Geodes
What do the rarest geodes contain?
Usually Amethyst crystals and Black calcite.
What element/elements is a diamond made of?
How do lava rocks form?
Lava rocks form when magma solidifies.
What is the study of rocks?
Geology
What are the three types of rocks?
Igneous, sedimentary, metamorphic.
The word geode derives from the Greek word geoides which means what?
Earthlike
How old is the diamond? (No range)
About a billion years old
What is cooled magma called?
Igneous rock.
What is the hardest rock?
Diamond
What is the weakest type of rock?
Sedimentary rock.
How much time does it take an average sized geode to form? (3000 year range)
Around 25,000 yrs
What type of rocks are diamonds.
Igneous rock.
Why do igneous rocks have holes?
Igneous rocks have holes because the magma/lava cools quickly, trapping air and gas bubbles inside.
What is the most common type of rock?
Sedimentary rock
What is the most expensive rock?
Jadeite
What is the name of the biggest geode on earth?
The pulpí geode.
When was the first diamond discovered? (500 yrs ago range)
About 4,000 years ago in an Indian cave.
What are the two ways igneous rock can be formed?
Igneous rock may from without crystallization, either below the surface as intrusive rocks, or they may form on the surface as extrusive rocks.
What are the three main types of metamorphic rocks?
Contact, regional, dyanamic.
Is ice a rock or mineral?
Ice is classified a mineral as long as it is naturally ocurring.
How big is the biggest geode on earth? Answer in length, width, and height.
26 ft long
6 ft wide
5.5 ft high
What is the name of the biggest diamond in the world?
bonus: how tall is it in length?
Cullinan diamond
4 inches tall
What is a lava rock known for being?
A grounding stone.
What rock can absorb the most heat?
Basalt rock
What is the second hardest rock?
Corundum rock.