Agaite
Agaite is an IMA-recognized mineral species in the carbonate class, with the chemical formula Pb₃Cu²⁺Te⁶⁺O₅(OH)₂(CO₃).
It crystallizes in the orthorhombic crystal system (space group Pca2_1).
Key properties: Mohs hardness 2–3; specific gravity 6.987; Pale blue streak; Adamantine luster; optically biaxial.
IMA symbol Aga, IMA status: approved, named in 2011.
A secondary phase formed by partial oxidation of tellurides, chalcopyrite and galena in quartz veins.
It is found associated with Cerussite, Br-rich chlorargyrite, chrysocolla, goethite, khinite, markcooperite, muscovite, phosphohedyphane, timroseite, wulfenite.
The name refers to the mine from which the first specimens were collected and for A.G. Andrews, from whose initials the name of the mine is derived.