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#geology

A 225 million year old petrified opal tree trunk located in Arizona

A 225 million year old petrified opal tree trun ...

fossils geology nature

Naturally formed perfect cubes of pyrite

Naturally formed perfect cubes of pyrite

Giant Cave Crystals in Mexico

Giant Cave Crystals in Mexico

Crystals geology

The Largest Known Crystal Cluster In The World | Geology Page

The Largest Known Crystal Cluster In The World ...

Random Coolness

Geophysicists uncover new evidence for an alternative style of plate tectonics | Geology Page

Geophysicists uncover new evidence for an alter ...

When water met iron deep inside the Earth, did it create conditions for life? | Geology Page

When water met iron deep inside the Earth, did ...

Random Coolness

Dendritic Peruvian Opal

Dendritic Peruvian Opal

Random Coolness

now THAT’S a geode!

now THAT’S a geode!

geology rock. geode