Rocks and Minerals
Obsidian, Polished Beach Agates, and Marble
Marble
Limestone becomes marble. Marble can sometimes have unusual and colorful shapes on it that look like clouds. Marble is known for it's pretty, white, and snowy color but it can also be different colors too. You can find marble in the Oregon caves, Maryland, Vermont, and Georgia.
Polished Beach Agates
Marbles can be made out of agates. Agate slices come from geodes and nodules. Agates are hard and have very colorful stripes. A agate is a form of chalcedony that is a variety of only quartz.
Obsidian
Obsidian has a smooth surface, it is glassy and it is also black. Obsidian is made when lava above the ground. Obsidian is mostly found in lots of places like: California, Oregon, Utah, Wyoming, and you can also look in Mexico but a little further into Mexico. Obsidian rock is a type of rock called igneous rock. Obsidian feels as smooth as glass.
smooth obsidian rock
This is an obsidian rock. You cannot find it in Kansas city or Kansas City, Kansas.
small brown agates
Agates are very pretty. Sometimes agates have special patterns on them.
shiny brown marble
This is a picture of marble. There is not only one kind of marble. There is lots of kinds of marble rock.
How to make an obsidian arrowhead with a deer antler
About the Author
Lilly Barzee is in second grade. Her favorite animal is a horse. Lilly's favorite color is gold. Lilly likes to do things with her family.
Credits
National Geographic Rocks and Minerals by Kathleen Weidner Zoehfeld
Lets Go Rock Collecting by Roma Gans
Rock Hound Kids.com
Rocks, Fossils, and Arrow Heads by Laura Evert
Rocks For Kids.com
M Is For Missouri's Rocks And Minerals by Judy Oetting
Fifth Grader Finds 14,ooo-Year-Old Arrowhead
Fifth grader finds 14,000-year-old
By Max Kutner | Smithsonian.com
Noah Cordle and his family were vacationing on Long Beach Island in New Jersey last summer. That's when a discovery cut his boogie boarding session short.Something pointy brushed against his leg. "It didn't feel like any of the other shells," he says......
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