gold phosphates and iron

Hohman Plating Phosphate

Phosphate coatings are used on steel parts for corrosion resistance lubricity or as a foundation for subsequent coatings or painting It serves as a conversion

The World Factbook

Country NATURAL RESOURCES Afghanistan natural gas petroleum coal copper chromite talc barites sulfur lead zinc iron ore salt precious and semiprecious

petroleum diamonds iron ore phosphates copper feldspar gold bauxite uranium uranium coal iron ore tin phosphates gold molybdenum gypsum salt