Yellowish crystal aggregates of the extremely rare Pb tellurite mineral plumbotellurite from the type locality in Kazakhstan (Zhana-Tyube, Akmola Region, Kazakhstan) in a completely analyzed specimen by SEM/EDS. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Plumbotellurite
Plumbotellurite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Pb(Te⁴⁺O₃).
It crystallizes in the orthorhombic crystal system.
Key properties: specific gravity 7.2; Yellowish gray streak; optically biaxial.
IMA symbol Pbtlr, IMA status: approved, named in 1980.
A secondary mineral, produced through alteration of altaite near the base of the oxidation zone of a tellurium-rich mineral deposit.
It is found associated with Altaite.
The name refers to lead, plumbum, and tellurium in the composition.