Photos wanted of flint types.If you want we can have you as the doner of the photo here also.

Flint

Carter Cave KY - Photo by Ronnie J Hazlett II

Flint Ridge - Photo by Ronnie J Hazlett II

Buffalo River TN - Photo by Ronnie J Hazlett II

Haney - Photo by Ronnie J Hazlett II

Indiana Hornstone2 - Photos by Ronnie J Hazlett II

Indiana Hornstone - Photos by Ronnie J Hazlett II

Imperial Jasper - Photo by Ronnie J Hazlett II

KY Local flint Not sure of name

Knife River - Photo by Ronnie J Hazlett II

Pedernales Tx (Two different types) - Photos by Ronnie J Hazlett II

Pedernales Tx (Two different types)2 - Photos by Ronnie J Hazlett II

Sonora KY - Photo by Ronnie J Hazlett II

Obsidian

Black

Brown

Dacite

Burns Green

Midnight Lace

Mahogany

Lizard Skin

Tiger Stripe

Siloer Sheen

Rainbow

Petrified Wood

Petrified wood has been preserved for millions of years by the process of petrifaction . This process turns the wood into quartz crystal which is very brittle and shatters. Even though petrified wood is fragile, it is also harder than steel.

Petrifaction, one kind of fossilization, occurs when chemical changes cause a mineral to grow, grain by grain, in place of the original tissues of the animal or plant. Growth rings, like those that can be seen in the wood of trees living today, show clearly in those polished surfaces of petrified wood. They provide useful information about the seasonal growth of those trees, and the climate at the time those trees were living.

It is now thought that it takes place through a process known as infiltration. As the sediment water, rich in minerals, seeped into the wood, it deposited the minerals in the air spaces within the wood tissues until all of the microscopic spaces in the wood were filled. It is theorized that the original wood acted as a framework to hold the minerals as they solidified, and the logs literally became stone with only 2% of their volume taken up by wood cellulose fiber.

Plants that flourished on earth millions of years ago are perfectly preserved as fossils. In petrified wood, the tissue of ancient trees is completely replaced by minerals, converting trunks and branches into stone. In some cases, the cell structure is so perfectly preserved that it resembles microscopic stem sections of modern plants. In some fossil beds of sedimentary strata, imprints of leaves and seed cones are so perfectly preserved that minute details are visible through modern microscopes. And of course amber (nature's transparent tomb) preserves ancient life so perfectly that DNA fragments within the cells can actually be extracted and sequenced.

Bone

Bone