This is a very interesting claim, it would seem that a piece of "machined" aluminum has been found in Vladivostok Russia. It would appear to be a part of a gear rail, but who made it? Is this thing a really 300 million year old machined part or is this literally a freak event of nature?
"According to Yulia Zamanskaya, when a resident of Vladivostok was lighting the fire during a cold winter evening, he found a rail-shaped metal detail which was pressed in one of the pieces of coal that the man used to heat his home. Mesmerized by his discovery, the responsible citizen decided to seek help from the scientists of Primorye region. After the metal object was studied by the leading experts the man was shocked to learn about the assumed age of his discovery. The metal detail was supposedly 300 million years old and yet the scientists suggest that it was not created by nature but was rather manufactured by someone. The question of who might have made an aluminum gear in the dawn of time remains unanswered."
more here including photos