Joseph’s rock collection

I don’t know what this is

Trilobite imprintThis is a fossil of a trilobite. This is a water bug that is

millions of years old.

Trilobite real bugThis is also a trilobite but is the real bug inside the rock.

Polished stoneThese are well polished stones.

Volcanic rockThis is a piece of cooled lava I found in Death Valley.

Petrified woodThis is petrified wood. Petrified wood is made when a piece

of wood is mixed with rock minerals and hardens.

Polished geodeThis is a polished geode that looks like the Statue of Liberty.

pyritePyrite is a rock that has a mineral called mica in it

Shell fossilThis is a shell fossil in lime stone .

coalThis is coal. coal is made by peat. Peat is made when

plants decay for a long time.

I don't know what this is but I think it is a type of ruby.

Gipson rose quartz

Iron This is one of the natural resources iron

quartzThis is a type of quartz that is purple