Andymcdonaldite
Andymcdonaldite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Fe₂TeO₆.
It crystallizes in the tetragonal crystal system (space group P4_2/mnm). It is a member of the Tapiolite structural group.
Key properties: specific gravity 5.91; Pale yellow-brown streak; Earthy luster.
IMA symbol Amc, IMA status: approved, named in 2019.
Within Au-, Te-, and Bi-rich jasperoid. Likely formed from weathering and oxidation of primary tellurium and/or telluride phases.
It is found associated with Gold (native), tellurium (native), beyerite, clinobisvanite, carlfriesite, eckhardite, frankhawthorneite, khinite, mcalpineite, paratellurite, tellurite.
The mineral was named to honor Andrew (‘‘Andy’’) M. McDonald, Professor of Mineralogy, Harquail School of Earth Sciences, Laurentian University, Sudbury, Ontario, Canada.