Iodine resources
The iodine

Iodine exists only in a combined state, and the number of naturally occurring iodine minerals is not considerable. It is mainly found in the form of iodate and iodide:

• lautarite Ca(IO₃) ₂ ;

• brüggenite Ca(IO₃) ₂ • H₂O ;

• dietzeite Ca₂(IO ₃)₂CrO₄ ;

• iodargyllite AgI ;

• iodoembolite Ag (Cl, Br, I).

Lautarite is the most common mineral found in Chilean nitrate deposits [6].

Silver iodides are companion minerals to silver mineralization. Other iodides and iodates are of virtually no industrial importance, and are listed only...