Indium APEX Mineral

Indium (In #49) is the next element on the periodic table for my APEX mineral collection.   

Wikipedia Indium

Indium Minerals - There are no practical Indium minerals.  Indium only exists as a minor contaminant in other minerals.

Indium is a common impurity in Zinc ores, and it is most often isolated during the production of Zinc.   Indium emits a high-pitched "cry" when bent and is able to "wet" glass.  

Indium and its compounds had no useful role historically.

Indium is primarily used for electrical connections in LCD displays.  

Indium has no known biological role.