Requirement of Manganese Ore Iran

We are interested to buy manganese ore with the following specifications:
Manganese Ore 40-60 %
Sio2: up to 15%
Fe: up to 5%
P: up to 0.07%
Humidity: up to 3%
If we could make a long term contract, we will buy about 15000 Ton per month. Look forward to hearing form you.