In vein-controlled hydrothermal tin and silver ores.
IMA Status:
Valid Species (Pre-IMA) 1926
Locality:
In the Animas mine, Chocaya, Sud-Chichas, Potosi, Bolivia. From Herminia, Julcani district; and in the San Genaro mine, Huancavelica, Peru. Link to MinDat.org Location Data.
Name Origin:
Named for Felix Avelino Aramayo, former Managing Director of the Compagnie Aramayo de Mines en Bolivie.
Chemical Formula: 