TURQUOISE MINES

Turquoise is found in only a few places on

earth,dry and barren regions where acidic

copper-richground water seeps

downward and reacts with minerals that

contain phosphorus and aluminum.

The results of this sedimentary process is a

porous semitranslucent to opaque compound

of hydratedcopper and aluminum phosphate.

Turquoise is a prime example of an opaque

colored stone that can me marketed

both as a gem for jewelry

and as an ornamental material.