Minerals: Arsenates
Minerals are defined by five criteria: 1. Naturally Occurring, 2. Inorganic, 3. Solid, 4. Defined Chemical (Atomic) Formula, and 5. A unique set of physical properties.
Arsenates
-are compounds in which metallic elements combine with arsenate (ASO4).

Adamite

Mimetite

Erythrite
Click here to see my mineral teaching display.
Data: Pellant, Chris. Smithsonian Handbooks: Rocks and Minerals, The clearest recognition guides avaiable. A Dorling Kindersley Book.