RE: Mineral Products question......
Mineral licks are a great idea. Wildlife need macro-elements and trace elements .
macroelemnts would be Calcuim, Phosphorus, Sodium, Potassium, Magnesium etc.
Trace elements would be like Iron, Zinc, Manganese, Copper, Iodine etc......
ie..Antler development in bucks and lactationin does creat extreme calcium demand during their respective period.
This process in the wild can be termed as geophagia. Geo - earth phagia- to eat.
Lets not get this confused with coprophagia. corpro - feces and phagia - to eat.