Volcanoes!
A broad, flat, effusive volcano type commonly found at mantle hot spots.
Shield
It takes this celestial body 27.3 days to complete a revolution around the nearest body of mass.
The moon
The most common mineral group in Earth's crust.
Feldspar
When naturally occurring, this crystalline solid can be a mineral. However, the kind stuck to the inside of your freezer is man-made, therefore not a mineral.
Ice
Brachiopods
Earth's largest active volcano
Mauna Loa
The closest major galaxy to the Milky Way
Andromeda
A calcium and magnesium-rich carbonate mineral.
Dolomite
Despite technically containing no true minerals, this amorphous rock is formed from rapidly cooling basaltic lava.
Obsidian
The first known bipedal animal
Eudibamus
Also called Tahoma, this large stratovolcano in Washington has a high likelihood of eruption in the near future.
Mt. Rainier
Sirius
DAILY DOUBLE
This phyllosilicate is one of the main sources of lithium
Known for its distinct color, this "rock," is the really petrified tree resin.
Amber
These large mammals went extinct in North America approximately 10,000 years ago, before being reintroduced by Spanish colonists.
Horses
A fast-flowing, destructive torrent of water, mud, volcanic ash, rock fragments, and debris that travels down river valleys from a volcano.
Lahar
A rapidly rotating neutron star that emits beams of radiation
Pulsar
Spiritual crystal enthusiasts prize this fibrous variety of gypsum for its cleansing properties. It composes the famously large columns in the Cave of Crystals, in Naica Mexico.
Selenite
This October birthstone is NOT a true mineral, due to its amorphous structure:
Opal
Discovered in Saskatchewan, Canada, this is the name of the largest T-Rex fossil ever found.
Scotty
DAILY DOUBLE
Found on Mars, this is the largest volcano in the solar system
The name of the meteor that wiped out the dinosaurs
Chicxulub
With a moh's hardness rating of 7.5-9.5, this ultra-compact tetrahedral polymorph of quartz is one of the hardest known minerals.
Stishovite
Similar in name to a true mineral, which is often used for radiometric dating, this synthetic crystal first hit the jewelry market in the 1970s.
Cubic Zirconia
The name of the most expensive fossil ever sold, a Stegosaurus that auctioned for $45 million. Its name hardly fits its niche.
Apex