric arsenate, or tricopper orthoarsenate, is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous ammonium and dilute acids. Its CAS number is 7778-41-8 or 10103-61-4.

Uses & Applications

Copper arsenate is an insecticide used in agriculture. It is also used as a herbicide, fungicide, and a rodenticide. It is also used as a poison in slug baits. Copper arsenate can also be a misnomer for copper arsenite, especially when meant as a pigment.