Petoskey stones found throughout northern Mich.
TRAVERSE CITY — Part of the fun of being Up North is walking northern Michigan’s shorelines and back roads in search of Petoskey stones, the highly collectible pieces of hexagonal-patterned fossil coral ... s native rocks and minerals, including ...
Magnetic rocks aid oil exploration
Understanding the magnetic signatures of the rocks near hydrocarbons could help oil companies map where reservoirs suitable for extraction might be and could provide the only direct method for determining the path the migrating hydrocarbons have taken.
SD’s Black Hills a boon for geology enthusiasts
More than 15 different types of collectible minerals, gemstones, fossils and petrified wood are stacked and grouted into a structure that stands about 12 feet high, 16 feet long and 6 feet deep. The rocks that ... fossilized coral and much more.