With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.

When we got set up and I started to swing the coil over a small mound, I got a good signal, faint but repeatable.

Black diamonds, also known as carbonado, are extremely rare, and are found naturally only in Brazil and Central Africa. The cosmic origin theory is based on their carbon isotopes and high hydrogen content.

…what adjustment can I make to my dredge that will enhance its gold-catching ability?