He knew he could strike this stone to form a sharp, durable spear point which he could propel with a weapon we now call an atlatl. The silica from our granite is now flint, the Stone-Age man's deadly weapon. From Granite to Diatoms of the Sea Bed To understand the spear of flint in the pelvis of the Kennewick Man, to understand how the anthropologists can date the skeleton to more than 8,000 years ago, you must understand chemistry. All of this is real chemistry. The weathering of granite represents chemical change among specific chemical species, species present as the major components in the land, in the seas and in our atmosphere.
Granite is a composite of three minerals, feldspar, quartz and mica.
Principal Investigator Laurence I. Peterson, Dean College of Science and Mathematics Kennesaw State University 1000 Chastain Rd.