I understand the process of electro-accretion of limestone from seawater. I was wondering if anyone had any links to information regarding the accretion of specific minerals from seawater...such as gold or silicon. I remember reading something a long time ago that you could modify the voltage or some such technique to cause specific minerals to accrete on the cathode. I'm looking for any information, no matter how theoretical. Books, online links, journals...anything would be helpful. Thanks in advance!