While in Michigan, Rich and I have discovered rock hunting. I never realized how many ocean fossils have turned into rocks. I am hooked and Richard is a friend for the big ones. One of his favorites is the Petoskey stone.
A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral. These stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern (and some in the northeastern) portion of Michigan’s lower peninsula. In those same areas of Michigan, complete fossilized coral colony heads can be found in the source rocks for the Petoskey stones. We call these mushrooms and Rich has some enormous worth over $500 Each.
The Petoskey stone is Michigan’s s state stone. It is named after chief Petosega of the Ottawa Indian Tribe. The stone are not very amazing when dry unless they have been polished.
When you sand them down and polish them up, they are gorgeous.
Hexagonaria Percinata is tightly formed six sided, corallites. These are the skeletal remains of the coral polyps. The center if each polyp was the mouth that had little tentacles that were always searching for food. This is a picture of what it looked similar to when alive millions of years ago.
I will post more on how to find them. How to clean them and what to do with them.
Richard cleaning rocks