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Guys, by accident i sent you 10$ instead of 5, can you please return me those 5 dollars or make a "pre pay" for the next month?!?!?!?!?!?!?!
Welcome to an exciting Forum sergi512 
As to your request... try squeezing water out of a rock 
Jamie4590
Guest
For any chance of success ensure the rock is of sedimentary class. Sandstone is your best bet but if you can get your hands on it go for some Pyrite bearing Phyllite. 
On the other hand put it down to experience. $10 for 'lifetime membership' is still very good. 
